Orin Raichart

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since Nov 25, 2018
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solar wood heat
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Recent posts by Orin Raichart

connor burke wrote:Im curious about the apliation of using a solar heated chiminy to heat the lower bit while drawing moisture of of the fridge like a yakital thing. By creating a lower air pressure it could cool the food and such via evaporation easier. Yall have any thoughts

\\


...draw me a simple picture so I can understand (paint if windows, gimp if linux  who knows what mac does any more)
3 weeks ago
Okay here we go, I did do some research and found these a while ago.

Here's a link to multiple tests:
http://www.appropedia.org/The_Design_and_Development_of_a_Solar_Powered_Refrigerator


...I swore I found one that did not require any pumps or fans or compressors...the heat was released overnight and the sun drove the process all over again during the day....


....sorry, going off line for awhile.....hope to come back and find you've put together a system!

3 weeks ago
This group uses fresnel lens to heat veggie oil beyond what water can take before vaporizing and store heat as their energy battery.

They use the heat two ways: directly to cook using metal jackets the oil moves through; then they also get electricity by running it thru their stirling engine.....oops they also use it to pump water with.

You can find the physicist in Germany and their test bed in Portugal.

Tamera.org

and this guy's thread on permies...his son saw it first hand!

https://permies.com/t/30950/Stirling-Engine-Tamera-Portugal
3 weeks ago

Tim Day wrote: I could use anhydrous ammonia to get started.  



Yes you can but it is very poisonous, on the dhs watch list, and your system must have no room for error.

Here's the basic idea
https://en.m.wikipedia.org/wiki/Absorption_refrigerator
1-Evaporation: A liquid refrigerant evaporates in a low partial pressure environment, thus extracting heat from its surroundings (e.g. the refrigerator's compartment). Because of the low partial pressure, the temperature needed for evaporation is also low.

2-Absorption: The now gaseous refrigerant is absorbed by another liquid (e.g. a salt solution).

3-Regeneration: The refrigerant-saturated liquid is
heated, causing the refrigerant to evaporate out. The hot gaseous refrigerant passes through a heat exchanger, transferring its heat outside the system (such as to surrounding ambient-temperature air), and condenses. The condensed (liquid) refrigerant supplies the evaporation phase.

Now that you've pressed the point, I do remember someone creating a solar absorption frig....let me see if I saved it in my data files tonight.
3 weeks ago

Susan Boyce wrote:All I want is to plant and water plants that I can eat. Green groomed lawns…..who needs it! Been working on this for a few years now but I still have to mow ARGH!


Trade your gas mower in for an 8" diameter gas rotor tiller....pretty sure that'll take care of your groomed grass area in  couple weekends :)
3 weeks ago

Tim Day wrote:…making a walk in freezer that uses heat to cool, but not very knowledgeable about such stuff. Just wondering if I'm the only one.



Ever since reading Mosquito Coast, which by the way I consider propoganda to keep people afraid of trying what the protagonist tried, I really wanted such a device! Alas, simple tasks kept me too busy to try....I am really hoping this thread gets the attention of someone who has done it.....there are things called cool balls which are no longer in production....but I want the kind which can be built not bought!
3 weeks ago

Huxley Harter wrote:I'm considering the idea of buying a piece of property and then living on it primitive hunter gatherer style for a year to observe the land before starting my farm. Hunting for food, foraging, trapping, walking the landscape and camping all over the place to get really in depth knowledge of the landscape. Plus, living outside 90%of the time, I would learn to predict weather, gain knowledge of natural ecosystems, and really get in tune to what's going on there. I've not yet flown the nest yet 1 1/4ish years to go.
Does this idea sound crazy? Neat? Terrible? Awesome??? What are your thoughts?



Having done this for much shorter periods of time, here's what I've learned;
-you'll need  shelter, fire, water, food...in that order;
-your shelter should never be more than 50' from your water source;
-don't use fire wood surrounding your shelter, save it for emergencies....same goes for edible plants and game...this way your cupboard is stocked;
-get four loops of foraging 5 to 10 miles long and rotate between them every 35-40days;
-dont try this on land that has range cattle, they destroy your edible plants and thereby reduce the amount of game...you will starve;
-start your adenture just after the last freeze and always wake up with this thought: winter is coming;
-because winter is coming your shelter is paramount, you will need to dry and store food (buried cache in clay pots),
-have a plan B so you can emerge from the wild smoothly, have income and a place to live.

Good luck!
4 weeks ago
Both Debi and Frank are right on. There are only two items I didn't notice in their posts:
-for convection flow to work you need atleast 18 inches or 45.72cm height difference (which you will get when you angle the collectors);
-many hot water systems using convection flow will not work if there is an air pocket trapped in the pipes/collectors connected to your tank.

Good luck!
1 month ago
To make sure I understand, you want to export biochar and wood vinegar from Malaysia to Japan?

One way to get clear answers on exports/imports is to talk to shipping companies. They won't have the answers themselves but they will give names of export and import companies that you can trust for a specific product to a specific country. If you live near a port, this is easy.

The hard way is to contact the Japanese government branch that handles trade and ask for the laws regarding your country and your product.....you'll get reams of information which you will have to interpet and hope you get it right.

1 month ago
One way to check if it is just the ground water level is to mark the water level and then empty six inches out by pump or bucket. Then mark the lower water level


Leave overnight or 24 hours with no new rain: if the water level rises past the lowest level, it's the ground water level.

If it stays at the lower level, you still aren't out of the woods yet...research your soil perculation rate.

The  first higher mark will indicate rates for you if you get movement in heights and also tell you if the ground level water is somewhere between the two marks.
1 month ago