[Stoves] History of clean Chinese stove development.

[Crispin Pemberton-Pigott]

Haha ha! That is pretty funny, Anil.

 

All fuels are dirty. It is their combustion that makes them clean. 

 

I get my hands dirty all the dealing with fuels. Especially coal and charcoal. Dirty face too. The cleanest things around is the stack emissions. 

 

Harold Annegarn has a great demonstration of clean combustion. 

Light a candle.

Pass a white tea cup saucer over the flame, traversing the candle in about 2 seconds. Not too fast, not too slow. 

Start off quite high above the flame, perhaps 200 mm where you know there is no influence from the flame. 

Lower it and looking each time by 30mm or so.

 

Look under the saucer each time. At some point, still well above the tip of the flame, a black sooty line will appear on the underside of the saucer. Where does it come from? How can a white candle with a clear flame cause soot to appear on a saucer well above the top of the flame? Why doesn’t the line appear when the candle is higher above it?

 

If the fuel dirty or not?

 

Regards

Crispin

 

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