temperature -20°C. Determine the condition of refrigerant at the end of the expansion ( outlet of capillary tube) process. 6. An ammonia refrigeration system operates in a simple saturation vapour...

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Extracted text: temperature -20°C. Determine the condition of refrigerant at the end of the expansion ( outlet of capillary tube) process. 6. An ammonia refrigeration system operates in a simple saturation vapour compression cycle to produce ice. The average temperature of condenser and evaporator are 35°C and -10°C, respectively. The plant produces 12 tons of ice everyday using available water at 30°C. The ice produced is at -5°C. Determine the following: (a) cooling capacity (refrigerating effect) of the plant in kW. (b) mass flow rate of refrigerant. (c) temperature of ammonia vapour at the outlet of compressor. (d) the compressor cylinder diameter and stroke if its volumetric efficiency is 70%, speed = 1500 rpm and L/D = 1.15. (e ) theoretical power requirement of compressor. (f) theoretical COP.