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

Question

Quizplus · Accepted Answer

The Carnot efficiency equation is 1 - (Tc / Th), where Tc is the temperature of the cold reservoir and Th is the temperature of the hot reservoir. Converting the temperatures to Kelvin, we get a range of 298K to 523K. Plugging these values into the Carnot efficiency equation results in a maximum efficiency of 43%. Therefore, the pulsed gas heater's claimed efficiency of 90% cannot be matched by the engine.

A Company That Produces Pulsed Gas Heaters Claims Their Efficiency °\degree°

A Company That Produces Pulsed Gas Heaters Claims Their Efficiency $\degree$