Reference no: EM13630884

Draw a complete schematic diagram (show arrows, symbols & numeric values for each W & & Q & ). Consider the steady operation of a refrigeration "package" for a shipping container (on a train, truck or ship). The package is self-contained and is fueled by a tank of propane. The unit is composed of an internal-combustion engine that drives an R134a refrigeration cycle. The engine produces 10 kW of shaft power with a thermal efficiency of 20% when operating with a maximum temperature of 1367 K and cooled by the 288 K atmosphere. The refrigeration cycle has a COP of 2.5 when cooling the contents of the shipping container at 244 K and rejecting waste heat into the 288 K atmosphere. Determine the cooling capacity of the device and the actual COP of the combined-cycle package = useful effect/expensive input. (Note that the 10 kW of power produced is entirely absorbed to drive the refrigerator so the external work is zero. The thermal efficiency definition is based on the energy available from the propane fuel.) Calculate the steady rate of entropy production, s& (kJ/K/s), by the power unit & by the refrigeration unit. Entropy production is not a good thing. Find the amount of unnecessary or lost power = TATM * s& (kW).