Question

What are the four processes of the Carnot cycle? Sketch the Carnot cycle (a) on T-s (temperature - entropy) and P-V (pressure - volume) diagrams and calculate the thermal efficiency of the Carnot cycle if it operates between 800°C and 15 °C

Answer 1

`\eta = 0.7315`

Step-by-step explanation:

Carnot cycle

Carnot cycle have four process

1. Iso thermal expansion

2.Reversible adiabatic expansion

3. Iso thermal compression

4.Reversible adiabatic compression

This is ideal cycle for all work producing devices.All devices have efficiency less than Carnot cycle. Because in Carnot cycle all process is reversible process.

Efficiency of Carnot cycle given as

`\eta =1-(T_1)/(T_2)`

But temperature must be in Kelvin

So

`\eta =1-(288)/(1073)`

`\eta = 0.7315`