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Know about Claude System of Air Liquefaction

 In the Claude system, energy is removed from the gas stream by allowing it to do some work in expander.



 The gas is first compressed to pressures of about 40 atm and then passed through the first heat exchanger. Approximately 80% of the gas is then diverted from the main stream, expanded through an expander, and reunited with the return stream below the second the heat exchanger. The stream to be liquified continues through the second and third heat exchangers, and is finally expanded through an expansion valve to the liquid receiver. the cold vapor from the liquid receiver is returned through the heat exchangers to cool the incoming gas.

The yield and specific work consumption may be computed by making the mass and energy balance as in Linde Hampson System. 

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