4. A fluid enters a machine at 170 m/s, 800 kPa, and with a specific volume of 0.3 m/kg. The radiation heat loss is 25 kJ/kg. The internal energy decreases by 495 kJ/kg. If the fluid leaves at 330 m/s, 138 kPa, and 0.95 m/kg, determine the work done by the fluid in k/kg.

4. A fluid enters a machine at 170 m/s, 800 kPa, and with a specific volume of 0.3 m/kg. The radiation heat loss is 25 kJ/kg. The internal energy decreases by 495 kJ/kg. If the fluid leaves at 330 m/s, 138 kPa, and 0.95 m/kg, determine the work done by the fluid in k/kg.

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 27RQ: How many Btu/h would be produced in a 12-kW electricheater?

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Question

4. A fluid enters a machine at 170 m/s, 800 kPa, and with a specific volume of 0.3
m2/kg. The radiation heat loss is 25 kJ/kg. The internal energy decreases by 495
kJ/kg. If the fluid leaves at 330 m/s, 138 kPa, and 0.95 m/kg, determine the work
done by the fluid in kJ/kg.

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