In the vapor-compession cycle a throttling device is used almost universally to reduce the pressure of...

Transcribed Image Text:

In the vapor-compession cycle a throttling device is used almost universally to reduce the pressure of the liquid refrigerant. a) Determine the percent saving in net work of the cycle per kilogram of refrigerant if an expansion engine could be used to expand saturated liguit refrigerant 22 isentropically from 35°C to the evaporator temperature of 0°C. Assume that compression is isentropic from saturated vapor at 0°C to a condenser pressure corresponding to 35°C. b)Calculate the increase in refrigerating effect in kilojoules per kilogram resulting from use of the expansion engine. In the vapor-compession cycle a throttling device is used almost universally to reduce the pressure of the liquid refrigerant. a) Determine the percent saving in net work of the cycle per kilogram of refrigerant if an expansion engine could be used to expand saturated liguit refrigerant 22 isentropically from 35°C to the evaporator temperature of 0°C. Assume that compression is isentropic from saturated vapor at 0°C to a condenser pressure corresponding to 35°C. b)Calculate the increase in refrigerating effect in kilojoules per kilogram resulting from use of the expansion engine.

Answer rating: 100% (QA)

Missing Information Refrigerant properties Specifically the enthalpy values at the various state points are required for accurate calculations Please ... View the full answer