| Message | Posted on | Last post by |
|---|---|---|
| [+] cooking » Little charcoal stove (Go to) | Daniel Schmidt | |
|
That design is pretty nice. The burn chamber is a bit short, but otherwise it has the basics of air in low and exhaust out high. My guess about it putting the fire out is that it is all thermal mass. If you could put some ash on the plate to insulate the briquette from the cold mass it would certainly help. Also, if the entire stove was left in a warm place such as near a heat source or a sunny window then it would sap less heat from the fire early on.
They have those charcoal chimney starters which is basically a steel cylinder with a wire rack on the bottom. You put some paper in the bottom and briquettes on top and light it from below. It updrafts the heat to get the briquettes burning and then you can transfer it to the little stove. You can make your own out of an old can. Maybe replacing the ceramic plate in the bottom piece with a stainless steel rack would allow you to put paper underneath and briquettes on top to avoid having to transfer them from a can. You would probably need to leave the top section off until it is well lit. Unfortunately it could potentially cause enough thermal shock to crack it by having something quick burning like paper in it, so it may be unavoidable to have to use the transfer method. This page on charcoal chimneys has a bunch of tips. I usually save used cooking oils to soak some paper or kindling in to help get fires going and keep them going. I dip sticks in a jar of oil before adding them to the fire and it helps me use substantially less wood on small stoves. I personally wouldn't use that indoors. I really like the idea of having an outdoor kitchen with one or two ovens and a handful of stoves of different sizes for different tasks. Something this size would be great for making a small meal or a hot drink. You could probably use kindling in it the same way some small L-tube rocket stoves work. Perhaps get a couple briquettes started and warm up the stove slowly to avoid thermal shock and then push in small sticks to keep it going. I'm sure it will be a bit of trial and error. Good luck! |
||
| [+] rocket stoves » Rocket stove infrastructure used to generate a completely passive heat storage/recovery unit (Go to) | bob day | |
|
It shouldn't be too difficult to use a trombe wall with pipes or something similar to replace the active fans. You could probably even run the intake pipes across the bottom of the trombe wall with a slight uphill pitch to preheat the air, go through the mass, and then vertical through the trombe wall to create a draft. Something like an Arduino could power flaps or valves to cut off air flow and be very power efficient.
I don't think adding metal is going to be very effective or economical as the mass is already fairly conductive. There is only a small temperature difference using outside air comparatively to burning wood in a RMH, so squeezing 1 or 2 degrees extra out of a given amount of air will be difficult and probably expensive. Adding more than one pipe would greatly increase efficiency. The thing about a large thermal mass is the surface to volume ratio. If the mass is more circular or square it won't give off heat as fast as one that is really long and wide and thin at roughly the same volume. Adding surface area in the form of more pipes will give more contact for the air to dump heat in to the mass. One could be the regular RMH system for supplemental heat and another one or more for airflow only. For a greenhouse, you probably wouldn't want a low bench, but rather something closer to square in cross section and closer to a more normal working height to serve as a work/plant space or perhaps with 'steps' for different tiers to hold plants. This would give off heat a bit more slowly but also take longer to lose heat. Given the soil all of the plants use then a full greenhouse would have much more thermal mass than many typical modern homes. The temperature swings shouldn't be drastic, so the mass won't need to be shaped to give off that much heat. In an emergency, the bell of the RMH can provide fast heat, but most of the time the mass should be sufficient if designed right. Getting the vents to open and close at the right times will be key to this. I have been looking into this idea from the opposite perspective; I want a cool mass to moderate the hottest temperatures of my climate. Instead of preheating pipes with a trombe wall, I would use geothermal cooling. I want to take the night air and cool it further with subterranean pipes to then pull heat from a large mass. The idea of the mass and pipes is identical. Having a large monolith that isn't too thin in any direction and enough pipe surface area should be able to accomplish our goals. Van Powell on YouTube has a lot of interesting videos, including making a greenhouse with a rocket mass heater. It isn't terrible large and doesn't have the system you are looking to implement, but there are a few ideas there that could be useful. You can insulate the north side of the building to retain heat, or maybe use charcoal to darken the surface of the mass in spring/fall to absorb heat from the sun. Hopefully some of these ideas will help you out. |
||
| [+] hugelkultur » Hugelkultur under trees (Go to) | Nicole Alderman | |
|
I would think that it depends on a lot of things. The soil type would probably play a role. The percentage of the root zone being covered would matter. The types of trees would make a difference. Really big trees with little hugels in a straight line across one side probably wouldn't make a difference. Burying most of the root zone with a hugel ring around a tree probably wouldn't be a great idea. You can probably find videos on youtube of people using air spades on trees to relieve compaction and aerate soil.
If a tree has a road or other pavement covering a good portion of the root zone and a hugel is built on the remainder of the root zone then it could also be problematic. Certain trees that tend to do well as street trees would likely also deal with it better. You could look at similar trees in the area that have large portions of their root zone covered and look at their heath as sort of a gauge for what you can get away with. If the trees are cut back a significant amount then they would lose some root zone and eventually grow new roots where they need them. |
||
| [+] bugs » Are these grubs decomposers or root eaters? (Go to) | Joy Oasis | |
|
I find them in some of my sweet potatos and they have eaten the roots on a few of my small fig trees. I think the larger fig trees outpace the speed that they eat the roots. From what I understand they have a 2 year cycle, so you may have one year heavy with them and the next year lighter. Supposedly the beetles also mate in the trees and lay the eggs beneath said tree. They tend to come out all at once for a short period. I need to set my sweet potato bins on logs next year and cover them with netting or something when they come out to mate. I don't know of any other methods of control, but they don't seem to attack most of my other plants. Then again with delicious sweet potatos around they can afford to be picky I guess.
|
||
| [+] roundwood and timber framing » Stick framing. (Go to) | Daniel Schmidt | |
|
Has anyone here seen Swedish Platform Framing? I ran across that page a few years back and it seemed pretty interesting. I agree that using something locally appropriate is generally the way to go. Certainly not a lot of rocks here in Florida. I'm pretty sure most of the stone here has been trucked in from places north of here.
Using some of the advanced framing techniques or the Swedish Platform Framing methods can reduce the amount of wood used and allow for more insulation, thermal mass, or both. I like the idea of a 'sandboxed' thermal mass. Having a large mass here in Florida on the outside of your house soaking up sun all day keeps your house far too warm all night as opposed to an insulated wall. I guess the reverse would be true in a colder climate; Using a large exterior mass facing away from the sun would persistently stay cooler than a comfortable room temperature for a significant part of the year. Even though I don't have rocks, I do have plenty of sand. There are places further inland with a good amount of clay, but very little that I can find at the beach. Maybe I will get lucky and find some when I move, or maybe I will just have to buy some. Either way, I plan on putting thermal mass inside an insulated building to help it keep cool. Keeping it out of direct contact with the ground and adding some ducts to run cooler air through at night may be a method of keeping temperatures more comfortable. The opposite of this for colder climates would be a rocket mass heater. |
||
| [+] rocket stoves » split exhaust into four separate exhausts? (Go to) | Glenn Herbert | |
|
One thing you can look at for inspiration is automotive exhaust systems. Getting multiple pipes from multiple cylinders in the most efficient way possible is one of the best performance per dollar enhancements that can be done to an engine, so there is all kinds of performance information on this subject that can be utilized for a rocket stove/mass heater.
