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Solution Library
Calculate Heat Requirement For Heating Air
Question
Air is heated from 25°C to 150°C prior to entering a combustion furnace. The change in specific enthalpy associated with this transition is 3640 J/mol. The flow rate of air at the heater outlet is 1.25 m3/min and the air pressure at this point is 122 kPa absolute.
(a) Calculate the heat requirement in kW, assuming ideal gas behavior and that kinetic and potential energy changes from the heater inlet to the outlet are negligible.
(b) Would the value of ΔÄ–k [which was neglected in part (a)] be positive or negative, or would you need more information to be able to tell? If the latter, what additional information would be needed?
Summary
The question belongs to Chemical Engineering and it discusses about calculation of heat requirement in kW and the value of ΔÄ–k be positive or negative.
Total Word Count NA
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