Solved: A coal from Texas which has an ultimate analysis
Chapter 15, Problem 1558(choose chapter or problem)
A coal from Texas which has an ultimate analysis (by mass) as 39.25 percent C, 6.93 percent H2, 41.11 percent O2, 0.72 percent N2, 0.79 percent S, and 11.20 percent ash (noncombustibles) is burned steadily with 40 percent excess air in a power plant boiler. The coal and air enter this boiler at standard conditions and the products of combustion in the smokestack are at 1278C. Calculate the heat transfer, in kJ/kg fuel, in this boiler. Include the effect of the sulfur in the energy analysis by noting that sulfur dioxide has an enthalpy of formation of 2297,100 kJ/kmol and an average specific heat at constant pressure of cp 5 41.7 kJ/kmol K.
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