When I think about this, particularly the surface area, I think about how much heat the exhaust is losing. If you made on long mass with 1 x 6" pipe vs 4 x 3" pipes, the exhaust of the 3" pipes would be lower temperature than the exhaust of the 6" pipe for a given length. It has more surface area to dump heat into the mass. This would work great for a mass oven (something I am working on), but counterproductive for long distances. Also, making the exhaust too cold can cause smoke back issues. You could run the exhaust back by the bell, but that makes the possible length of exhaust run an even shorter distance from the fire box. The other thing is the amount of heat being produced (BTU's). A given firebox/duct combo size will only be able to put out so much heat at once. Splitting it up 2 ways or 10 ways with the same flow potential doesn't make it produce any more heat. A bigger system is needed. A larger batch with an appropriate single exhaust system should be able to carry more heat a further distance from the firebox than a multi tube exhaust system. A dual exhaust could be used with a central firebox and exhaust going in either direction with a unified mass going between two rooms which would help get more even heat across the mass (more even heat between rooms). If you need to warm up a number of separated rooms then it might be beneficial to take stock of what needs the most heat and how to get the heat there. If one room isn't inhabited and just needs warmth to avoid pipes freezing then maybe adding vents in the door/wall or perhaps even a thermostatically controlled fan could bring some heat from a room with a RMH to a room without one. Popping holes in the walls up high and blowing in loose fill insulation like cellulose fiber can help retain heat. Multiple mass heaters may be the only efficient way to heat spaces that are not adjacent to each other. |
||
| [+] permaculture » Growing citrus in a well (Go to) | Chris Holcombe | |
|
It is possible. The design sounds good, but the inside diameter of the 'container' seems a little small. I can't tell exactly from the picture, but it appears to be around 2 feet in diameter. If you keep the tree small then it could work, though at that small of a size it would be easy to keep in a movable container.
Ice doesn't seem to instantly kill any of the citrus trees around here. They get hard freezes inland pretty often in late winter, and even the beach gets an occasional hard freeze every couple of years. We do have the citrus greening disease killing off our trees, and a hard freeze will damage fruit, but the tree itself doesn't seem to have cold problems since the roots and main branches generally don't get that cold. When it warms back into the 60's and the sun beaming down can feel more like the 80's then the tree only experiences a few hours of a hard freeze and many times it isn't multiple days in a row. Getting your micro climate to create these conditions should increase the chances of success. Covering it during really bad or long freezes will be important. I have used a small rocket stove to heat bricks which I threw under a canvas tarp to protect some sensitive plants in the past. Given the citrus greening disaster going on here I have little interest in fighting a losing battle trying to grow citrus, but I have learned a couple things. Many citrus trees seem to have their fruit mature in late fall to early winter. Having an early frost could destroy those fruit before maturity. Something that bears more often or at a different time of year could bring better yields. Also something smaller that doesn't hang on the tree as long could be beneficial. Something like a Key Lime could be another option. They grow true to seed and the leaves also taste like a strong lime. Other citrus leaves I have encountered smell terrible enough that I would not try tasting them, but the Key Lime leaves can be used to cook with. I made some rice once that I added a few leaves to and it came out rather well. This was right before I found out about the citrus greening disease that ended up killing my limes. In any case, as long as you protect the fruit then you could get a good yield from the tree. The root system will probably be substantial if it isn't vigorously pruned. I could easily see a tree planted inside that well busting the bricks apart if left to grow on its own. If you get anywhere growing the tree then it would be great to see pics! |
||
| [+] tinkering with this site » Must we always be "goofballs" when sharing links to Permies on social media? (Go to) | Todd Parr | |
|
Would something like TinyURL work for people trying to post directly to a specific page? I don't use Facebook, so I have no idea how they do things. TinyURL also provides a preview version of the link so people can go to TinyURL and see what the original link was before proceeding to its destination. It appears you should be able to add 'preview.' to the beginning of a TinyURL link to get to the preview page, or they also have a cookie they can add that does it for you automatically by clicking the Preview Feature link in their side menu.
This doesn't address the 'goofballs' issue but rather circumvents it. I guess I never really looked at the new homepage to notice it. If the TinyURL works on Facebook then I imagine other people could have a similar experience where they immediately go to the substance of this site and be initially oblivious to the goofballs reference. It does seem to connote something other than what this site is geared towards, but doesn't bother me either. I think the Facebook issue is just that, a Facebook issue. The way they manipulate links and the relationship of goofballs and permaculture are separate issues as I see it. |
||
| [+] southern usa » Charlotte/Lee/Collier Counties SW Florida experience? (Go to) | Christian Bruns | |
|
I would dig through the county websites and look at the statutes pertaining to anything you may want to do that doesn't fit into 'conventional housing/living standards'. There are different laws by county about how large a shed can be before needing a permit, some have laws about livestock, and other things. I'm going to call up about a piece of land in Putnam county tomorrow since that county seems to have more relaxed laws than I have seen in most other places.
Another thing to think about is income streams. I knew of some people who went to Punta Gorda for the cheap land and came back because it sucked them dry. They couldn't get much work and had no other source of income and didn't want to burn all of their savings. If you are expecting to sell stuff from your land or work a regular job to make ends meet, then it would be beneficial to secure these avenues before putting down money for land. Things may have picked up a bit in the past few years, but it would still be a good idea to figure these things out. If you have income that doesn't rely on the local economy and can live within your means then you should be all set. Tiny homes seem to be frowned upon in a lot of places. Granted most enforcement is complaint driven, but it would be a disaster to invest a ton of money and have it go up in smoke. Many of the counties do allow for RV's for varying amounts of time (Putnam county allows RVs as permanent homes for instance), and they usually allow something like 6 months of a temporary structure while building a new home. It depends on the county, but the ones I have seen have a 600 square foot minimum for the outside perimeter. Not exactly a tiny house for 1 or 2 people, but this depends on many factors. If you are outside of large population centers then the taxes should be pretty affordable. As someone who has built a few hundred houses in NE Florida from small to insanely large, I would strongly recommend not using 2x4's for exterior walls. 2x6's 2' on center is not much more costly than 2x4's 16" on center, yet much more sturdy and more room to insulate. It must be nice to have so much money you can build a 16,000 square foot house and barely insulate it! Rainwater should be extremely easy. My barrels have been overflowing today. I get around 5 feet of rain a year here, it is probably similar down there. I would definitely go with a large cistern. It seems like the stuff people dump in the ground can make well water much worse than rain water. I have been using gravity to power my drip irrigation. There are numerous ways to get it to work with little energy input if it is designed right. Composting toilets will probably be variable depending on the inspector. Getting one that is EPA approved will likely have a higher chance of being approved as opposed to a home made system. Going solar should be very easy. I would highly recommend solar hot water with perhaps a small electric backup. If you are conservative of energy use and can use more energy while the sun is shining then you can spend a great deal less money on batteries. |
||
| [+] wood burning stoves » mitre saw instead of chainsaw (Go to) | Allan Babb | |
|
Is this a hand miter saw or a power saw? I would not try using a circular saw blade (skill saw, chop saw, or other) for trying to cut down a tree. Especially one attached to a machine meant to chop vertical while stationary. Green wood saws have a rake to the teeth that cuts a substantially larger kerf than the thickness of the blade. I have never seen a circular saw blade that cuts that big of a kerf compared to the blade for common arbor sizes found on construction tools.. It would have a high likelyhood of getting stuck or it could kick back. I can't imagine how awkward it would be holding a chop saw up to a tree, let alone trying to hold it firmly enough to keep it under control in the event of a kickback.
