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The refrigerant R134a flows through an adiabatic compressor in stationary operation. The volume at the inlet...

The refrigerant R134a flows through an adiabatic compressor in stationary operation. The volume at the inlet is 500 liters / min. At the inlet, the refrigerant is at 0 ° C and 200kPa. At the outlet, the pressure is 1MPa. The compressor has an isentropic efficiency of 85%. The environment of the compressor is at 25 ° C and 100kPa.

a) Calculate the specific enthalpy at the compressor outlet (in kJ / kg). Draw a Ts diagram of the process showing the states and process curve of the saturation curve
b) What is the mass flow through the compressor in kg / s and the compressor power requirement in kW
c) Calculate the change of the specific exergy of the refrigerant between kJ / kg
d) Calculate the extrusion destruction rate of the compression process in kW and the compressor's 2-law efficiency

engineering   Mechanical-Engineering   
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Answer #1

ve Aetval Csrevercible) process is shoum by tne (-2. Isentropic eten ㄒ loo0 6 0 0 00833 m s W12-ニ0, ou833厂1000-201]ニ6,664 kw

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