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Data for steady-state operation of a vapor-compression refrigeration cycle with Refrigerant 134a as the working fluid are given in the table below. State 1 is at the compressor inlet. The cooling capacity (i.e the rate at which heat is removed from the cooled space) is 4.6 tons. 1 ton of refrigeration is equivalent to 211 kJ/min. Ignoring heat transfer between the compressor and its surroundings, sketch the ?-? diagram of the cycle and determine a) the mass flow rate of the refrigerant, in kg/min. b) the isentropic compressor efficiency. c) the coefficient of performance. State ? (bar) ? (°C) ℎ (kJ/kg) ? (kJ/kg-K)

Data for steady-state operation of a vapor-compression refrigeration cycle with Refrigerant 134a as the working fluid are given in the table below. State 1 is at the compressor inlet. The cooling capacity (i.e the rate at which heat is removed from the cooled space) is 4.6 tons. 1 ton of refrigeration is equivalent to 211 kJ/min. Ignoring heat transfer between the compressor and its surroundings, sketch the ?-? diagram of the cycle and determine a) the mass flow rate of the refrigerant, in kg/min. b) the isentropic compressor efficiency. c) the coefficient of performance. State ? (bar) ? (°C) ℎ (kJ/kg) ? (kJ/kg-K)

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Data for steady-state operation of a vapor-compression refrigeration cycle with Refrigerant 134a as the
working fluid are given in the table below. State 1 is at the compressor inlet. The cooling capacity (i.e the
rate at which heat is removed from the cooled space) is 4.6 tons. 1 ton of refrigeration is equivalent to
211 kJ/min. Ignoring heat transfer between the compressor and its surroundings, sketch the ?-? diagram
of the cycle and determine
a) the mass flow rate of the refrigerant, in kg/min.
b) the isentropic compressor efficiency.
c) the coefficient of performance.
State ? (bar) ? (°C) ℎ (kJ/kg) ? (kJ/kg-K)



State 1 2 3 4 P (bar) 1.4 7 7 1.4 T (°C) -10 58.5 24 -18.8 h (kJ/kg) 243.4 295.13 82.90 82.90 s (kJ/kg-K) 0.9606 1.0135 0.3113 0.33011
Transcribed Image Text:State 1 2 3 4 P (bar) 1.4 7 7 1.4 T (°C) -10 58.5 24 -18.8 h (kJ/kg) 243.4 295.13 82.90 82.90 s (kJ/kg-K) 0.9606 1.0135 0.3113 0.33011
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