An ice making process is to produce 7 tonnes of ice (solid water) per hour at...

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An ice making process is to produce 7 tonnes of ice (solid water) per hour at a temperature of -10.0C from water at a temperature of 20.0C. Assume the ice making process occurs at an atmospheric pressure of 101.325 kPa. An analysis of the refrigeration plant that services the ice-making process is to be conducted. The refrigeration system operates on refrigerant R-134a and can be modelled as an ideal vapor compression cycle (IVCC). The refrigeration system has a suction pressure of 60.0 kPa and a discharge pressure of 1.40 MPa. The refrigeration system rejects heat to the ambient air, which is at 25.0C. i) Determine the rate of heat absorption required to be delivered by the refrigeration system for the ice-making process (in kW). ii) Draw an equipment diagram for the problem showing all energy interactions. iii) Plot the refrigeration cycle on T-s and P-h diagrams with respect to the saturation curves showing all energy interactions. iv) Find the mass flow rate of refrigerant in the refrigeration cycle (in kg/s). v) Determine the power required to operate the refrigeration system (in kW). vi) Determine the power required if the refrigeration system were modelled as an AVCC with the same suction and discharge pressures, however with 16.95C of superheating and 12.4C of subcooling and an isentropic compressor efficiency of 75%. vii) If an ideal Carnot refrigerator with constant suction and discharge pressures were used for the refrigeration process, determine the power consumption of the Carnot refrigerator (in kW). An ice making process is to produce 7 tonnes of ice (solid water) per hour at a temperature of -10.0C from water at a temperature of 20.0C. Assume the ice making process occurs at an atmospheric pressure of 101.325 kPa. An analysis of the refrigeration plant that services the ice-making process is to be conducted. The refrigeration system operates on refrigerant R-134a and can be modelled as an ideal vapor compression cycle (IVCC). The refrigeration system has a suction pressure of 60.0 kPa and a discharge pressure of 1.40 MPa. The refrigeration system rejects heat to the ambient air, which is at 25.0C. i) Determine the rate of heat absorption required to be delivered by the refrigeration system for the ice-making process (in kW). ii) Draw an equipment diagram for the problem showing all energy interactions. iii) Plot the refrigeration cycle on T-s and P-h diagrams with respect to the saturation curves showing all energy interactions. iv) Find the mass flow rate of refrigerant in the refrigeration cycle (in kg/s). v) Determine the power required to operate the refrigeration system (in kW). vi) Determine the power required if the refrigeration system were modelled as an AVCC with the same suction and discharge pressures, however with 16.95C of superheating and 12.4C of subcooling and an isentropic compressor efficiency of 75%. vii) If an ideal Carnot refrigerator with constant suction and discharge pressures were used for the refrigeration process, determine the power consumption of the Carnot refrigerator (in kW).