Question

Imagine you use Nitrogen as your gas. If you have the cold side as cold as you can without liquefying it (78 K), and run the hot side at room temperature (300 K) what is the efficiency of a Stirling engine

Answer 1

Answer:

The efficiency of a Stirling engine is 74%

Explanation:

Given:

Temperature of gas when it is cold $T_{1} = 78$ K

Temperature of gas when it is hot $T_{2} = 300$ K

The efficiency of a stirling engine,

  $\eta =1 - \frac{T_{1} }{T_{2} }$

  $\eta = 1- \frac{78}{300}$

  $\eta = 1-0.26$

  $\eta = 0.74$

∴ $\eta = 74 \%$

Therefore, the efficiency of a Stirling engine is 74%