[Stoves] Traditonal Charcola Making Process / retort

[Tom Miles]

Jeff,

Fuel in, gas out. The rest is math. There's a coefficient for specific heat.


By heat rating I meant power in kW or Btuh. In the US it's measured in two
ways 1) heat release, or Btu HHV of the fuel in, and heat out, Btu or kW
out. 

Tom 

-----Original Message-----
From: stoves-bounces at listserv.repp.org
[mailto:stoves-bounces at listserv.repp.org] On Behalf Of Jeff Davis
Sent: Sunday, July 01, 2007 8:24 PM
To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] Traditonal Charcola Making Process / retort

Hi Tom and All,

I'm home today so I have some time! I've been a bad employee and have been 
taking Sundays off.

Tom wrote:
> So, what yields have you had with the gas-of-fire: kg fuel in ->kg char
out
> + (gas temp x specific heat x gas flow)?


I don't have a good clean out door for the char so I'm not too sure how 
accurate my measurements will be. But with repeat runs precision might show 
up. In other words it is not easy for me to completely remove all the char 
for a test run.

kg fuel: OK, should not be a problem to measure how much fuel I put in.

Gas temp: I should be able to find something to measure this temp.

Gas flow: Thats what I want to build next!!!! Orifice plate and a
manometer!!!

Specific heat: You got me here. How can I measure that?????



> What heat rating would you give your gas-of-fire in fuel consumed or heat
> out?

What is a heat rating. With the proper fan I can get steel to glow cherry
red.


I have much better luck producing charcoal with the Gas-of-Fire (stratified 
gasifier) than I do with Mr. Charcoal (large t-lud). Plus all the control 
over the flame that I need.


Sure is nice typing an e-mail when your not up against the clock (on break
or 
lunch).



I do need to run these test!,

Jeff

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