P=19 Moist air goes into air-conditioning unit at a degree-30 C and 70% relative humidity, and it is cooled to 20-degree C and 20% relative humidity at a constant pressure of 1.01325 bar. The mass flow rate of dry air is mda=63 kg/s The unit applies refrigerant R-134a as the cooling fluid that enters inside the tubes of the cooling coil at 3.6 bar with a quality of 0.2 and leaves as a saturated vapor at the same pressure of 3.6 bar. Use the psychometric chart to determine: a) Mass flow rate of condensed water in kg/s b) The heat transfer rate from the air to the cooling coil in kW (Use the psychometric chart) c) The mass flow rate of R-134a that is needed in kg/s

P=19 Moist air goes into air-conditioning unit at a degree-30 C and 70% relative humidity, and it is cooled to 20-degree C and 20% relative humidity at a constant pressure of 1.01325 bar. The mass flow rate of dry air is mda=63 kg/s The unit applies refrigerant R-134a as the cooling fluid that enters inside the tubes of the cooling coil at 3.6 bar with a quality of 0.2 and leaves as a saturated vapor at the same pressure of 3.6 bar. Use the psychometric chart to determine: a) Mass flow rate of condensed water in kg/s b) The heat transfer rate from the air to the cooling coil in kW (Use the psychometric chart) c) The mass flow rate of R-134a that is needed in kg/s

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

P=19 Moist air goes into air-conditioning unit at a
degree-30 C and 70% relative humidity, and it is cooled
to 20-degree C and 20% relative humidity at a constant
pressure of 1.01325 bar. The mass flow rate of dry air is
mda=63 kg/s The unit applies refrigerant R-134a as the
cooling fluid that enters inside the tubes of the cooling
coil at 3.6 bar with a quality of 0.2 and leaves as a
saturated vapor at the same pressure of 3.6 bar. Use
the psychometric chart to determine:
a)
Mass flow rate of condensed water in kg/s
b)
The heat transfer rate from the air to the cooling
coil in kW (Use the psychometric chart)
c)
The mass flow rate of R-134a that is needed in
kg/s

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