Problem

A throttling valve in a refrigerator receives saturated liquid R-134a at 800 kPa, and exha...

A throttling valve in a refrigerator receives saturated liquid R-134a at 800 kPa, and exhausts the R-134a as a saturated mixture at 180 kPa.

(a) Assuming no changes in kinetic energy of the R-134a, determine the quality of the exiting mixture.


(b) For the same inlet conditions, use your throttling device model and plot the exit quality of the R-134a as the exit pressure is varied between 100 kPa and 700 kPa.

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