An inventor claims to have developed a heat engine that receives 700 kJ of heat from a source at 500 K and produces 300 I of net work. while rejecting the waste heat to a sink at 290 K. Is this reasonable claim?
The maximum heat efficiency of the engine is the Carnot efficiency;
Since efficiency is defined as;
Therefore it is impossible to have a work output greater than 294kJ and therefore the inventors claim is not reasonable.
Comments
Leave a comment