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Type: E 1. A vapor-compression refrigeration cycle uses R-134a as its refrigerant. The R-134a enters the compressor as a saturated liquid at 200 kPa, and exits the condenser as a saturated liquid at 800 kPa. The rate of refrigeration of the cycle is to be 3.0 tons of refrigeration. Determine the coefficient of performance of the device as a refrigerator and the mass flow rate of R-134a needed for (a) an isentropic compressor, and (b) an isentropic compressor efficiency of 0.75.

Type: E 1. A vapor-compression refrigeration cycle uses R-134a as its refrigerant. The R-134a enters the compressor as a saturated liquid at 200 kPa, and exits the condenser as a saturated liquid at 800 kPa. The rate of refrigeration of the cycle is to be 3.0 tons of refrigeration. Determine the coefficient of performance of the device as a refrigerator and the mass flow rate of R-134a needed for (a) an isentropic compressor, and (b) an isentropic compressor efficiency of 0.75.

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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Type: E 1. A vapor-compression refrigeration cycle uses R-134a as its refrigerant. The R-134a enters the compressor as a saturated liquid at 200 kPa, and exits the condenser as a saturated liquid at 800 kPa. The rate of refrigeration of the cycle is to be 3.0 tons of refrigeration. Determine the coefficient of performance of the device as a refrigerator and the mass flow rate of R-134a needed for (a) an isentropic compressor, and (b) an isentropic compressor efficiency of 0.75.
Transcribed Image Text:Type: E 1. A vapor-compression refrigeration cycle uses R-134a as its refrigerant. The R-134a enters the compressor as a saturated liquid at 200 kPa, and exits the condenser as a saturated liquid at 800 kPa. The rate of refrigeration of the cycle is to be 3.0 tons of refrigeration. Determine the coefficient of performance of the device as a refrigerator and the mass flow rate of R-134a needed for (a) an isentropic compressor, and (b) an isentropic compressor efficiency of 0.75.
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