Coal Stoves needed 3

["john" <jmdavies@xsinet.co.za>]

Greetings,

Following up on previous posts.

The electricity story in the townships has a sting in the tail. I do not
have exact details available, but the residents ( including the cities ) all
receive the first 40 kWh free of charge, any consumption above this is
naturally loaded to pay for this, Our electricity is cheap by international
standards, but the people try and keep within the free quota. When I
mentioned an electric fan to a small group of above average, educated
people, I received a look of horror.  I think that the majority have a long
way to go before accepting such a concept.

Crispin quite estimated that a stove height of 60 cm might be too little for
coal burning. A 15 cm diameter coal bed needed about another 20 cm added to
achieve gassification of the residual carbon after the initial flaming of
the volatiles. While the smaller stove ran well on 10 m coal particles the
larger one did not breathe well with this size. It required coal of about 15
mm size. The results with the larger size are very promising.  I am told
that a commercially produced stove pipe is available in 1 meter lengths of
this diameter.
This will solve the problem of acquiring 15 cm dia tin cans which are not
very common here.

Regards,
John Davies.





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