An open tank contains water at the bottom for a depth of 6 ft and 3 ft of oil ( 0.75) above water. water is discharged from the tank through a 4-inch diameter orifice located 2 ft above the bottom. assuming steady liquid levels and no losses, determine the volume flow rate through the orifice.

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