An air conditioner using refrigerant-134a as the working fluid is used to keep the temperature of a room at 23°C by giving heat to the external environment at 37°C. The heat gain of the house from the walls and windows is 250 kJ/min; 900 W heat is emitted into the room from the computer, TV and lamps. The refrigerant enters the compressor with a flow rate of 100 L/min in the form of saturated vapor at 400 kPa pressure and leaves the compressor at 70°C at 1200 kPa pressure. a) Draw the cycle by showing the elements of the cycle. b) the actual COP value, c) The highest COP value, d) The smallest refrigerant can have for the same compressor inlet and outlet conditions. Calculate the volumetric flow.
An air conditioner using refrigerant-134a as the working fluid is used to keep the temperature of a room at 23°C by giving heat to the external environment at 37°C. The heat gain of the house from the walls and windows is 250 kJ/min; 900 W heat is emitted into the room from the computer, TV and lamps. The refrigerant enters the compressor with a flow rate of 100 L/min in the form of saturated vapor at 400 kPa pressure and leaves the compressor at 70°C at 1200 kPa pressure. a) Draw the cycle by showing the elements of the cycle. b) the actual COP value, c) The highest COP value, d) The smallest refrigerant can have for the same compressor inlet and outlet conditions. Calculate the volumetric flow.
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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An air conditioner using refrigerant-134a as the working fluid is used to keep the temperature of a room at 23°C by giving heat to the external environment at 37°C. The heat gain of the house from the walls and windows is 250 kJ/min; 900 W heat is emitted into the room from the computer, TV and lamps. The refrigerant enters the compressor with a flow rate of 100 L/min in the form of saturated vapor at 400 kPa pressure and leaves the compressor at 70°C at 1200 kPa pressure.
a) Draw the cycle by showing the elements of the cycle.
b) the actual COP value,
c) The highest COP value,
d) The smallest refrigerant can have for the same compressor inlet and outlet conditions.
Calculate the volumetric flow.
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