METHOD FOR COOLING A LIQUEFIED GAS

The invention concerns a method for cooling of a liquefied gas (8) stored in the inner space of a sealed and thermally insulated vessel (2) in a state of two-phase liquid-vapor equilibrium, said method involving the steps of: - drawing a stream of gas in vapor phase into the inner space of the vessel (2); said step of drawing a stream of gas in vapor phase generating in the inner space of the vessel a pressure P l of less than the atmospheric pressure such that vaporization of the liquefied gas is promoted and the liquefied gas stored in the vessel is placed in a state of two-phase liquid-vapor equilibrium in which the liquefied gas has a temperature less than the liquid-vapor equilibrium temperature of said liquefied gas at atmospheric pressure; and - guiding the drawn stream of gas in vapor phase toward a circuit for use of gas in vapor phase (13). The invention also concems an installation for storage and cooling of a liquefied gas. Figure 1