Dear Alex I forgot to mention that your thermal efficiency could be calculated from the figures on your combustion analyser.
If the CO2 Max was 18.2% then the CO2 level was 18.2/1.28 (Lambda) = 14.21 %. Using Siegert: CO2 14.21% CO 0.0013% Flue temp 530 C Ambient 22 C A1 constant = 0.680 A2 constant = 0.520 B constant = 0.007 α constant for CO heat loss = 0.69 Stack loss 27.91% Chemical loss 0.01% Total stack losses 27.92% Efficiency as a heater 100 - 27.92 = 72.08% I think the Testo 335 can calculate the efficiency. How close is this above to the reported value from the Testo? I am suspicious that the flue temp was not 530 where it left the room. If you can provide the actual figure where the heat left the envelope of the house I will recalculated it. It is probably in the low 80's. Regards Crispin -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Alex English Sent: Monday, March 12, 2012 5:12 AM To: Discussion of biomass cooking stoves Subject: [Stoves] Pasifier Video Dear Stovers, I have been using my latest version of the gravity powered 'Pasifier' in both wood pellet and chip fired modes for the last month. Still learning but I'm running out of winter and therefore the need. Check it out at; http://www.youtube.com/watch?v=mWP15Eek4Xo&feature=youtu.be <http://www.youtube.com/watch?v=mWP15Eek4Xo&feature=youtu.be> Alex _______________________________________________ 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://www.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://www.bioenergylists.org/
