A refrigeration cycle operating at steady state between hot and cold reservoirs at 298 K and 275 K, respectively, removes energy by heat transfer from the cold reservoir (the contents of the refrigerator) at a rate of 600 kW. (a) If the cycle’s coefficient of performance β = 4, determine the power input required, in kW. (b) Determine the minimum theoretical power required, in kW, for a refrigeration cycle operating between these two temperatures

To design a steam turbine to produce 12,000 hp power. a engineer comsiders using a steady state stean low st 1160fr and engineer considers using a steady state steam flow at 1160°r and 450 psia to drive this steam turbine. the exhaust of the steam is cooled by the lake (vacuum). heat losing to the surroundings is measured at a rate of 555.55 btu/s. (a) sketch the system with the given conditions. (b) neglecting kinetic and potential energy changes from inlet to exit, determine the volumetric flow rate of the steam at the inlet, (ft'/hr). must clearly show unit conversions at crtical terms.