Paal. Cc list 1. I don't recall seeing the word "horizontal" with Peko Pe before. Can you explain or point me to a site?
2. I agree about the temperatures needed for various cooking tasks. How are you accomplishing this wide range with the Peko Pe? Ron On Jun 9, 2013, at 9:58 AM, "Paal Wendelbo" <[email protected]> wrote: > Stovers > Crispin is right, the best insulation is air, and arranged the right way it > will give some preheating to the intake off secondary air at the same time as > it will prevent destroying the metal. By natural draft you will have a yellow > charcoal with a temperature of about 900˚C and by forced air you will have > white charcoal of a temperature of about 1000 ˚C, the temperature blacksmiths > need for forcing and welding steel. > But what is convenient temperature for cooking? It is definitely not 1000 ˚C. > On top of charcoal it can sometimes be too hot, on open fire from wood > sometimes too low. I have found that my horizontal TLUD ND PP stove works > best with a temperature about 700 ˚C for cooking, about 450 ˚C for simmering > and around 200 ˚C for baking bread. And to obtain that, I need no insulation > anywhere in the stove. > Regards Paal W > > -----Opprinnelig melding----- From: [email protected] > Sent: Sunday, June 09, 2013 2:26 PM > To: Discussion of biomass cooking stoves > Subject: Re: [Stoves] Insulation and stove life > > [Default] On Sat, 8 Jun 2013 14:10:58 -0700,Bob Tingleff > <[email protected]> wrote: > >> Belonio's TLUD design calls for an insulated gasifier reactor, with the >> inner cylinder being 20 gauge stainless, though Paul O's version is not >> insulated. And Rocket stoves are insulated. So I'm surprised to see the >> comments below pass without any discussion. I wonder if Belonio's rice husk >> gasifier stoves have longevity problems. > > Insulation is necessary to reduce heat loss, so we are not saying don > not use insulation. What we are saying is if the insulation is added > to the "cool" side of a metal surface in the stove then it can cause > the metal work to get to a temperature at which it fails, normally by > oxidation. > > On our high pressure pyrolysis unit we had blocks of ceramic > insulation inside a steel containment but it was necessary to allow > for cooling of the outer skin because stray hot gas could get past the > insulation joints to heat the steel. > > Steel seems to survive the temperature in a TLUD quite well, but this > is only a temperature of around 600C. If the TLUD pyrolysis front > reaches the primary air inlet and the char starts burning in updraught > mode the temperature rapidly reaches over 1100C and steel fails > quickly. > > AJH > > _______________________________________________ > Stoves mailing list > > to Send a Message to the list, use the email address > [email protected] > > to UNSUBSCRIBE or Change your List Settings use the web page > http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org > > for more Biomass Cooking Stoves, News and Information see our web site: > http://stoves.bioenergylists.org/ > > > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2013.0.2904 / Virus Database: 3199/6394 - Release Date: 06/08/13 > > _______________________________________________ > Stoves mailing list > > to Send a Message to the list, use the email address > [email protected] > > to UNSUBSCRIBE or Change your List Settings use the web page > http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org > > for more Biomass Cooking Stoves, News and Information see our web site: > http://stoves.bioenergylists.org/ > _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://stoves.bioenergylists.org/
