you design a custom refrigeration system using 1,1,2-tetrafluoroethane (R-134a) as refrigerant. You design your ideal compression-based refrigeration cycle to operate between 2 bar and 9 bar. Before entering the ideal butterfly valve (delta H = 0), the refrigerant is a saturated liquid. Before entering the compressor, the refrigerant is saturated vapor. In fact, in isentropic operation, the refrigerant which leaves the compressor is also saturated vapor. The operation of the compressor and the evaporator is isobaric. Assuming a mass flow rate of 1.5 kg / s, determine the compressor efficiency required to achieve a coefficient of performance of 6.96. What is ?? ̇ et ?? ̇ to this performance.
you design a custom refrigeration system using 1,1,2-tetrafluoroethane (R-134a) as refrigerant. You design your ideal compression-based refrigeration cycle to operate between 2 bar and 9 bar. Before entering the ideal butterfly valve (delta H = 0), the refrigerant is a saturated liquid. Before entering the compressor, the refrigerant is saturated vapor. In fact, in isentropic operation, the refrigerant which leaves the compressor is also saturated vapor. The operation of the compressor and the evaporator is isobaric. Assuming a mass flow rate of 1.5 kg / s, determine the compressor efficiency required to achieve a coefficient of performance of 6.96. What is ?? ̇ et ?? ̇ to this performance.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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you design a custom refrigeration system using 1,1,2-tetrafluoroethane (R-134a) as refrigerant.
You design your ideal compression-based refrigeration cycle to operate between 2 bar and 9 bar. Before entering
the ideal butterfly valve (delta H = 0), the refrigerant is a saturated liquid. Before entering the compressor, the
refrigerant is saturated vapor. In fact, in isentropic operation, the refrigerant which leaves the compressor is also
saturated vapor. The operation of the compressor and the evaporator is isobaric. Assuming a mass flow rate of
1.5 kg / s, determine the compressor efficiency required to achieve a coefficient of performance of 6.96. What
is ?? ̇ et ?? ̇ to this performance.
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