As far as cost, it doesn't seem like it is much cheaper either, unless it's the only cutting tool you own. Finding an appropriate tool really depends on location and tree size and number of trees. For a handful of trees I would get a bow saw or for smaller trees some sort of green wood hand saw. Even a hacksaw or sawzall would be fine for smaller trees. They have cheap electric chain saws that work well for light duty stuff. If you want cheap and reliable then an axe would be the best tool for the job. |
||
| [+] homestead » Your lumber storage/sorting method? (Go to) | Joel Bercardin | |
|
Woodgears.ca has a version of what I have seen a lot of people use over at Lumberjocks. Matthias at Woodgears is a true genius and has tons of projects and videos available. He also sells plans for some of the more complicated builds. Few people can look at all of his stuff and not learn a lot from it.
The projects section at Lumberjocks is also very good for inspiration. They have people from construction workers to cabinet makers to fine artists and everything in between. Some of the lumber racks I linked to make it very easy to grab a board in the middle and pull it out as opposed to needing to slide it out. It really depends on the storage area and how much space you have in each direction. Having more shelving tiers will help avoid stacking things too high so you can get at the piece you want without a lot of effort or damage to the lumber. |
||
| [+] rocket stoves » Rocket Heater UL-1482 Tested UPDATE! (Go to) | Sky Huddleston | |
|
I had wondered for a while about this. Not only are there the automotive exhaust coatings, but there are other coatings used on pistons and other parts that are only a few ten-thousandths of an inch thick that can withstand extreme temperatures and environments, and greatly increase the reflectivity of the surface so it doesn't absorb as much heat. This leads to better combustion. Not that any of it is cheap, but it is one method of getting towards a goal of getting something that is 'regulator approved'.
The mass heaters can be much cheaper, but also are custom which makes it near impossible to get uniform acceptance. I guess this is one small area where I am lucky that I don't need much heat! |
||
| [+] southwest usa » "Water to "see" what grows/weeds, and fertility?"strange advice -need feedback/rehab soil plants (Go to) | Jen Michel | |
|
I understand being buried under a mountain of information. It can be important to remember that you can't learn it all. I think it was Emeril Lagasse that said he could spend his whole life cooking and still not learn 10% of what there is to know about it. Not that it stops me from learning, but I can only know so much. Most of my knowledge is with other areas such as construction and alternative energy. I started growing native trees before I started gardening. Of course my beach trees getting 5 feet of rain a year at about 10' above sea level is quite different from your area.
I'm not completely sure what nitrogen fixing trees would be best for your climate. I have been looking up several of them and not seeing clear information of climate range. I would think just about any that you can get cheaply that aren't wildly invasive would get some roots in the ground and build soil. The catalog from that 'Plants of the Southwest' place would probably be most useful. The people there could also be helpful with identifying your native plants that start to pop up. Bring them some pictures and ask for help. I really wish I knew enough about my local weeds to be able to say 'that growing there means the soil is alkaline/acidic/compacted' and so on. Even if I did, it much of it would only be useful only in my region. I would look into the work Geoff Lawton has done. If you haven't already checked it out, he has an amazing series of videos at geofflawton.com. Of course now I can't remember if it was there or on YouTube where I saw it, but he talks about starting out with 90% nitrogen fixing trees and 10% fruit, nut, and other trees. After they get established you start to chop and drop or lose some trees, either way you will be releasing nitrogen and carbon into the soil from the tree roots. The same with bushes or any other nitrogen fixing plants. They create the habitat and over time the percentages should reverse so you end up with 10% nitrogen fixing trees and the rest will be fruit, nut, and other (hopefully some native) trees. He also talks a lot about using fungi that take up toxic gick to create long chain carbon molecules which render them inert. The whole toxic gick factor is really problematic. Perhaps trying to seek out the spaces with the least harm done to them, and growing over top of them, as opposed to digging in to the soil, can get you started. Maybe raised beds made with plain untreated wood would give you several seasons of growing herbs and annuals. Mulching and creating good fungal habitats could possibly mitigate some of the harder hit areas. Lab testing sounds like a great idea. Don't get too attached to the idea of forcing a particular plant to work. If you have consistent success with some and not with others, then maybe they weren't meant to be there. Here in Florida everyone wants a citrus tree. Unfortunately there is an invasive insect here with bacteria that slowly kills citrus. I can see them dying all over and new ones for sale all over. It's quite the racket they have going selling expensive trees with no hope of long term survival. I lost $50 before figuring out the problem. I got other trees like figs and pomegranates for much cheaper and they are doing awesome right now. I came to similar conclusions in my garden. Instead of fighting a losing battle I can save my money for better goals. I don't want to keep dumping money into something because 'I have already invested too much to lose', sometimes the learning experience is worth the cost. I want to expand on successes now and I can revisit my failures when I have more knowledge to tackle them. |
||
| [+] southwest usa » "Water to "see" what grows/weeds, and fertility?"strange advice -need feedback/rehab soil plants (Go to) | Jen Michel | |
|
How much land are you working with? I think that will dictate particular actions to a degree. Using your seeds to get some sort of ground cover going along with native plants will help the soil in many ways. It might be worthwhile to take stock of what plants are growing in the degraded areas. They can withstand the harsh conditions and might tell you some things about the soil without doing a soil test. Some of the plants may thrive under certain conditions and do poorly in others which can give you a process of elimination for the soil conditions that these plants are growing in.
