Discussion:
Efficiency and Heat Exchange by Reversible Heat Engines
Q: Two reversible heat engines X and Y are arranged in series. The engine X rejected heat directly to Y. Engine X receives 400 KJ of heat at 427 degrees centigrade from a high temperature source. Engine Y rejects heat to a sink at 7 degree centigrade. If the output of X is twice that of Y, find the efficiency of each engine, the heat rejected by engine X (i.e. Heat received by engine Y), and the heat rejected to the sink.