An air conditioner using refrigerant-134a as the working fluid and operating on the ideal vapor-compression refrigeration cycle is to maintain the cold space at 20°C while operating its condenser at 1.2 MPa. Determine the (a) COP of the system when a temperature difference of 2°C is allowed between the evaporator and condenser. If the refrigerant leaves the compressor at 73°C at a rate of 4.85 kg/min, determine (b) the rate of heat rejection to the environment, in kW (c) the isentropic efficiency of the compressor, in % and (d) the compressor's power requirement, in kW. Disregard any heat loss in the expansion valve and compressor as well as the change in potential and kinetic energy of the refrigerant in any part of the cycle.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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PLEASE ANSWER THEM ALL ASAP COZ I NEED THEM ASAP PLEASE. THANK YOU. >>>Thermodynamics
An air conditioner using refrigerant-134a as the working fluid and operating on the ideal vapor-compression
refrigeration cycle is to maintain the cold space at 20°C while operating its condenser at 1.2 MPa. Determine
the (a) COP of the system when a temperature difference of 2°C is allowed between the evaporator and
condenser. If the refrigerant leaves the compressor at 73°C at a rate of 4.85 kg/min, determine (b) the rate of
heat rejection to the environment, in kW (c) the isentropic efficiency of the compressor, in % and (d) the
compressor's power requirement, in kW. Disregard any heat loss in the expansion valve and compressor as
well as the change in potential and kinetic energy of the refrigerant in any part of the cycle.
Final Answers:
Transcribed Image Text:An air conditioner using refrigerant-134a as the working fluid and operating on the ideal vapor-compression refrigeration cycle is to maintain the cold space at 20°C while operating its condenser at 1.2 MPa. Determine the (a) COP of the system when a temperature difference of 2°C is allowed between the evaporator and condenser. If the refrigerant leaves the compressor at 73°C at a rate of 4.85 kg/min, determine (b) the rate of heat rejection to the environment, in kW (c) the isentropic efficiency of the compressor, in % and (d) the compressor's power requirement, in kW. Disregard any heat loss in the expansion valve and compressor as well as the change in potential and kinetic energy of the refrigerant in any part of the cycle. Final Answers:
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