Depending on how large of an area you are working with, how much labor you have available, how much outside (carbon) inputs you are willing to work with (do they contain chemicals?), and how deep your pockets are will help determine how much land you can successfully convert. Spreading your resources too thin could end up not being enough to sustain trees and hinder other long term goals. This will absorb both time and money. I like the Geoff Lawton video where he shows the progression of a food forest. Each area was one year older than the last, until he reached a mature food forest. I'm sure he didn't try to convert the entire property at once because that was too large of a scale to be successful given the available resources. Starting off by doing one manageable area at a time will keep from spreading too thin and chasing your tail trying to keep everything alive. When it comes to planting trees, I think doing one small guild area at a time is a good way to go. Trying to buy or sow hundreds of trees at one time could end up sucking up a lot of water and have a rough time advancing. Building one manageable area at a time with a handful of trees and nurturing an entire ecosystem of different layers of under story plants and the beneficial fungi and insects will work toward creating a stable system that can start to take care of itself. If you have enough mulch to put 1 inch over an acre, or 8 inches over 1/8 of an acre, chances are the smaller area with more mulch will retain more water, grow more fungi, have more insect habitats, be less prone to losing plants due to drought or strong sun, on and on. I have been down the road of trying to amend a larger area of sand to make a garden and have that carbon devoured and nutrients washed through the soil by the immense amount of rain that typically happens in my area. I learned to embrace most of the native plants as elements trying to repair the land. Trying to grow many things and expand on what survives, leaving those that didn't live for another time instead of trying to force something that didn't want to work. Native trees are awesome at their jobs, and they have many. They provide food and habitat for small animals, birds, and insects. They can bring water and nutrients up from the earth. The can provide shade with their canopy, as well as collect dew with the large surface area of their leaves. Ever see grass growing faster under the drip line of a tree? Shade, dew, and evaporative cooling can create a micro climate for the benefit of the ecosystems under a tree. Instead of trying to carpet the land with these new ecosystems, you could try to strategically place these polycultures. Spacing them out could allow them to stabilize, and when they mature and need less maintenance you can put more resources towards filling in the gaps. Hopefully these little 'islands' of intense biodiversity will start to grow outwards, eventually meeting each other. Perhaps certain fungi or insects or other life will colonize one area while different ones make their home in another. Eventually they will spread out. If there is too much over here and too little over there then they will even out. A bit of encouragement can speed up the process. My guess about watering and pulling the weeds to encourage grass was something so ingrained in what they tell everyone that they told you as well. It might be worthwhile to water a few small areas just to see what native 'weeds' pop up so you can figure out which ones are particularly worthwhile to encourage. A lot of the zone 1 stuff will be similar to above but with less/smaller trees. Maybe a lot of nitrogen fixing beans and shrubs. Anything that can grow fast and increase moisture retention should be beneficial. Getting everything going for one space as opposed to trying to do everything at the same time seems to work well for me. |
||
| [+] tiny house » USB Power Delivery (Go to) | Tobias Ber | |
|
Not really as far as I know, save for a few Intel Atom tablets with keyboards magnetically attached, but the new USB PD standard is supposed to be designed to allow charging of laptops with USB and sharing power with devices. For instance, any USB device with a power source or battery can charge another USB device that has the same or lower power profile. Their documentation goes over the proposed methods of determining what does what under different circumstances.
It probably would be better to use a DC-DC power supply designed to charge a laptop from a cigarette lighter/power port. There are also a number of PC monitors out there using ~19V power bricks which could also be powered by one of those laptop car chargers. Combining that with a M3-ATX Pico PSU from mini-box or similar power supply can create a nice off grid solution for a desktop computer. I picked up one of those M3-ATX PSU's many years ago and have it running the computer I am typing on now. I dug it up more than a year ago and found that for lower power computers, using it with a power brick used less energy than standard ATX power supplies. The computer I was testing went from ~40 watts at idle to just under 30 watts. 10 watts may not seem like much, but a 25% reducing in power usage is enormous for an off grid situation. I got a newer motherboard with a built in CPU that draws around 12 watts idle and 22 watts max. It isn't fantastic, but it does everything I need. These numbers are via a power brick plugged in to a Kill-A-Watt meter, so I am certain it would be more efficient directly connected to batteries. I don't have any good test equipment to measure power draw, but I will try to give it a shot in the coming months. This again is where the USB PD would shine. I could rig up the 12VDC USB power to this computer and be well below the 100 watt limit. Not that I need it for myself, but it could introduce new markets for green building and power. There is a race to the bottom of power consumption between ARM and[ x86 based processors. Right now on the desktop the Intel x86 processors still have the best performance per watt per dollar spent from what I have seen for desktop solutions. However the lines are beginning to blur and it is creating a lot of new opportunities for powering devices with renewable energy. The new Raspberry Pi 3 certainly looks nice for quite a few tasks such as lightweight desktop or HTPC and takes USB power. Not to mention the dozen of developer boards that have come out since the success of the Raspberry Pi. |
||
| [+] rocket stoves » A castable burn chamber (Go to) | Jen Siegrist | |
|
DIY Refractory Compositions thread out at the Alloy Avenue forums has a number of recipes for refractory. I made my first furnace and a few prototype stoves using a home made fire clay based refractory. There are far too many possible variations to effectively cover in a single post, but there are a few points that are helpful.
Obviously the first point is to use a high firing clay. Adding grog also helps a great deal. Grog is basically bits of clay that have previously been fired and then broken up. Having grog in your mix, preferably with a multitude of sizes as opposed to finely sifted dust, will reduce shrinkage. Being that this previously fire clay has already shrunk it makes a great addition to a fire clay hot face. Another thing that can be helpful is the shape and design. Given that these clays can and probably will crack, it makes sense to shape it in such a way that it can't fall in on itself or easily topple over. You can use a knife or similar to add 'dashed lines' so it will more likely crack in places you designate as opposed to wherever it feels like cracking. If you wrap a more insulating material around your hot face (insulating refractory, ceramic blanket, home made insulation) this can also be shaped and designed to hold the hot face in shape. I have even seen people make special shaped bricks out of refractory and stack them up. any of the shrinkage or cracking would happen at the brick stage as opposed to happening in the finished product. Given the possible temperatures of these heaters I would avoid using sand in the hot face, particularly if you are going to be adding insulation. It will turn to glass, and this molten glass will act as a flux and slump your hot face like an ice cream cone on a hot day. While I was fairly fortunate with the first furnace I built, I only got it up to aluminum melting temperatures. As temperatures increase the chance that a home made refractory mix will fail over time increases, be it hours or years. Something made to withstand intense temperatures like Missou Castable Refractory would be better. I have heard of guys on Alloy Avenue destroying Missou with a good oil burner when melting cast iron, but it is supposed to be one of the best refractories available. You could use this as a hot face and make your own insulation. A lot of the furnace construction threads over there use the same principles as building a rocket stove/RMH. They have brought up some rocket stove stuff over at those forums and they have very experienced people there, including people who worked in proper foundries for a living. I'm sure if you can't find the information you need through searching that the people there would be capable of giving you plenty of help and ideas. |
||
| [+] tiny house » USB Power Delivery (Go to) | Tobias Ber | |
|
I have been using one of these - DROK 3W + 3W Amplifier. It isn't going to be enough for a block party, but certainly enough for me out in my shed. I used an old USB cable for power and an old headphone cable for sound input. What is really nice about that device is the size. The knob I put on it is bigger than the whole unit! Roughly postage stamp sized with a small potentiometer. A pair of Sony satellite speakers someone was throwing away work well for my needs, and I couldn't beat the price.
I had previously bought another sub $10 amp for a car that I had directly connected to my batteries powered by the sun. It worked fine but had an annoying color changing LED light inside. I eventually gave that to my mother and hooked it up next to her bed as a headphone amplifier for her TV, after removing the LED of course. It worked as well as could be expected for the price. I definitely can't wait to see 12V USB power become common. I have been using cheap automotive interior replacement LEDs for task/emergency lighting. I have run a pair for a couple years straight and they still appear like they haven't degraded significantly. They draw 4 watts at around 14 volts, so you could hook up a bunch of them in parallel on a USB cable that can handle up to 100 watts. It would be pretty nice to have USB ports in your ceiling to customize your lighting on a whim. For some reason I have be really enjoying making my own light fixtures out of stuff most people would throw away or recycle. |
||
| [+] tiny house » USB Power Delivery (Go to) | Tobias Ber | |
|
Using automotive fuses is an excellent idea. You can even use a fuse block from an old car as your fuse box. There are some screw down types that would be easy to use for making a custom fuse box. Plus you can go to a junkyard and get a lifetime supply of fuses for just a few bucks.
