Its measured on an "as received basis".....its 'Dry Ash Free' measurement is 13,095 btu/lb....AFT is 1320 deg Clsayre wrote:Unhippy, the BTU's of your coal are a bit down vs. anthracite, but your 4.7% ash is a big plus. Off the top of my head, that's half to perhaps less than half the ash of typical anthracite.
Is that 8,460 BTU/Lb. measured on a "dry basis"? 30+% moisture would be the concern here. Your effective BTU's may be well less than 8,460 if the measure is for dry. It means burning loads more coal, so on a real world basis, your ash to BTU's ratio is probably about the same as for anthracite.
How many people on here are running underfeed stokers?...i think we are in the minority as most of them seem to be flatbed's of one variety or another....which might have something to do with the lack of fire holding skite stories.StokerDon wrote: That's interesting, but I've never read about anyone else on the forum holding a fire for 12 hours. Maybe they do and they just don't write about it.
I saw your thread about going to re-lit the fire 24 hours later and being surprised that it was still lit! That is amazing to!
-Don
We might need our own sub-forum for underfeeds only if the word gets out, to prevent stoker rage when a 'flatbedder' loses their fire after the power goes out for an hour and then reads on here about someone being able to hold a fire for 12 or 24 hrs
Callum