The chiller system operates based on the vapour compression refrigeration cycle with a single stage compression....

 

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The chiller system operates based on the vapour compression refrigeration cycle with a single stage compression. The isentropic efficiency of the compressor is assumed at 80%. The refrigerant exit evaporator and condenser can be assumed as saturated. Select a commercial refrigerant (other than R134a), i. ii. iv. V. Provide a list of important properties for the refrigerant. (C01) Assign the suitable operating pressures of the chiller system based on all known operating conditions. Explain the choice of pressures. (C01) Calculate the maximum possible Coefficient of Performance of the chiller system based on the selected pressures. (CO2) Determine a range of suitable refrigerant mass feed rate (in kg/s) to obtain a practical design (2<COP<4). Discuss the effect of refrigerant feed rate to the COP profile. (CO3) At a specific refrigerant mass feed rate, increase the condenser pressure and evaluate its effect on the COP. (CO3) The chiller system operates based on the vapour compression refrigeration cycle with a single stage compression. The isentropic efficiency of the compressor is assumed at 80%. The refrigerant exit evaporator and condenser can be assumed as saturated. Select a commercial refrigerant (other than R134a), i. ii. iv. V. Provide a list of important properties for the refrigerant. (C01) Assign the suitable operating pressures of the chiller system based on all known operating conditions. Explain the choice of pressures. (C01) Calculate the maximum possible Coefficient of Performance of the chiller system based on the selected pressures. (CO2) Determine a range of suitable refrigerant mass feed rate (in kg/s) to obtain a practical design (2<COP<4). Discuss the effect of refrigerant feed rate to the COP profile. (CO3) At a specific refrigerant mass feed rate, increase the condenser pressure and evaluate its effect on the COP. (CO3)