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...

please quickly. Thank you. Just part A

Extracted text: 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 of R-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-22 For Air: R = 0.287 kl/kgK; Tcritical = 133 K; Peritical = 3.77 MPa