Stirling Engine

The above left is an ideal alpha type Stirling engine and the above right is a pressure/volume graph of the idealized Stirling cycle. A Stirling engine is a heat engine operating by cyclic compression and expansion of air or other gas, the working fluid, at different temperature levels such that there is a net conversion of heat energy to mechanical work. Which of the following explanations is NOT correct?

a) The pressure of the gas at B is \(2P.\)

b) The temperature of the gas decreases in the process B \(\to\) C.

c) In the process C \(\to\) D, the released heat by the gas is the same as the work done on the gas.

d) The gas absorbs heat in the process A \(\to\) B \(\to\) C.


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