# Maximum efficiency = Carnot cycle

1. Nov 25, 2007

### LTP

Is it possible to show that the maximum efficiency for a heat engine is given by
$$\eta = 1 - \frac{T_c}{T_h}$$
where $$T_c$$ is the temperature of the cold sink and $$T_c$$ is the temperature of the warm sink?

In other words: How do I prove that a engine run by a Carnot cycle is the most efficient engine?

2. Nov 25, 2007

### Shooting Star

3. Mar 24, 2011

### questbook

can we take the efficiency of carnot cycle as 100%
or
can we say that the efficiency of carnot cycle is 100%????

4. Mar 24, 2011

### Staff: Mentor

No, we most certainly can't.

5. Mar 24, 2011