I have used standard household receptacles and plugs for a quick fix, but I think it is a bad idea to implement in a tiny house. For one, anybody who doesn't know any better will just try to plug something in that isn't meant for it and could blow fuses. The biggest problem for me is the price. I can cut cords off of things and I have a box full of old receptacles that I can use, but I save those for other projects. The XT60 connectors are rated for higher amperage DC at a cheaper price. I have also used standard household light switches, but they are not made for DC and if you draw a lot of current across them and use them frequently then they can burn out much faster than they would using them with AC. There are lots of places to draw inspiration from and reuse existing hardware. I guess for many people building their own PV power system then they are familiar enough with what they are doing that they can get away with things that other people would surely have problems with. I'm just inspired by the whole USB connector situation where it works great at what it does and is the same around the world. |
||
| [+] tiny house » USB Power Delivery (Go to) | Tobias Ber | |
|
Thanks for the replies. I think one of the main issues with using DC power ports has been a lack of standardization. It causes fragmentation which can make things more expensive and inconvenient. I agree that many people will benefit from having cigarette lighter jacks in an off grid situation, but I wish they weren't the norm. They are massive connectors with connection issues that can cause increased resistance or a complete lack of connection. They were made for cigarette lighters to fit inside.
I'm hoping the new USB PD standard will be expanded in time to handle 10 Amps like typical cigarette lighter circuits in cars. For something more powerful, the XT60 connectors are cheaper and much higher current capacity than many other options out there. They seem to be popular with the RC crowd. I'm thinking of using these and making a couple of break out cables to go from XT60 to a cigarette lighter, with an appropriately sized fuse built in of course. I think these XT60 connectors will be particularly useful when installing some permanent DC appliances, since it will be easier to work with as opposed to hard wiring something in place with a junction box. It would also be really nice for something like this to be molded into a receptacle for use in standard electrical boxes. This would make for a clean and easy installation that would be more easily accepted by governing bodies. It doesn't necessarily have to be the XT60 connector, but something with similar properties that could become standardized would make it easier and safer to install and use. Until the USB standards start to catch up, it wouldn't be a bad idea to have a tiny home prewired for it and use something like XT60 connectors. |
||
| [+] tiny house » USB Power Delivery (Go to) | Tobias Ber | |
|
I have an idea. It is not mutually exclusive to tiny homes and I don't think this will greatly benefit people with grid power or large power generation systems. The idea is that many things run off of low voltage DC power and the number of devices using this type of power is increasing. Or maybe it would be more correct to state that many higher voltage AC devices step down that power to DC and a lot of devices are on the verge of putting a USB connector between this step-down converter and the device.
The new specification I came across several weeks ago is USB Power Delivery (USB PD). This specification has several profiles, the highest of which allows for substantially more total power to be drawn. This can remove many of the region specific high voltage power cables from typical computer systems (and countless other devices) in favor of the Universal Serial Bus (USB) connector. Having power conversion devices for your home and vehicle will allow you to power and/or charge a myriad of existing devices, with vastly more devices on the horizon that can use a versatile standardized plug. You can already find many power adapters and device that provide USB power, and I believe it is inevitable that billions of new devices will roll out over the next few years utilizing newer USB specifications. For those with large power generation sources, it will be as simple as plugging in an adapter. There are probably many people with tiny homes that run high voltage cables through the walls and wouldn't consider anything less. But for those going off-grid and looking to maximize efficiency, I think the new USB-PD spec is worth serious consideration. Given that the standards are already published, it would be very easy to run wires and even provide the power needed to run these new devices during the early building stages of a tiny house. The minimal extra cost and labor to do so could pay dividends as opposed to omitting it and wishing you had done it after the fact. The USB PD Wiki Page shows the basic table of the MINIMUM power outputs of each voltage requirement for particular power profiles. After digging through the information from reference 100 of that page, I found the minimum requirement for any of the power delivery cables is 5 Amps. Given the inexpensive nature of wiring a tiny house, it would probably be worthwhile to go above and beyond that minimum. Also noteworthy from the documentation was that while the 5V, 12V, and 20V minimums must be satisfied to meet a particular profile, aftermarket power supplies may include additional voltages as they see fit. These would be ancillary to the USB PD standard profiles. I doubt you would find too many devices using more than a few voltages on any single device, but it wouldn't hurt to add an extra pair of cables if you are running wires depending on the situation. Even if this seems a bit over the top, many devices today are already exceeding previous USB power standards. Providing a steady power source of 5V 3A will meet the maximum power requirements of the USB Type C connectors that have been equipped on newer devices over the past several months. This doesn't have to be a complex installation. I added a car USB phone charger to my solar PV setup by opening it up, soldering wires and connecting them to my charge controller. There are many voltage converters out there that can accomplish the same goal without any soldering. Once USB PD becomes the norm, similar voltage converters will be every bit as easy to find. If your tiny home is prewired for it, then it could possibly be installed in a matter of minutes. The one thing I think about with the new USB PD spec coming out is all of the non-computing devices that will come with it. Think of all the different lights and fans and battery chargers available that can plug into the current 5VDC USB connectors. The new wave of items powered by USB PD could easily cover most of the needs for a tiny home or other off-grid area. The more things you power directly from DC with an off-grid power source, the smaller or fewer power inverters you will need. This can be a savings of energy and money. I hope this gives people some food for thought. |
||
| [+] rocket stoves » I'm new to rocket stoves. Idea question. (Go to) | Glenn Herbert | |
|
Given that it is a greenhouse with that large of an amount of water, it could be greatly beneficial to make it possible for the sun to warm up the water prior to cold weather. Adding insulation to the north side of the greenhouse could also help trap some heat. If you used something like foam or wood panels, these could be moved to block the sun from hitting the water when it is too warm.
Van Powell on YouTube has a number of videos about rocket stoves, builds a greenhouse with one inside, and talks about using thermal mass, such as water, to hold more consistent temperatures. Your larger scale project would have additional considerations, but his videos are rather well thought out and should be able to help you accomplish your goals. |
||
| [+] soil » Question regarding adding worms to soil (Go to) | Matt McSpadden | |
I had never given this any thought before, but after searching for 'invasive earthworms', it appears that there can be cause for concern. In North America glaciers killed off many life forms, including earthworms. The ecosystems there lived without earthworms until they were introduced by European settlers. There is also some information about worms in Australia in this link Australian Earthworms. My guess would be that if you can already find certain species on your land then it probably wont make much difference to create habitats for them to reproduce. With the substantial rainfall I receive here, it was very easy to find worms on the North side of my house. Keeping an area moist and blocked from the sun by a structure (in your case on the South side), tree, bush, or other form of shade will usually attract local worms. You can add mulch or other organic matter to feed them and then harvest some for whatever purpose. I don't find too many in my garden because it gets too much sun and is rather low in organic matter, as it used to be all beach sand. Building small habitats in the garden will be more productive than tossing them in if there isn't adequate habitat for them to survive. The information from my invasive earthworm search is very thought provoking. I wonder if having invasive earthworms has shown detrimental effects to people trying to establish food forests. Or perhaps certain forests that don't natively have earthworms are having issues because there is not enough predators or some other element missing from the ecosystem. In my case, adding habitats for lizards and worms brought in armadillos, another invasive species which seem to eat the worms and lizard eggs. It appears to me that the armadillos are merely another mechanism trying to close some open loops in the local life cycles. |
||
| [+] financial strategy » Marketing: My 100 Things (Go to) | Waldo Schafli | |
|
This list of 'getting stuff done' is very inspiring! While I have no business experience, I do have some tips dealing with the HTML/website stuff. My go-to method when working with computers is to cheat! This forum has a pretty nice setup for posting replies, and you can take advantage of it to make links. For instance, you can click the 'Post Reply' button to open up the forum text editor and click the URL button along the top. It lets you enter a web page URL and then enter text to create a link. It also shows the code method used between the buttons on top and the text box, but this generally isn't practical for many people. Trying to learn a new language when you don't use it very frequently is an exercise in futility. Making use of a tool like a forum text editor can save a bunch of time. You can simply copy the code that the editor creates and paste it other places, such as your signature or your website.
