Estimated or calculated heating power of a batch box rocket stove

Good evening all,


Does there exist any literature on how to calculate the heating power of a batch box rocket stove, based on the dimensions of the rocket stove core and the physical properties of the fuel used?

Thanks

Ivo Staelens

Hi Ivo,

As far as I know, there isn't literature about calculating heating power of the batch box rocket. But when you think an estimate is acceptable I can have a stab at it.
We know now the burn time of an original design 6" batch box is something between 60 and 80 minutes, including coaling stage. It can burn about 6 kg of fuel in that time, harvest estimate of every kg is 4kWh. That's 24 kWh in, say, 70 minutes on average. That would be 20.57 kWh, minus chimney losses etc we get 18kWh. This is a very conservative guess, but it is a good indication what heating power it can deliver.

I'm glad to see you using 4 kW/kg (6000 BTU/lb) rather than the silly 10,000  BTU/lb that I see quoted around here...