All High School Physics Resources
Example Question #1 : Understanding Heat Engines
A Carnot Cycle operates using a heat reservoir at a temperature of and a cold reservoir at a temperature of . What is the operating efficiency, , of this cycle, to the nearest percent?
The efficiency of a Carnot Cycle is defined by:
In this calculation, temperatures are given in Kelvin. Since Celsius and Kelvin exist in a one-to-one ratio, a conversion is unnecessary unless desired. We will perform the conversion, since most classes will advise it.
Using these values, we can calculate the efficiency:
Convert this value to a percentage: