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Air at 14.7 psia, 50oF, and 60% relative humidity is first heated to 72 o F in a heating section and then humidified by introducing water vapor. The air leaves the humidifying section at 75oF and 55% relative humidity.
Determine
a) The amount of steam added to the air in lbmH2O/lbm dry air
b) The amount of heat transfer to the air in the heating section in Btu/lbm dry air.
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