The temperatures of source and sink of a Carnot engine are 300°C and 300K. Find the efficiency of the engine.

Solution

Temperature of source,
$straight T subscript 1 space equals space 300 degree straight C space equals space 573 straight K$
Temperature of sink,
$straight T subscript 2 space equals space 300 straight K$
The efficiency of Carnot engine is given by,
$straight eta space equals 1 minus straight T subscript 2 over straight T subscript 1 space space space equals 1 minus 300 over 573 space space space equals space 273 over 573 space space space equals 0.476$