A heat engine uses a diatomic gas in a Brayton cycle. What is the engine's thermal efficiency if the gas volume is halved during the adiabatic compression?
The engine's thermal efficiency during adiabatic compression,
Any thermal cycle's efficiency is expressed as
We know that for an adiabatic process
From the first law, we may express pressure in terms of temperature.
As a result, we have the following for an adiabatic process:
Let us now calculate a temperature ratio based on the volume ratio:
We get that
The Efficiency will be,
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