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wood fired boiler combustion chamber shapes

wood fired boiler combustion chamber shapes

wood fired boiler combustion chamber shapes

(OP)
We are building (for fun and education) a wood fired hot water boiler. We are planning a brick lined fire box of about 4 feet by 4 feet by 8 feet long with forced air. I wondered if anyone had any thoughts on different shapes or air inlet locations that might make for a more efficient combustion chamber. This will burn chunks and logs rather than sawdust or pellets and will have a 4 pass heat exchanger for the exhaust gases. Also the water side will be open so we don't build pressure.  Any suggestions or tips would be great.  Thanks

RE: wood fired boiler combustion chamber shapes

I see that this is an old post, but will reply, hoping it sends you an e-mail, 4x4x8 appears to be quite huge ? doesn't it ?? Is this in ft. meters or what ? My son and I are trying a firebox design (downdraft). I don't know if the forum allows conversation(s) so here's my e-mail a31ford@mts.net Lets talk !

G.

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