An ammonia ice plant operates between a condenser temperature of 35 °C and an evaporator temperature of - 15 °C. Assuming simple saturation cycle, using only tables of properties for ammonia, determine; a. The capacity of the refrigeration plant, b. The mass flow rate of refrigerant, c. The discharge temperature, d. The compressor cylinder diameter and stroke if its volumetric efficiency is ny= 0.65, rpm N=1200 and stroke/bore ratio L/D = 12, e. The horsepower of the compressor motor if the adiabatic efficiency of the compressor Na=0.85 and mechanical efficiency nm=0.95, and f. The theoretical and actual COP.

An ammonia ice plant operates between a condenser temperature of 35 °C and an evaporator temperature of - 15 °C. Assuming simple saturation cycle, using only tables of properties for ammonia, determine; a. The capacity of the refrigeration plant, b. The mass flow rate of refrigerant, c. The discharge temperature, d. The compressor cylinder diameter and stroke if its volumetric efficiency is ny= 0.65, rpm N=1200 and stroke/bore ratio L/D = 12, e. The horsepower of the compressor motor if the adiabatic efficiency of the compressor Na=0.85 and mechanical efficiency nm=0.95, and f. The theoretical and actual COP.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter3: Refrigeration And Refrigerants

Section: Chapter Questions

Problem 2RQ: What are the approximate temperature ranges tor low-, medium-, and high-temperature refrigeration...

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