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Thermodynamic efficiency

Thermodynamic efficiency (e) is defined as:

e \equiv \frac{W}{Q}

where

W is the absolute value of the work done in one thermodynamic cycle

Q is the absolute value of the change in heat done in one cycle

For heat engines, Sadi Carnot derived efficiency as a function of the temperature of its hot and cold reservoirs:

e \equiv \frac{T_H - T_C}{T_H}

Science Fair Project Encyclopedia Contents Page
10-26-2009 08:16:03
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