Steam enters a throttling valve as a saturated liquid with a pressure of 1 mpa. the steam is discharged at a pressure of 300 kpa. find: a)-the inlet temperature of the steam. b)-the exit temperature of the steam c)-the exit quality of the steam.

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0