HW problem A vapor compression cycle uses R-410a. The R-410a enters the compress
ID: 1859323 • Letter: H
Question
HW problem
A vapor compression cycle uses R-410a. The R-410a enters the compressor as saturated vapor at 0 degree F and leaves at 300 psia and 180 degree F. Estimate the compressor work in Btu/lb R-410a compressed. The R-410a leaving the compressor described in Question 6 enters a condenser and leaves as saturated liquid at 80 degree F. Estimate the heat rejected in the condenser in Btu/lb of R-410a. The saturated liquid leaving the condenser described in Question 7 is now throttled to 62.97 psia. Estimate the quality of the R-410a entering the evaporator (or cooler or chiller). The refrigeration cycle described in Questions 6, 7, and 8 is now used as a heat pump. Estimate the coefficient of performance of this cycle as a heat pump. When the Potaro river flows over the Kaieteur Falls in Guyana, the water falls freely 740 ft. Estimate the velocity (ft/s) of the water as it hits the rocks after the 740 ft fall.. If this kinetic energy is dissipated as heat, estimate the rise in temperature ( degree F) of the water.Explanation / Answer
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