An engine operates in a steady state process The rate of hea

An engine operates in a steady state process. The rate of heat addition (by combusting fuel) is 10 MW. The net power produced by the engine is 3 MW. What is the rate of heat rejection from the engine? 13 MW 10 MW 7 MW 3 MW 0 MW cannot be determined

Solution

Sum of All power losses = 10 - 3 = 7 MW

But in this 7 MW, we don\'t know how much of it is heat rejection from the engine, how much went into overcoming friction, how much went into cooling the engine, etc. Hence based on the given data we cannot determine the heat rejection.

Hence,option f is correct.