I believe you can do the same thing to make pictures that are links. I will try and go through the steps and make a link out of your .gif posted above. The Img button allows you to enter the URL of an image. Punch in the URL and it should add the img tags around it. Now you can cut the info and use the URL button. Punch in the URL you want to link to (such as your blog) in the first window, and then paste in the img info you previously cut into the second window as the description. I find it easier to remember a few steps of doing something I am familiar with (such as using a forum) as opposed to trying to remember a new language. Here are the results of me using your .gif image to link to your blog using these steps:
Adding links to your website and blog in the signature of different forums you use should make it easier for people to find out more about what you are doing, and what you have for sale. Adding clickable pictures to the top and bottom of all of the pages of your web site and blog will make it easier for people to be redirected to the home page, similar to how many forums, blogs, and commercial websites work. Adding links to your other site(s), shop, and current kickstarters can make it much easier for people to navigate to all of the items and information you have to offer. I tried learning a tiny bit of html about a decade ago, and the person running one site said he learned by copying other code he ran across on the internet. If you keep copies of things you do in plain text files (such as Notepad on Windows) then you can copy it again later down the road when you need it. If you aren't doing a lot of complicated methods then simply using any forum editor can usually yield the results you are looking for. Once you get things the way you want it, you can use this as a template for the whole site to make it more uniform and easy to navigate. Hopefully some of this is helpful to you. Good luck with the kickstarter! |
||
| [+] gear » Sliding pipe, wood splitter. (Go to) | John Duffy | |
|
Smart Splitter - That tool uses a weight to split wood. It is a pretty interesting design. Looks like it is a lot easier than swinging an axe. Amazon also has manual wood splitters similar to the one posted above at a much cheaper price than the smart splitter.
It should be fairly easy to add weight to that splitter without a welder. You could find a pipe that fits over the handle and an appropriate pipe cap. Cut up the pipe lengthwise a bit at the end opposite the pipe cap and clamp it in place. I'm sure someone could get creative from here and use items and tools on hand to create something effective. You could pour metal into the pipe to add more weight at the pipe cap. Zamack 27 - the alloy mentioned in that link has a strength similar to cast iron but melts at a lower temperature than aluminum. I have learned tons of stuff from that forum, some really excellent work happening over there. |
||
| [+] conservation » Faulty reasoning? Heating water electrically... (Go to) | Peter VanDerWal | |
|
If there is an existing circuit for an electric range that is no longer being used then 240V would be more efficient. The higher voltage device will draw less amps for a given amount of watts. It allows you to use smaller diameter conductors, or in the case of reusing larger diameter conductors it will have lower resistance. This is one portion of why it isn't really feasible to get 100% efficiency as the resistance of conductors will lose heat, likely in places where the heat can't be utilized as effectively. If the kitchen is near the point where power enters the house then it may be easy and cheap enough to run a short 240V line. If you have to do a long run plus buying new breakers plus hiring someone to help with installation and it can quickly become more expensive than the savings of reusing an existing 120V circuit.
Any use of solar that can warm the house or water may be beneficial in a cold climate. The tankless system would probably be more efficient on grid, but is dependent on usage. Having multiple points drawing hot water simultaneously will need a considerably more powerful (expensive) unit. As mentioned above, a tank system could work well in an off grid situation. Using excess energy being produced while it is being produced, such as sun shining on a PV system with full batteries, means you can make use of energy that otherwise isn't being stored.Missouri Wind and Solar has a charge controller designed for wind, but I believe can be used for solar and hydro, that sends energy to a dump load when the batteries are full. This dump load can also be a water heating element. His youtube channel has videos about this and tons of other off grid and energy saving techniques. |
||
| [+] conservation » Faulty reasoning? Heating water electrically... (Go to) | Peter VanDerWal | |
|
My guess would be that it is extremely dependent on the situation. If you set up the tank and tankless water heaters in series, they would both be running when the temperature drops below the threshold set by the thermostats. Even assuming that threshold is set higher on the small tank and lower on the tankless heater, once that lower point is reached then both would be consuming energy. Without any solid facts to back it up, I would say it would consume more energy simply due to the fact that there is a loss of energy when you convert it to a different form of energy (in this case electricity to heat). The 220V heater will probably be more efficient than the 120V heater.
Having them in parallel to perform different tasks could potentially save much more energy. This seems especially suited to your situation since you are already conscious of your hot water usage and have actively minimized waste. Places that may demand more water at times, such as perhaps the bathroom, could benefit from the 'on demand' nature of the tankless heater. Other places that would normally use more consistent levels of hot water, perhaps the kitchen sink, could use the small tank. Once it is depleted you either stop and wait or source hot water elsewhere. The biggest benefit of this that I see would be to use two small heaters as opposed to one large 'whole house' solution which could be much more costly. I don't think the two in series really compliment each other as a whole house solution. With one or two people conscious of the water usage and understanding the benefits and pitfalls of the situation then this may not be a large issue. Hosting guests, even after being informed, would likely lead to someone ending up less than happy. If I had to guess I would say most people used to electric hot water want hot water now and that may be part of why you don't see tank and tankless systems used together. That and the tankless system being designed to not use a tank and sized for a given amount of flow. Once the tank runs out you are at the mercy of the limitations of the tankless heater. Trying to flow more water than it can effectively heat will result in less than appropriately hot water. Is the current location of the water heater in a heated space? Or perhaps a basement or other place of relatively stable temperature? Given the cold temperature of the water supply I would use the old water heater as a holding tank. Disconnect the electricity and strip the insulation from around the tank and it could be used to hold and warm up the water prior to going into the new water heater. This is similar to how some solar water heating systems work, except you would be removing the insulation instead of adding to it. If you heat your home with electricity then this wouldn't be efficient. If this is in a basement, or in a living space heated by wood then it should be able to save electricity. This goes back to my first sentence about depending on the situation. |
||
| [+] rocket stoves » Pocket Rocket Beer Keg - Stainless steel offgassing?? (Go to) | Mike Phillipps | |
|
The exhaust pipe looks very reflective. It probably isn't giving an accurate temperature reading and there could be substantially more heat going out the exhaust. If it is drawing air in that well then that air must be coming from somewhere. It could be that it is pulling an amount of cold air into the house that is killing the efficiency of the stove. In an uninsulated space it probably only effectively warms up the area immediately around it. You could set up one of those reflective emergency blankets and sleep between that and the stove to stay warm but I doubt it could warm the house as-is.
