Suppose that two heat engines are connected in series,
Chapter , Problem 88(choose chapter or problem)
Suppose that two heat engines are connected in series, such that the heat released by the first engine is used as the heat absorbed by the second engine, as shown in Figure 19-22. Suppose that each engine is an ideal reversible heat engine. Engine 1 operates between temperatures and and Engine 2 operates between and where Show that the net efficiency of the combination is given by (Note that this result means that two reversible heat engines operating in series are equivalent to one reversible heat engine operating between the hottest and coldest reservoirs.)
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