Michael Richards

Fox James wrote:Well there are rocket stoves and there are ROCKET stoves!
That one is not insulated, not designed to run for several hours every day and is pretty small … so yes the stainless should last quite well.
However, stainless will deteriorate, the process  is  known as intergranular corrosion, this corrosion results from heating stainless between 550C and 850C.
This causes chromium to precipitate from the stainless steel and reduces the ability for the passivation layer to regenerate. (I dont really know what that means but that is what is says on Google)
Also stainless is very prone to expand and contract when heated and cooled and that is one of the main reasons it is not used very often for stoves.
I have tried using it for pizza oven doors but it warps really badly.

I would imagine it to hold up quite well. There are various grades of stainless as you likely know. My guess is it would outlive the fabricator hence rendering untrue to "not use metal" in your fabrication of your burn tunnel. Make it bigger if required IMO.  

I watched this guys build using stainless steel for his burn box and riser. Appears to work well. Since stainless has a melt temp over 2500 degrees F, I can't imagine any steel degradation occurring, can you?    

Hmmm, seems to me that's the add I saw posted. Has it now been withdrawn?

Beau Davidson wrote:

paul wheaton wrote:

Michael Richards wrote:

paul wheaton wrote:

Michael Richards wrote:What works for "97.3%" of folks doesn't work for me, ...can you help? The graphics shown have never been seen on my end despite being "logged in". (Which in itself is a hassle since the site doesn't allow my password log-in, ....topic for another tech assist request some other time)

Going to "My Stuff" doesn't work either. What am I missing?

Michael,

If you click on this link, does it work?

https://permies.com/f/484/gmc-kickstarter-support

Nope. FYI: I have also noticed my debit card was not withdrawn from. I assume the $1.00 donation level still get to watch the Master Garden course by Helen somehow?

I went to kickstarter and plugged in your email address.  Zero matches.

But, your account here on permies says you supported.  

Wacky.

Michael, to clarify, what do you see when you click this url: https://permies.com/f/484/gmc-kickstarter-support?

Everything but the video I was told I would receive. How about a link with the entire video of Helen's presentation. I don't see it anywhere.

paul wheaton wrote:

Michael Richards wrote:What works for "97.3%" of folks doesn't work for me, ...can you help? The graphics shown have never been seen on my end despite being "logged in". (Which in itself is a hassle since the site doesn't allow my password log-in, ....topic for another tech assist request some other time)

Going to "My Stuff" doesn't work either. What am I missing?

Michael,

If you click on this link, does it work?

https://permies.com/f/484/gmc-kickstarter-support

To many links at that page to say for sure. Got any others?

paul wheaton wrote:

Michael Richards wrote:What works for "97.3%" of folks doesn't work for me, ...can you help? The graphics shown have never been seen on my end despite being "logged in". (Which in itself is a hassle since the site doesn't allow my password log-in, ....topic for another tech assist request some other time)

Going to "My Stuff" doesn't work either. What am I missing?

Michael,

If you click on this link, does it work?

https://permies.com/f/484/gmc-kickstarter-support

Nope. FYI: I have also noticed my debit card was not withdrawn from. I assume the $1.00 donation level still get to watch the Master Garden course by Helen somehow?

Tom Subject: Max Size Heater?
 You do not need to split the heat flow in the bench.  Your greenhouse is tiny a standard 6" rmh (load area 3',  barrel 2', 18ft out n back in bench, total 23ft) just fits.  It sounds like you need more basic understanding of the way a rocket mass heater works.   See Paul's page. https://richsoil.com/rocket-stove-mass-heater.jsp

I WAS planning on 2 ducts to more evenly heat the air. What is "rmh"?  I watched most of the video you suggested. I don't need the mass surrounding ducting because it will provide instant heat when needed more readily, despite your saying I don't need that. I may come up with something later to store heat it's just currently not in my planning.  

I was toying with the idea of using thick cedar boards and whatever to insulate all the walls all around. My chainsaw mill should be churning out planks soon.

S Benji
Total Sarface Area = 2(lw + lh + wh)
SA = 2(30*15 + 30*8 + 15*
SA = 1620 sqft
Heat Loss = U-value x SA x delta T= 1 x 1620sqft x (70F-20F) = 81,000BTU/hr  (2MBTU/day or 310lbs/day or 1/10th of a cord of wood per day)

1cord of wood is around 20MBTU, So you will go through 3cord of wood per month.
Do you plan on insulating your floor and north wall?

How do you plan on feeding the 310lbs/day of wood to your rocket mass heater? Will you do 24 burn session per day (13lbs of wood), on the hour every hour. Or will you only do 6 burn session per day @ 52lbs of wood.

So technically even a 6inch tube will work. But you can do a 10inch or 12inch if you want to.  

Thanks for all your math! It seems like your figures are not compensating for the reduced heat load once my planned 9 wicking beds have warmed up. Still, again thanks, I was thinking of doing some insulating, now I know for sure it's going to be required.

What works for "97.3%" of folks doesn't work for me, ...can you help? I don't have a 2nd or 3rd email!

Going to "My Stuff" doesn't work either. What am I missing?

Southern MO so I think it's called zone 6.

Since the burn tunnel can get hot enough to damage metal, I am considering using fire brick to the point the air stream has cooled enough to not damage metal ducting. From that point I plan to T off in 2 directions.  I am of the opinion heat will transfer more quickly from that then a cob coated duct of sort. Some small low side of ducting (..to keep smoke from escaping) "diffusers" of sort will heat the air quicker IMO.

I don't have a drawing, or know how to make one, so it's in my mind as to how I plan to proceed.

List,

I am wondering what the largest burn area/tunnel has ever been built and functioned properly? Or how large do I need?

Lumber is plentiful. Heat is for 15 x 30 x 8 Johny's style x mill thick plastic roof green house.

I envision using metal ducting T'ing off the entrance point after sufficient cool down has occurred. (Should be safe to do, correct? )