Q.7 The condensing and evaporating temperatures of a vapor compression cycle using R134a are 40°C and -5°C respectively. The vapor leaving the evaporator is heated to 5°C in a heat exchanger using the saturated liquid leaving the condenser. The refrigerant flow rate is 0.3 kgs. The compression process is isentropic. Calculate (i) the heat absorption rate in the evaporator, (ii) the work input to the compressor, and (iii) the COP.
Q.7 The condensing and evaporating temperatures of a vapor compression cycle using R134a are 40°C and -5°C respectively. The vapor leaving the evaporator is heated to 5°C in a heat exchanger using the saturated liquid leaving the condenser. The refrigerant flow rate is 0.3 kgs. The compression process is isentropic. Calculate (i) the heat absorption rate in the evaporator, (ii) the work input to the compressor, and (iii) the COP.
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter28: Special Refrigeration Applications
Section: Chapter Questions
Problem 19RQ: Two methods used to power refrigeration compressors on a ship are _____and ____.
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![Q.7
compression cycle using R134a are 40°C and -5°C respectively. The
vapor leaving the evaporator is heated to 5°C in a heat exchanger using
the saturated liquid leaving the condenser. The refrigerant flow rate is
0.3 kgs. The compression process is isentropic. Calculate (i) the
heat absorption ratc in the cvaporator, (ii) the work input to the
compressor, and (iii) the COP.
|Answers: (i) 47 kW, (ii) 9.41 kW, (iii 5
The condensing and cvaporating temperatures of a vapor](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7b33d64f-e5fd-4910-a74b-41b011615c4b%2F70ada9b2-92a3-4492-bf32-9c2992b3d9ce%2Fffpmhhs_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q.7
compression cycle using R134a are 40°C and -5°C respectively. The
vapor leaving the evaporator is heated to 5°C in a heat exchanger using
the saturated liquid leaving the condenser. The refrigerant flow rate is
0.3 kgs. The compression process is isentropic. Calculate (i) the
heat absorption ratc in the cvaporator, (ii) the work input to the
compressor, and (iii) the COP.
|Answers: (i) 47 kW, (ii) 9.41 kW, (iii 5
The condensing and cvaporating temperatures of a vapor
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