[Stoves] Good enough stove?

[Crispin Pemberton-Pigott]

Dear Friends

 

Retesting a stove is always a good idea to see if there was a) any equipment
problem and b) to confirm unusual findings. 

 

Another good one:

 

PM2.5 3.5 mg/MJ delivered

CO 3.8 g/MJ delivered

Energy efficiency 33.4% (based on raw fuel consumed per replication,
reusable fuel carried forward to the next replication)

WBT efficiency 49.5% (based on energy from the fuel burned, crediting char)

 

This highlights the difference between reporting the energy efficiency and
the thermal efficiency, respectively. If a tier of performance is rating the
thermal efficiency (heat transfer efficiency x combustion efficiency)
instead of the energy efficiency, there is a factor or 1.5 difference
between the numbers. Which would you finance: a reduction in the energy
drawn from the forest? Or a reduction in the energy released from the fuel
consumed?

 

This is a subject worthy of discussion. The timing is also good as the ISO
is working on this right now.

 

Regards

Crispin

 

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