AUTOMATIC COOLING DOWN SYSTEM AND METHOD FOR LNG CARGO TANK

摘要

The present invention relates to an automatic cooling system and method for an LNG storage tank capable of automatically controlling the flow rate of LNG according to the internal temperature of the LNG storage tank. The present invention provides a cooling down system for an LNG storage tank provided on an LNG carrier, comprising: a spray nozzle part provided above the LNG storage tank and spraying LNG into the LNG storage tank; A spray line connected to the spray nozzle unit; And a control unit for controlling a flow rate of LNG supplied to the spray nozzle unit, wherein a spray control valve unit for adjusting a flow rate of LNG supplied to the LNG storage tank through the spray nozzle unit is provided on the spray line, and the control unit May control the spray control valve unit according to the temperature of the LNG storage tank.