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Maximum Thermodynamic Efficiency

A company that produces pulsed gas heaters claims its efficiency is approximately 90%. If the engine operates between 250 degrees C and 25 degrees C, what is its maximum thermodynamic efficiency?

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I got 43%:

The Carnot cycle is considered to be the most efficient heta-engine cycle.

Its efficiency is given by:

e = ...

Solution Summary

Solution shows calculations to find the maximum thermodynamic efficiency of a gas heater.