[Stoves] Equipment required for testing stoves

[Alex English]

On 08/12/2012 12:25 AM, Crispin Pemberton-Pigott wrote:
> Dear Crispin,
>
> What was the diameter of the chamber?
>
30 cm.
>
> Do you have a good idea what the burn rate was?
>
I'll guess 7- 8kw, but that is an estimate based on assumptions. Sound 
familiar?
>
> I realise the calculation of the power output per unit area will be 
> difficult to get precisely but I'd like some idea. Operating at a low 
> level sets the low power limit for stove characterisation and the 
> determination of the Turn Down Ratio of a stove.
>
> I am thinking 'warming' power for long, low cooking.
>
> Then, for the same chamber, based on your experience what would the 
> maximum burn rate be? As the upper limit is constrained by draft 
> through the system the rate is a statement about /your/ system, but 
> still, what sort of controllability did you obtain for the power level?
>
Perhaps 12 kw.

For my test burner on natural draft the burn rate (or pyrolysis front 
downward movement rate) is 6-10cm/hr.  Higher if you can up the primary 
air. Josh should be able to tell us what that was for his forced air 
tests. I once pushed the BIG-TOP hard with a high pressure blower but I 
didn't record the rate. Sounded like a rocket though. At some point we 
fluidise the bed.

Alex
>
> Thanks
> Crispin
>
>
>
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