AC/ pump analysis System 2 tons operating steadily to maintain 60 F inside. Temperature outside: 30 F Assume 10 degree temp difference between the refrigerant R-134a and the two thermal reservoirs with which the refrigerant exchanges heat. COP = 9.0 Determine: compressor efficiency (%), condenser pressure (psia), evaporator pressure (psia), mass flow rate of R-134a (lb/sec)
AC/ pump analysis System 2 tons operating steadily to maintain 60 F inside. Temperature outside: 30 F Assume 10 degree temp difference between the refrigerant R-134a and the two thermal reservoirs with which the refrigerant exchanges heat. COP = 9.0 Determine: compressor efficiency (%), condenser pressure (psia), evaporator pressure (psia), mass flow rate of R-134a (lb/sec)
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter8: Natural Convection
Section: Chapter Questions
Problem 8.46P
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AC/ pump analysis
System 2 tons operating steadily to maintain 60 F inside.
Temperature outside: 30 F
Assume 10 degree temp difference between the refrigerant R-134a and the two thermal reservoirs with which the refrigerant exchanges heat.
COP = 9.0
Determine: compressor efficiency (%), condenser pressure (psia), evaporator pressure (psia), mass flow rate of R-134a (lb/sec)
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