please quickly.Thank you.Just part A Part a) and Part b) are separate questions to be solved independently.Part a) A vapor-compression refrigerator using R-134a is located in a 20°C room. Consider the cycle to be ideal, except that the compressor is neither adiabatic nor reversible. The mass flow rate ofR-134a in the cycle is 0.1 kg/s. Saturated vapor at -24°C enters the compressor, and R-134a exits the compressor at 40°C. Condenser pressure is 800 kPa, and the COP is measured and found as 2.i) Determine the power required by the compressor:kW.ii) Determine the heat transfer for the compressor:kW.kW/K.iii) Determine the rate of entropy generation in the compressor process:Part b) Air enters an adiabatic turbine at 11.3 MPa, 300 K, and exits at 3.75 MPa, 240 K. Use the enthalpy and entropy departure charts and table A-22For Air: R = 0.287 kl/kgK; Tcritical = 133 K; Peritical = 3.77 MPa

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Part a) and Part b) are separate questions to be solved independently. Part a) A vapor-compression refrigerator using R-134a is located in a 20°C room. Conside R-134a in the cycle is 0.1 kg/s. Saturated vapor at -24°C enters the compressor, and R-134 i) Determine the power required by the compressor: kW. ii) Determine the heat transfer for the compressor: kW. iii) Determine the rate of entropy generation in the compressor process:

Part a) and Part b) are separate questions to be solved independently. Part a) A vapor-compression refrigerator using R-134a is located in a 20°C room. Conside R-134a in the cycle is 0.1 kg/s. Saturated vapor at -24°C enters the compressor, and R-134 i) Determine the power required by the compressor: kW. ii) Determine the heat transfer for the compressor: kW. iii) Determine the rate of entropy generation in the compressor process:

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 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

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