[Stoves] Changing rate of pyrolysis front in TLUDs

[Crispin Pemberton-Pigott]

Dear Tom

I used his basic layout to make the downdraft coal stove in JHB in 2004. 
The significant advantage with it is that it can be refuelled, and for all 
intents and purposes, it is a gasifier.  Sealing it to make it burn the gas 
in an adjacent location is the main difference between a BLDD and the Vesto 
Coal Stove.

>Downdrafts and tall stacks remind me of Peter Verhaart's work at Eindhoven

Regards
Crispin