Adding some sort of restriction to the exhaust could help slow down the burn. I remember seeing a video with the exhaust routed into a second barrel that was filled with bricks as a thermal mass, but I can't seem to find it at the moment. Rocks or other mass could also be used. It wouldn't heat the entire place but it could be enough to hold you through till it is warmer when you can build a better stove/heater. |
||
| [+] tiny house » Box truck tiny house - Installing windows? (Go to) | Jo Trauma | |
|
I'd imagine you could buy a couple of steel studs and rivet them in place. You would have to make a header for the existing roof structure to dive in to and securely attach this header to the new studs. It should be fairly straight forward if you have experience building one out of wood, if not you might be better off with the smaller windows. There could be a few alternative options in this space. Going to a junkyard and getting a couple of matching sunroof windows comes to mind.
Something like an SUV with a large flat roof could yield a decent window around 2 - 3 feet long and a width that fits between your studs. I remember almost 20 years ago getting one out of a junkyard for a Jeep Cherokee and installing it in another Jeep Cherokee. As long as you measure well and take all of the hardware from the donor vehicle it should be a success. |
||
| [+] introductions » Hello permie people! (Go to) | Rick English | |
|
In an effort to get involved with the forums I have been browsing around and found this 'introductions' forum, so I figured I should post here. My name is Daniel, not quite 36 years old, and currently looking for a small piece of land to do some smaller scale permaculture projects. I planted my first tree about 9 years ago and slowly got interested in native trees here in Florida after watching the deforestation of huge amounts of land. Right before the 'housing bubble' burst, there were large amounts of land that were leveled and swamp areas turned into bare land for building houses. I was a cog in that wheel framing houses and condos and such. While I did enjoy the work, I didn't like the destruction of wild areas and building gigantic and unnecessary houses that people can't even afford to live in.
I have since put a lot of time and effort into learning about tiny living, alternative energy, growing plants of all kind, and living a life that is less destructive to the land around me. I have always liked to learn and do things for myself and a small permaculture homestead seems to fit in well with my skill set. I still have a lot to learn about growing things, but I have been learning a lot from reading and observation. I have experience with carpentry, electrical, and mechanical work. I have been running a single 145 watt solar panel with 100AH of batteries which I have been using to charge my cell phone and MP3 player, run lighting in my shed, and do some other experiments such as running a low power computer. I like the idea of reducing my electrical needs as much as possible and using energy while the sun is out to reduce the number of batteries I need for energy storage. Minimizing my need for energy and finding alternative methods like using hand tools instead of power tools or a wood fired stove instead of electric is very appealing to me. I've been following the tiny house movement for a while and think it fits in well with permaculture and living a healthier lifestyle. Working in the garden, walking amongst the trees, creating outdoor living and working spaces - I kind of got used to being outside all day even in the brutal heat here when I was framing houses so it feels normal to spend most of my day in spaces without air conditioning. I have a few ideas revolving around tiny houses that I am hashing out in SketchUp and look forward to sharing my results with others. |
||
| [+] composting » The concepts of compost tea doesn't make any sense to me.... (Go to) | Harry Soloman | |
|
Alberta Urban Garden on YouTube has the first part of a series on compost tea. I really like the channel because he finds sources that are hopefully outside the reach of US chem AG, as well as using lab testing. He also qualifies his results with some of the possible ways that his testing could be flawed. Lab results alone don't always tell a complete story, but they can be a useful tool for figuring out what is going on in your soil when you make certain changes. The videos plus the comments can reveal some interesting information and methods used by others.
I personally try to directly bury stuff in my sand pit I call a garden. It is slowly getting better. I have used compost tea but using my own method. I would simply put some compost in a bucket and add a little bit of water from my rain barrels while I'm working outside. I then fill up a glass and dump it in at irregular intervals when I am passing by with the hope that the action of dumping it in mixes oxygen into the water. Once it was full I would use it to feed my trees. Since starting the direct burial method I haven't had much compost left to make tea with and I don't have any measured results other than my trees haven't died and appear to be growing well. I imagine in my case that adding organic matter to my soil to retain water and nutrients is more important than compost tea since we get around 5' of rain a year which can wash nutrients through the sand and into the subsoil where some garden plants can't make much use of it. |
||
| [+] rocket mass heaters » Is heating a 30' diameter Yurt (708 sq. ft) with a RMH realistic? (Go to) | Katya Coad | |
|
I don't have any experience with a rocket mass heater, but I do have a few points to share that should be useful. If you are using that foil bubble insulation with the foil as your interior wall surface, then that should be extremely beneficial with the rocket mass heater. The idea is to warm the mass up so it radiates heat for long periods of time. Aluminum is claimed to be able to reflect over 97% of radiant heat, as it is the third most reflective element in the visible spectrum and the most reflective element of UV and IR light - IR being radiant heat. This reminds me of the setup I saw on Dual Survival where they used a reflective blanket behind them and clear plastic facing the fire so light could come in but the air was trapped and the radiant heat gets to make 2 passes. Having the radiant heat reflect back into the space with a large mass radiating heat for a long time should keep it quite cozy.
As far as feeding the fire, it depends on the size of the RMH. A larger diameter system will have an equally larger burn chamber. I have built small prototype stoves for cooking using soup cans which needed to be fed every 5 minutes or it would go out. Of course pulling up a chair and cooking and feeding the stove wasn't a big deal in that instance. I think the idea is to figure out a time of day where you are busy inside or near your yurt working, reading, unwinding or similar where you can refill as needed until it is sufficiently hot, and then do that as often as needed, which could be every day or 2. For a mass large enough to heat that space the diameter of the system would be far larger than my little prototype and thus would have an equally increased time before needing to be reloaded. You should be able to easily work it in to a routine where you do a certain daily task and walk by the RMH every so often to fill it up. The barrel of the RMH is designed to give off radiant heat in the short term, long before the mass heats up. This should negate the need for a second heater, although if you already posses one and have room for it then it wouldn't hurt to keep it around. I'm guessing you would have different areas inside for living and sleeping. You could use a radiant shield to put near the barrel to reflect heat towards a particular area if you are away for more than a day where the mass has gotten cold. This could be as simple as a sheet of steel or aluminum, something non combustible. I could see someone reusing an old car hood. I imagine having the barrel positioned where you want immediate heat would be an important part for planning out a house, with the yurt being more configurable than a standard house this should be easy to figure out. My stove did have some mass added to it which retained heat for quite a while. I also have a metal melting furnace that stays warm for hours after a melt, so I think a properly built RMH would stay warm for a very long time. Insulating the mass from the ground beneath it would be likely be critical to avoid losing heat to the earth. Having some sort of floor such as cedar planks would keep air, objects, and people from losing heat to the floor. Your location geographically as well as micro climate will probably dictate how successful this would work. |
||
| [+] wheaton laboratories » Come visit Wheaton Labs: The Seppers Program! (Go to) | paul wheaton | |
|
That's exactly it. Now I just need to convince my girlfriend to go with me for a few days. Once I get a definitive answer from her I will inquire further. Thanks!
|
||
| [+] wheaton laboratories » Come visit Wheaton Labs: The Seppers Program! (Go to) | paul wheaton | |
|
Thank you for the reply. I have listened to roughly half of the podcasts and read a few dozen pages here on gappers and lab projects and the Obligation is Poison thread and many others. I think there may be some people looking to take a vacation and end up becoming a gapper, while others may be in the rat race looking to be a gapper but need a breather to unwind and wrap their head around permies style projects. I'm usually not someone who spends money to vacation, but my eyes lit up when I saw this thread!
