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Coal needed to produce 100000 BTU/s

  1. Apr 7, 2012 #1
    how much coal is required to produce 100000 BTU/s in a typical house?

    I have been looking and looking with no leads on it

    need help please
     
  2. jcsd
  3. Apr 7, 2012 #2

    russ_watters

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    Staff: Mentor

    BTU/s? That would be an awful lot. 100,000 BTU/hr would be a healthy heating rate for a medium-large house in a cool climate. For the coal required, wiki says coal has an energy density of 24 MJ/kg, which is 10,340 BTU/lb, so 100,000 BTU/hr would take about 10 lb/hr.
    http://en.wikipedia.org/wiki/Energy_density#Common_energy_densities
     
  4. Apr 8, 2012 #3
    I am a plumbing, heating, and cooling contractor in Maine. 100,000 btu/hr is normal for a house up here with a -10 design temp. We use 12,000 btu's per lb for bulk or bag coal. It has always worked for us.
     
  5. Apr 16, 2012 #4

    OldEngr63

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    Gold Member

    The specific heat of coal varies all over the map. Really good Pennsylvania anthracite (virtually unavailable now) was as high as 17,000 btu/lb, while some Texas brown coal is as low as 2500 btu/lb. Be sure to get the correct specific heat for the coal you plan to use.
     
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