Question: A heat engine operates between a temperature T + and the ambient environment at temperature 298K. How large must T + be for the engine

A heat engine operates between a temperature T₊ and the ambient environment at temperature 298K. How large must T₊ be for the engine to have a possible efficiency of 90%? Can you find some materials that have melting points above this temperature, out of which you might build such an engine?

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The 2nd Law requires T T T so T T 1 for T 298 K and 09 we find T 2980 K Common metals ... View full answer

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