compression refrigeration system with two evaporators and a direct contact heat exchanger. Saturated vapor ammonia from evaporator 1 enters compressor 1 at 12 lbf/in2 and exits the compressor at 54 lbf/in2. Evaporator 2 operates at 54 lbf/in2, with saturated vapor exiting at state 8. The condenser pressure is 200 lbf/in2, and saturated liquid refrigerant exits the condenser. Each compressor stage has an isentropic efficiency of 80%. The refrigeration capacity of each evaporator is shown on the figure. 71 Expansion Avale Save for Later Expansion A valve Comer Evaporator OF Compres -10km Step 1 Determine the temperature, in "F, of the refrigerant in evaporator 2. Exponator Q-3 Direct contact heat exchanger Attempts: 0 of 4 used Submit A
compression refrigeration system with two evaporators and a direct contact heat exchanger. Saturated vapor ammonia from evaporator 1 enters compressor 1 at 12 lbf/in2 and exits the compressor at 54 lbf/in2. Evaporator 2 operates at 54 lbf/in2, with saturated vapor exiting at state 8. The condenser pressure is 200 lbf/in2, and saturated liquid refrigerant exits the condenser. Each compressor stage has an isentropic efficiency of 80%. The refrigeration capacity of each evaporator is shown on the figure. 71 Expansion Avale Save for Later Expansion A valve Comer Evaporator OF Compres -10km Step 1 Determine the temperature, in "F, of the refrigerant in evaporator 2. Exponator Q-3 Direct contact heat exchanger Attempts: 0 of 4 used Submit A
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
Chapter28: Special Refrigeration Applications
Section: Chapter Questions
Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?
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