I figured since their may be other people looking to do both of these that a bit of cross pollination of ideas could yield positive results. From the gapper program 2.0 thread - This appears to cross over some of the things here. I was just wondering if someone were to, for instance, rent the Love Shack for 5 nights ($250) plus start being a gapper ($100) if it would be $350? I think of it as a way to stay ahead of obligation creep. A chance to learn or perhaps teach and do work without any build up of resentment for consuming resources since I paid to be there. These two things just seem to compliment each other very nicely. It has changed my opinion from "I probably should be a gapper" to "I really need to make this happen!" I figured sharing my thoughts might get some other people motivated. Either way I am going to throw money at you. I have been living small while helping other people and the Love Shack is a cool tiny house similar to what I want to build for myself in the future. I look forward to staying there! |
||
| [+] wheaton laboratories » Come visit Wheaton Labs: The Seppers Program! (Go to) | paul wheaton | |
|
Some of the things covered by the cost of a stay also seems to be the same as the stuff covered by the $100 fee for a gapper. Would a potential gapper be able to have a small vacation and then start being a gapper without having to pay the full $100? I like the idea of paying my way in advance for a few days and having a slightly longer orientation time that's on my dime. These are very reasonable prices for a stay!
|
||
| [+] alternative energy » Making multiple power sources play nicely (Go to) | Rob Hillsner | |
|
My idea to solve your problem is much simpler than the others, but it requires a change of strategy. I don't believe in the 'all of your eggs in one basket' method for power. I personally like the idea of having separate 'units' of power generation and storage for different tasks, similar to how houses use circuit breakers for different circuits. I would make a more robust solution for my refrigeration, and a less robust one for a non-essential circuit.
My idea for you revolves around the notion that it is considered unnecessary to use a charge controller if you are putting out a volume of charge that is less than what it takes to charge the battery bank in 20 hours time. If you split off 50AH or more of your battery bank and ran something such as a circuit for lighting and charging small devices or other low power electrical loads, then you should be able to simply run the hydro 24/7 @ 2A without a charge controller. If you had a bit more storage on this circuit (say 150AH or more), then you could turn up the water to the 6A output when you need it and still not need the controller. The internal resistance of the battery should emit the extra energy as heat and being spread across such a large surface area it wouldn't cause any damage. It would be wise to look into this idea from multiple sources to see specific recommendations on what charge to what size battery bank and so on. The problem with using a valve/servo/whatever mechanical device to open and close the water source to the impeller as a means of controlling charge is that if it gets stuck open just one time you could end up destroying your generator. However it could be a possibility to design such a system for emergency shut off and check the functionality regularly. This would be a good idea no matter what method you go with to connect to the batteries, as it could save the generator from damage in the event of a wire disconnecting or catastrophic battery damage. A small Arduino Nano that cuts off water with dangerously low voltage (say 10 volts) and a cut off switch on the circuit for testing. You could go as mild or wild as you like with an Arduino. I have one question about the hydro generator: Does it use a permanent magnet DC generator, or does it produce AC and step it down to DC at the water source? AC, particularly above low voltage (50 volts) works much better over longer distances than DC. If it does produce AC at the source, it would be best to send that AC across the long wire to the batteries, and then step down to proper DC voltage at the battery bank. You would see a significant increase in power output. You can also increase the wire gauge of the wires connecting to the generator to get more of your energy to the batteries instead of being lost as heat to the resistance of the wire. However if it is really that long of a run it may be cheaper to buy a 100 watt panel for $100 and get more bang for your buck there. One last thing I want to note is that even though amorphous panels can do better in low light conditions, they also have a lower life span. I'm pretty sure I heard it on a video from Green Power Science and read up on it in other places. Approximately 10 years (variable depending on usage) before a serious drop off in power output. This is what also worries me about thin film panels, as they haven't been around long enough to test their lifespan. Mono and Polycrystalline panels degrade much slower, and I have heard of ones 50+ years old giving around 70% of their initial rated power. It is cheaper and greener to just oversize your array by a few panels with polycrystalline in many cases. If you have more than enough power in summer and too little in winter you can put a steeper angle on the panels to help moderate that issue. This will put more sun on the panel when the sun is low in the sky at the cost of less sun hitting the panel for a given moment in the summer. The extra daylight hours make up for it not being aimed optimally. Hopefully this gives a few good ideas to people. Good luck! |
||
| [+] tinkering with this site » please test the new freebie pages (Go to) | Wade Glass | |
|
The YouTube video link is broken on the Willie Smits page. The Wood Burning Stoves 2.0 4-DVD Set picture is broken on all of the links. This is on Firefox 43 as well as Chrome 47.0.2526.106 (64-bit) running Linux if that makes a difference.
Also, the Rocket Mass Heater podcast gob links to the Rocket Mass Heater Annex6 PDF. Seems like some simple fixes to get everything running smoothly. |
||
| [+] recycling » Good use for halloween candy? (Go to) | Greg Martin | |
|
Three words - Swedish Fish Theory. Look it up.
Using it to smooth over people when you need service can make a big difference between great service and terrible service. Need to have an item replaced? Give them candy. Need to have your car fixed? Give them candy. Even if they don't eat candy, I'm sure they know someone who does. It can't hurt to try! |
||
| [+] lawn » I want to have the world's weediest lawn. (Go to) | Anne Miller | |
|
I like this! Granted my experience is in a warm climate, i have seen many desirable plants that are able to out-compete the hideous local grass. I really like the idea I heard on the Permies Podcast to save a seed mix. Get as large a variety of seeds as you can and start tossing them around. Plants that don't make it didn't belong there, and will feed the other plants. You can mix more conventional seeds, like lettuces and Brassicas, with wild edibles to have a 'lawn' that is really low on grass and rich in edible greens.
|
||
| [+] conservation » Save 50% power by insulating your fridge (Go to) | Chi Monger | |
|
This is simply a 'must do' DIY modification. I had set a blanket on top of my chest freezer and noticed how cold it was a few hours later one day a while back. I added 1.5" foam to the bottom and it helped the machine to kick on less frequently. Next I need to add insulation to the top. I just recently noticed how efficient newer small chest freezers can be and with some extra insulation I could rather easily run one with a small PV power system (~$500). This is excellent for reducing the cost of going with renewable energy.
I also saved a few drawers from old refrigerators and use them in in my refrigerator to help keep things organized (which avoids waste), to keep some cold air from spilling out when the door is opened, and also I can simply grab the drawer I need very quickly without leaving the door hanging open while searching. |
||
| [+] projects » Permaculture messages/art on tees, totes and stuff (Go to) | Barbara Manning | |
|
Awesome! I like the 'Resistance is growing' shirt. I have two questions: 1- Will there be an option for the permies slogan and site on back for all shirts? 2 - Will these be available locally in Jax, perhaps even at the Beaches Green Market? Either way this is great stuff and I will probably pick one up in a couple weeks.
|
||