Q1: Refrigerant-134a is the working fluid in an ideal compression refrigeration cycle. The refrigerant leaves the evaporator -20°C and has a condenser pressure of 0.9 MPa. The mass flow rate is 3 kg/min. Find COPR, COPR, Carnot for same Tmax and Tmin , and the tons of refrigeration.

Q1: Refrigerant-134a is the working fluid in an ideal compression refrigeration cycle. The refrigerant leaves the evaporator -20°C and has a condenser pressure of 0.9 MPa. The mass flow rate is 3 kg/min. Find COPR, COPR, Carnot for same Tmax and Tmin , and the tons of refrigeration.

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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Question

Q1: Refrigerant-134a is the working fluid in an ideal compression refrigeration cycle.
The refrigerant leaves the evaporator -20°C and has a condenser pressure of 0.9 MPa.
The mass flow rate is 3 kg/min. Find COPR, COPR, Carnot for same Tmax and Tmin , and the
tons of refrigeration.

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