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A piston-cylinder contains 2 kg of refrigerant R-134a at temperature -20 degrees Celsius and a quality...

A piston-cylinder contains 2 kg of refrigerant R-134a at temperature -20 degrees Celsius and a quality of 20% is heated in device until it reaches a saturated mixture with quality 60%. a) Show process on a P-v and P-T diagram b) What is the pressure? c) What is the change in volume? d) What is the change in the internal energy? e) Redo the problem if the piston-cylinder assembly is replaced with a rigid container.

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