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LNG liquefaction stage Natural gas temperature changes

2017-04-29View Original

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In the LNG liquefaction stage, the gas exits the cryogenic tank at a temperature of -160 degrees and a pressure of 4.6 MPA; after passing through the step valve, the pressure drops to 0.085 MPA while the temperature remains at -158.5 degrees. Why does the temperature rise after passing through the step valve?

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