Refrigerant 134a inside an insulated piston-cylinder assembly initially occupies 0.017 m' at 0.6 MPa, 40°C. The refrigerant expands to a final state of pressure 300 kPa. The work done during this expansion process is claimed to be 5.512 kJ.

Refrigerant 134a inside an insulated piston-cylinder assembly initially occupies 0.017 m' at 0.6 MPa, 40°C. The refrigerant expands to a final state of pressure 300 kPa. The work done during this expansion process is claimed to be 5.512 kJ.

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

Refrigerant 134a inside an insulated piston-cylinder assembly initially occupies 0.017 m at 0.6
MPa, 40°C. The refrigerant expands to a final state of pressure 300 kPa. The work done during
this expansion process is claimed to be 5.512 kJ.
a)
b)
What is the mass of refrigerant? (kg)
Can the claimed amount of work be true?

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