A compressor is used to compress refrigerant R-134a from a pressure of 200.0 kPa and a...

 

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A compressor is used to compress refrigerant R-134a from a pressure of 200.0 kPa and a temperature of -5.000°C (minus 5.000°C) to an outlet pressure of 1.400 MPa and an outlet temperature of 110.0°C. The refrigerant R-134a enters the compressor at a steady rate of 1.250 kg/s at a velocity of 75.00 m/s. The compressor is powered by an electrical motor with an electrical to mechanical efficiency of 85.0%. The electrical motor consumes 148.0 kW of electrical power. The compressor is surrounded by a cooling jacket (a heat exchanger) that water flows through. The water enters the cooling jacket at a pressure of 200.0 kPa and a temperature of 10.00°C and exits at a temperature of 40.00°C. i) ii) Determine the inlet volumetric flowrate of cooling water to the cooling jacket. (in L/min) Determine the heat transfer rate from the compressor to the cooling water. (in kW) Show the process on T-V and P-v diagrams with respect to the saturation curve and the critical point. A compressor is used to compress refrigerant R-134a from a pressure of 200.0 kPa and a temperature of -5.000°C (minus 5.000°C) to an outlet pressure of 1.400 MPa and an outlet temperature of 110.0°C. The refrigerant R-134a enters the compressor at a steady rate of 1.250 kg/s at a velocity of 75.00 m/s. The compressor is powered by an electrical motor with an electrical to mechanical efficiency of 85.0%. The electrical motor consumes 148.0 kW of electrical power. The compressor is surrounded by a cooling jacket (a heat exchanger) that water flows through. The water enters the cooling jacket at a pressure of 200.0 kPa and a temperature of 10.00°C and exits at a temperature of 40.00°C. i) ii) Determine the inlet volumetric flowrate of cooling water to the cooling jacket. (in L/min) Determine the heat transfer rate from the compressor to the cooling water. (in kW) Show the process on T-V and P-v diagrams with respect to the saturation curve and the critical point.

Answer rating: 100% (QA)

To determine the inlet volumetric flow rate of cooling water to the cooling jacket we can use the energy balance equation mwater Cpwater Tout Tin mref... View the full answer