25. A tank contains 80 ft3 of air at a pressure of 350 psi. If the air is cooled until its pressure and temperature decrease to 200 psi and 70°F respectively, what is the decrease in internal energy?

25. A tank contains 80 ft3 of air at a pressure of 350 psi. If the air is cooled until its pressure and temperature decrease to 200 psi and 70°F respectively, what is the decrease in internal energy?

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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Question

25.A tank contains 80 ft³ of air at a pressure of 350 psi. If the air is cooled until its
pressure and temperature decrease to 200 psi and 70•F respectively, what is the
decrease in internal energy?

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