An installation and method for storing liquefied gas, comprising a plurality of separate storage tanks each configured to contain liquefied gas, comprising a cooling circuit provided with a refrigeration device, a withdrawal pipe and a plurality of first injection pipes towards each of the tanks in order to cool the withdrawn fluid flow, the tanks comprising a degassing line, the installation comprising a set of controlled valves situated at least in the cooling circuit, wherein the first tank contains liquid and at least one other tank is empty, containing essentially boil-off gas, that is to say containing little or no liquid, wherein there is cooling of the fluid contained in the first tank, re-injection into the first tank, injection of liquid cooled by the refrigeration device into at least one other empty tank and transfer of boil-off gas generated in the or the other tanks to the first tank

A vapor pressure regulation system includes a vessel including a vessel wall that defines an enclosure, and a temperature adjustment mechanism coupled to the vessel. A heat transfer between the temperature adjustment mechanism and the vessel is adjusted based on at least a vapor pressure within the vessel to facilitate regulating the vapor pressure within the vessel.

Disclosed is a method for reducing the natural evaporation rate of an LNG storage tank. The method for reducing the natural evaporation rate of an LNG storage tank comprises the steps of: manufacturing an LNG storage tank including a primary insulation layer and a secondary insulation layer; connecting one end of a second vacuum hose to the secondary insulation layer; connecting the other end of the second vacuum hose to a vacuum pump; and actuating the vacuum pump so as to lower the internal pressure of the secondary insulation layer. The method enables the inside of the secondary insulation layer to be a vacuum, and thus lowers the moisture content of plywood included in the secondary insulation layer.

The present invention relates to a liquefied gas treatment system in which a nitrogen control unit controls a content of nitrogen in a boil-off gas or a flash gas when a ratio of a nitrogen component of the flash gas is equal to or greater than a preset value. The efficiency of a boil-off gas compressor can be improved and the system can be stabilized by means of the nitrogen control unit.

A vapor pressure regulation system includes a vessel including a vessel wall that defines an enclosure, and a temperature adjustment mechanism coupled to the vessel. A heat transfer between the temperature adjustment mechanism and the vessel is adjusted based on at least a vapor pressure within the vessel to facilitate regulating the vapor pressure within the vessel.

A vapor pressure regulation system includes a vessel including a vessel wall that defines an enclosure, and a temperature adjustment mechanism coupled to the vessel. A heat transfer between the temperature adjustment mechanism and the vessel is adjusted based on at least a vapor pressure within the vessel to facilitate regulating the vapor pressure within the vessel.

A system for supplying gas to at least one gas-consuming appliance equipping a ship, the supply system includes at least one gas supply line for supplying gas to the at least one gas consuming appliance, the gas supply line being configured to be traversed by gas taken in the liquid state from a tank and subjected to a pressure lower than a pressure of the gas in a headspace of the tank, a first compression member configured to compress the gas from the gas supply line for supplying gas to the at least one gas-consuming appliance, a second compression member, characterized in that the first compression member and the second compression member alternately compress gas in the gaseous state from the gas supply line and gas taken in the gaseous state from the headspace of the tank.

A system for supplying gas to at least one gas-consuming appliance equipping a ship, the supply system includes at least one gas supply line for supplying gas to the at least one gas consuming appliance, the gas supply line being configured to be traversed by gas taken in the liquid state from a tank and subjected to a pressure lower than a pressure of the gas in a headspace of the tank, a first compression member configured to compress the gas from the gas supply line for supplying gas to the at least one gas-consuming appliance, a second compression member, characterized in that the first compression member and the second compression member alternately compress gas in the gaseous state from the gas supply line and gas taken in the gaseous state from the headspace of the tank.