Re: Questions on CO monitoring

["*.English" <english@adan.kingston.net>]

> People who are actually making and measuring stoves: What do YOU think
> about need for real-time measurements and quick response times? Do you
> think the burning is steady enough that 10-minute response is good
> enough?

Tami,
Where as spot measurement has been acceptable for oil and gas furnaces,
real time measurement is necessary for monitoring wood and charcoal stoves. In the 
absence of intervention O2 and CO2  levels will generally vary slowly ,  but CO can 
change astonishingly fast. This is especially true if conditions are close to optimal 
where CO levels can virtually cliff by 2 or 3 orders of magnitude. 

Ultimately comparisons are done on a total emissions basis on multiple test runs, 
where reduced sampling frequencies could suffice. Ten minutes still seems much to 
long for CO, but might be ok for CO2 and O2. However for a stove where fuel is added 
during the burn or air supply adjustments are frequently made, the sampling rate would 
need to be faster generally. 



Alex English
Alex English
RR 2 Odessa, Ontario
Canada K0H 2H0
613-386-1927


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