Heat for my garage

Re: Heat for my garage

PostBy: Lightning On: Sun Apr 14, 2013 8:53 am

Yeah I agree with that. A hydro carbon consists of carbon and hydrogen. Then when burned its united with oxygen to form carbon dioxide and water. So unless you are burning coal that is saturated with water, there isn't a problem with condensation. I have seen condensation after loading wet coal but after it evaporates, no more condensation.
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

Re: Heat for my garage

PostBy: 331camaro On: Mon Apr 15, 2013 5:03 am

good to know. learn something new everyday.
331camaro
 
Stoker Coal Boiler: Keystoker k6
Coal Size/Type: rice

Re: Heat for my garage

PostBy: Pacowy On: Mon Apr 15, 2013 11:03 am

I'm going to have to disagree with the premise that water released during combustion isn't an issue with anthracite. It certainly is true that anthracite has a high proportion of carbon, but it also has a significant amount of hydrogen, which forms water during combustion. An approximate chemical formula for anthracite of C240H90O4NS is shown at page 3 of http://www.purdue.edu/discoverypark/ene ... -Oct08.pdf . On an "as received" basis, anthracite also typically has a moisture content of up to 10 percent or more - see "Specifications" tab at http://jeddocoal.com/. That's why there are different ratings for "as received" vs. "dry basis". I wouldn't assume that moisture issues can be assumed to be minor with a coal boiler. If anything, the combination of moisture and fly ash tends to be pretty corrosive, and a good reason to maintain a low limit that inhibits condensation.

Mike
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

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Re: Heat for my garage

PostBy: Rob R. On: Mon Apr 15, 2013 2:42 pm

I am not a chemist, but I can confirm that running my Efm at 140 degrees for a few weeks produced strange deposits inside the firebox.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Other Heating: Dad's 1953 EFM Highboy

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