[Stoves] Pasifier Video

[Crispin Pemberton-Pigott]

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: stoves-bounces at lists.bioenergylists.org
[mailto:stoves-bounces at lists.bioenergylists.org] 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

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