Engineering

Engineering, 11.07.2019 04:30, SuperWoman9172

Determine the entropy change of r-134a contained in a closed system as it changes phase from saturated vapor to saturated liquid when the pressure is o9 mpa and constant. is the entropy change positive or negative for this process? why?

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Engineering, 18.07.2019 20:30, imstupid77

Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure of 140 kpa. the refrigerant absorbs 180 kj of heat from the cooled space, which is maintained at -10°c, and leaves as saturated vapor at the same pressure. determine (a) the entropy change of the refrigerant, (b) the entropy change of the cooled space, and (c) the total entropy change for this process.

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Engineering, 20.07.2019 02:10, makaylahendrix8808

Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure of 140 kpa. the refrigerant absorbs 180 kj of heat from the cooled space, which is maintained at-10°c, and leaves as saturated vapor at the same pressure. determine (a) the entropy change of the refrigerant, (b) the entropy change of the cooled space, and (c) the total entropy change for this process.

Answers: 3

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Engineering, 20.11.2019 20:31, aliviadushane

Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid–vapor mixture at a pressure of 140 kpa. the refrigerant absorbs 180 kj of heat from the cooled space, which is maintained at -10oc, and leaves as saturated vapor at the same pressure. determine (a) the entropy change of the refrigerant, (b) the entropy change of the cooled space, and (c) the total entropy change for this process.

Answers: 3

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