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Consider a Carnot Refrigeration cycle with a working fluid of R-134a operating between temperatures of -10oC and 20oC. The compressor in the cycle requires 500 W of power.
a) What is the maximum coefficient of performance?
b) What is the rate of heat that is removed from the refrigerated space?
c) What is the rate of heat that is rejected from the cycle?
d) The R-134a enters the evaporator as a saturated mixture with a quality of 0.1. If the R-134a leaves the evaporator as a saturated mixture with a quality of 0.9 what is the flow rate?
Calculate the force required in direct extrusion of 1100-O aluminum from a diameter of 6 in. to 2 in. Assume that the redundant work is 30% of the ideal work of deformation, and the friction work is 25% of the total work of deformation.
consider a large rain water tank for a remote farmhouse. the farmhouse occupants are constantly concerned with the
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