Air enters the evaporator section of a window air conditioner at 100 kPa and 27C with a volume flow rate of 6 m3/min. The refrigerant-134a at 120 kPa with a quality of 0.3 enters the evaporator at a rate of 2 kg/min and leaves as saturated vapor at the same pressure. Determine the exit temperature of the air and the rate of entropy generation for this process, assuming (a) the outer surfaces of the air conditioner are insulated and (b) heat is transferred to the evaporator of the air conditioner from the surrounding medium at 32C at a rate of 30 kJ/min.
Air enters the evaporator section of a window air conditioner at 100 kPa and 27C with a volume flow rate of 6 m3/min. The refrigerant-134a at 120 kPa with a quality of 0.3 enters the evaporator at a rate of 2 kg/min and leaves as saturated vapor at the same pressure. Determine the exit temperature of the air and the rate of entropy generation for this process, assuming (a) the outer surfaces of the air conditioner are insulated and (b) heat is transferred to the evaporator of the air conditioner from the surrounding medium at 32C at a rate of 30 kJ/min.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
Air enters the evaporator section of a window air
conditioner at 100 kPa and 27C with a volume flow rate
of 6 m3/min. The refrigerant-134a at 120 kPa with a quality
of 0.3 enters the evaporator at a rate of 2 kg/min and
leaves as saturated vapor at the same pressure. Determine
the exit temperature of the air and the rate of entropy generation
for this process, assuming (a) the outer surfaces of
the air conditioner are insulated and (b) heat is transferred
to the evaporator of the air conditioner from the surrounding
medium at 32C at a rate of 30 kJ/min.
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