Gas liquefaction system

Abstract

A gas liquefaction system includes: multiple stages of heat exchangers that cool and liquefy raw material gas to generate liquefied gas by causing the raw material gas to exchange heat with a refrigerant; an expander that decreases a pressure and a temperature of the liquefied gas generated by the multiple stages of heat exchangers by performing adiabatic expansion on the liquefied gas; a magnetic refrigerator that further decreases the temperature of the liquefied gas whose pressure and temperature have been decreased by the expander; a liquefied gas tank that stores the liquefied gas; and a liquid feed line that connects between the magnetic refrigerator and the liquefied gas tank and through which the liquefied gas is fed from the magnetic refrigerator to the liquefied gas tank.

Dependencies are inferred from the claim text.