Question

A heat engine is a device which converts heat energy into work.

1. What is the working substance in an ideal heat engine.

2. A Carnot engine is working between in melting point and steam point. What is its efficiency?

Answer 1

1. Ideal gas.

2. T₂ = 0°C = 273K

T₁ = 100°C = 373K

Efficiency η = I – \(\frac{T_2}{T_1}\) = I−\(\frac{273}{373}\)

η = 0.27

η = 27%.