What would be the efficiency of a Carnot engine operating with TH = TC? What would be the efficiency if TC = 0 K and TH were any temperature above 0 K? Interpret your answers.
Solution 13DQ Step 1: The efficiency of a heat engine is, T HT C = TH ----------------(1) When T = T , the efficiency will be zero. H C This means the engine is unable to convert heat into work.