A turbine takes in steam at 127 °C and dumps heat into a river at 27 °C. What is the highest efficiency any engine could reach between these?

PhysicsEasyHigh School (11–12)Heat & Thermodynamics › Heat Engines, the Second Law and Entropy

A turbine takes in steam at $127\ ^\circ\text{C}$ and dumps heat into a river at $27\ ^\circ\text{C}$ . What is the highest efficiency any engine could reach between these?

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← The efficiency of a heat engine that takes in heat Qh, gives out Qc and does work W is A Carnot engine with its cold sink at 300 K has an efficiency of 25%. To what temperature must its hot source be raised for an efficiency of 40%? →

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