Why Is My Calculation of Carnot Engine Efficiency Incorrect?

obxer22 · Jul 1, 2012

Homework Statement

A Carnot engine operates between 230°C and 120°C, absorbing 6.30*10^4 J per cycle at the higher temperature.

What is the efficiency of the engine?

eff = 1 - (T_cold/T_hot)

Using this equation, I get 47.83 percent, which the system is telling me is incorrect. Can anybody offer a solution to this? Thanks.

obxer22 · Jul 1, 2012

i was not using kelvin, so i got the answer