# Carnot Efficiency

Written by Jerry Ratzlaff on . Posted in Dimensionless Numbers

Carnot efficiency, abbreviated as $$n_c$$, a dimensionless number, is the theroetical maximum efficiency of any heat engine depending only on the temperatures it operates between.

## Carnot efficiency formula

$$\large{ n_c = 1 - \frac{ T_c }{ T_h } }$$

$$\large{ n_c = \frac{ T_h \;-\; T_c }{ T_h } \;100 }$$

Symbol English Metric
$$\large{ n_c }$$ = Carnot efficiency   $$\large{dimensionless}$$
$$\large{ T_c }$$ = absolute temperature of cold source $$\large{F}$$ $$\large{K}$$
$$\large{ T_h }$$ = absolute temperature of hot source  $$\large{F}$$ $$\large{K}$$