<div dir="ltr"><div dir="ltr">Excuse the delay in responding. For some reason my Energy list emails were going to Spam. See my responses below.<div><br></div><div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>Francesco</div><div><br></div><div><div><font face="Comic Sans MS" size="2">We know more about the stars overhead than the soil underfoot.</font></div><div><font face="Comic Sans MS" size="2">Leonardo Da Vinci</font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Oct 30, 2019 at 4:02 PM Kelpie Wilson <<a href="mailto:kelpiew@gmail.com">kelpiew@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hello all, <div>Sorry for late response, I get the digest and could not figure out how to respond to individual messages. </div><div><br></div><div>Anyway, thanks Crispin, for the suggestion of a rocket mass heater with down draft heat exchanger. That's a great idea. TLUDs tend to draft too fast and you lose a lot of heat up the stack. That's why I don't use a stack on my 55 gal TLUD. I just use another barrel on top to make a plenum burner - it has slots around the top for the flue gas to escape. Burns super clean. See one here, burning hemp stalks: <a href="https://photos.app.goo.gl/WR8PPCuztQ3w6JuZ6" target="_blank">https://photos.app.goo.gl/WR8PPCuztQ3w6JuZ6</a></div><div><br></div><div>Andrew and Gordon - TLUDs are not desirable for this application because what we have is cord wood and we don't want to chip or pelletize it (even though your TLUD BBQ that I have is very nice, Gordon, it uses pellets). The cordwood is mostly being used for biochar production in flame cap kilns, but as long as we are doing all that feedstock prep, it makes sense to use some just for fuel. I don't really care about making biochar in this case. </div><div><br></div><div>Francesco - yes I remember meeting Lowell at the Permaculture Convergence last month - very nice what he is doing and looks like he is using wood chunks in that TLUD? Or is it wood chips? Maybe a TLUD that used long 24" pieces of split cordwood (2-3" thick), arranged vertically, would work. Is anyone using this kind of small size cord wood in a TLUD? Seems better suited to a rocket stove.<font color="#0000ff"><b> Lowell is using wood chunks. That is what he started with and is comfortable using and is a waste bi-product of his carpentry business. He is able to add fuel during the burn while it is in fan assist mode. He fills the combustion chamber and turns off the fan once the water has reached 190 F. It then maintains temperature above 160 F which is what he needs for one hour.</b></font></div><div><br></div><div>The dairy needs 30 gallons of 150 F hot water twice a day for cleanup after milking, plus more every few days for pasteurizing. I recommend they install a solar pre-heating system so a quick hot fire started at the beginning of milking and fed during the hour-long milking process would get that water up to temperature in a reasonable amount of time. <font color="#0000ff"><b>Lowell starts with water at ~100 F from his hot water heater. He heats the 44 gallons in the 55 gallon drum to the required 190 F in approx 1 hour before adding the straw to the barrel which raises the water level to the top due to displacement. The timing seems about the same for the dairy operation.</b></font></div><div><br></div><div>Francesco - did you meet a guy at Permies who does hydronic and solar heating systems? I had a long talk with him around the biochar bonfire Saturday night, but I don't remember his name. I'd like to contact him. <font color="#0000ff"><b>I do not recall his name either.</b></font></div><div><br></div><div>Rolf, thank you for the link to your retorts - those look like high-quality units.</div><div><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><i>Ms.Kelpie Wilson<br><a href="http://www.wilsonbiochar.com" target="_blank">Wilson Biochar Associates</a></i></div><div dir="ltr">Email: <a href="mailto:kelpiew@gmail.com" target="_blank">kelpiew@gmail.com</a><br>Oregon home office: 541-592-3083<br>Mobile: 541-218-9890<br>Skype: kelpie.wilson</div></div></div></div></div></div></div></div></div></div></div></div>
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