Heat engine and refrigerator. Consider a heat engine operating between temperatures Th and Tj. During each cycle with time At, work W is extracted, so Pout = W/At. (a) Assuming the processes are all reversible, what is the efficiency of this heat engine, n = Wout/Qn? (b) Now assume that the low temperature of the heat engine is lowered by a reversible refrigerator, such that the heat engine operates between Th and T. The refrigerator takes input power Pin = Win/At and operates between T and Ti, where T < TỊ. Draw an energy- entropy flow diagram. (c) Calculate the net efficiency (Wout - Win)/Qh. Is the efficiency of this system higher, lower, or the same as your answer for (a)?

Plot the Carnot efficiency of Heat engine at thermal power plant over temperature range of 400 - 750 degree celcius

An engineer receives a schematic fora reversible heat engine with three reservoirs at the temperatures shown to the right. The heat engine produces 1800 kW work as it pulls 3200 kW of heat from the 600K reservoir. The engineer wonders if the schematic is drawn correctly (in other words, are the arrows going the correct directions?) To answer this question, (a) calculate the heat interactions of the HE with the other two reservoirs. (b)If necessary, draw an updated diagram with the correct directionalities indicating the rates of heat transfer.

Please give the detailed solution. Mechanical -thermo