Heat balancing problem in coal combustion

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 August 9, 2011, 13:34 Heat balancing problem in coal combustion #1 Senior Member   Bharath kumar Join Date: Apr 2009 Posts: 169 Rep Power: 10 Sponsored Links Hi to all, Am doing a coal combustion simulation and i got converged results.but my query is, can anybody give me a procedure or idea of how heat balancing is to be done in single inlet and single outlet model using CFX post. thanks in advance

 August 9, 2011, 18:30 #2 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 13,732 Rep Power: 106 A converged solution should conserve energy, so energy in equals energy out. Is that what you are asking?

 August 11, 2011, 09:56 #3 Senior Member   Bharath kumar Join Date: Apr 2009 Posts: 169 Rep Power: 10 yes ghorrocks what you said is right. 1) i have hot air and coal+air mixture in two different inlets and i get flue gas (co2,o2,N2,H2O and etc of different mass fraction) at single outlet. 2)In CFX post, i can get Temperature,Specific heat,Static enthalpy variables at various boundaries(Inlet,outlet,walls).But i can't get energy directly.So using this variables how i should do energy balance or is there any other way to do this? can you explain me.

 August 11, 2011, 19:20 #4 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 13,732 Rep Power: 106 You can get energy - just integrate the enthalpy over the boundary condition and you will get energy flows.

 August 12, 2011, 03:16 #5 Senior Member   Bharath kumar Join Date: Apr 2009 Posts: 169 Rep Power: 10 thanks ghorrocks.i will try that.

 August 16, 2011, 08:53 #6 Senior Member   Bharath kumar Join Date: Apr 2009 Posts: 169 Rep Power: 10 hi ghorrocks, i tried that what you had told. i got output unit (SI) m^4/s^2(energy flows).if i need (Watts(SI) or m^2/s^2) as output what i have to do? i need your reply. thanks in advance.

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