Refrigerant 134a is compressed with no heat transfer in a piston–cylinder assembly from 30 lbf/in.2, 20°F to 160 lbf/in.2 The mass of refrigerant is 0.04 lb. For the refrigerant as the system, W = 0.56 Btu. Kinetic and potential energy effects are negligible. Determine the final temperature, in °F.

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
Chapter2: Matter And Energy
Section: Chapter Questions
Problem 29RQ: If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the...
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Refrigerant 134a is compressed with no heat transfer in a piston–cylinder assembly from 30 lbf/in.2, 20°F to 160 lbf/in.2 The mass of refrigerant is 0.04 lb. For the refrigerant as the system, = 0.56 Btu. Kinetic and potential energy effects

are negligible. Determine the final temperature, in °F.

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