Abstract: A liquefied gas treatment system includes: a liquefied gas supply line connected from a liquefied gas storing tank to a source of demand, a pump provided on the liquefied gas supply line, and configured to pressurize liquefied gas discharged from the liquefied gas storing tank, a heat exchanger provided on the liquefied gas supply line between the source of demand and the pump, and configured to heat exchange the liquefied gas supplied from the pump with heat transfer media, a media heater configured to heat the heat transfer media, a media circulation line connected from the media heater to the heat exchanger, and a controller configured to change a flow rate of the heat transfer media flowing into the media heater or calories supplied to the heat transfer media by the media heater on the basis of a flow rate of the liquefied gas supplied to the heat exchanger

Abstract: The system heats glycol water using steam generated by a boiler and heating LNG using the glycol water, thereby increasing efficiently the LNG to temperature required for an engine. In addition, the system senses LNG flowing to a glycol tank using a pressure sensor, etc. when the LNG flows to the glycol tank due to pressure difference between a fuel supplying line and a glycol circulation line generated according as a heat exchanger is broken down, and outputs the flowed LNG to the outside. As a result, the glycol circulation line may be returned to original state and stability of the system may be enhanced.

Abstract: A ship comprises: a hull; an engine for propelling the hull; a harmful substance reducing device for reducing harmful substances included in exhaust gas discharged from the engine; and a preheating device for the harmful substance reducing device, preliminarily heating the harmful substance reducing device when the hull is located at an emission control area (ECA) preliminary entry point close to an ECA in which the emission of the harmful substances is restricted. The ship comprises: the hull; the engine for propelling the hull; the harmful substance reducing device for reducing the harmful substances included in the exhaust gas discharged from the engine; and an engine output control device for controlling the output of the engine to be lowered so as to reduce the amount of the exhaust gas discharged from the engine when the hull is located in the ECA or at the ECA preliminary entry point.

Abstract: A ship comprises: a hull; an engine for propelling the hull; a harmful substance reducing device for reducing harmful substances included in exhaust gas discharged from the engine; and a preheating device for the harmful substance reducing device, preliminarily heating the harmful substance reducing device when the hull is located at an emission control area (ECA) preliminary entry point close to an ECA in which the emission of the harmful substances is restricted. The ship comprises: the hull; the engine for propelling the hull; the harmful substance reducing device for reducing the harmful substances included in the exhaust gas discharged from the engine; and an engine output control device for controlling the output of the engine to be lowered so as to reduce the amount of the exhaust gas discharged from the engine when the hull is located in the ECA or at the ECA preliminary entry point.

Abstract: A system for supplying fuel includes a fuel supplying line connected from a fuel storage tank to an engine and including a pressure measuring sensor, a pump provided on the fuel supplying line and configured to pressurize fuel outputted from the fuel storage tank, a heat exchanger provided on the fuel supplying line between the pump and the engine and configured to heat the fuel outputted from the pump, a first return line provided at a front end of the heat exchanger on the fuel supplying line and configured to return the fuel from the fuel supplying line, and a second return line provided at a rear end of the heat exchanger on the fuel supplying line and configured to return the fuel from the fuel supplying line.

Abstract: A system for supplying fuel includes a fuel supplying line connected from a fuel storage tank to an engine and including a pressure measuring sensor, a pump provided on the fuel supplying line and configured to pressurize fuel outputted from the fuel storage tank, a heat exchanger provided on the fuel supplying line between the pump and the engine and configured to heat the fuel outputted from the pump, a first return line provided at a front end of the heat exchanger on the fuel supplying line and configured to return the fuel from the fuel supplying line, and a second return line provided at a rear end of the heat exchanger on the fuel supplying line and configured to return the fuel from the fuel supplying line.

Abstract: A system for supplying LNG fuel is disclosed. The system includes a fuel supplying line connected from an LNG storage tank to a high pressure engine and a low pressure engine, respectively, a pump formed on the fuel supplying line, and configured to pressurize LNG outputted from the LNG storage tank to high pressure, a first heat exchanger formed on the fuel supplying line between the high pressure engine and the pump, and configured to heat the LNG supplied from the pump, a second heat exchanger formed on the fuel supplying line between the low pressure engine and the LNG storage tank, and configured to evaporate the LNG in a liquid state supplied from the LNG storage tank and a heat source supplying line configured to supply heat to the LNG by supplying glycol water to the first heat exchanger and the second heat exchanger.

Abstract: The system heats glycol water using steam generated by a boiler and heating LNG using the glycol water, thereby increasing efficiently the LNG to temperature required for an engine. In addition, the system senses LNG flowing to a glycol tank using a pressure sensor, etc. when the LNG flows to the glycol tank due to pressure difference between a fuel supplying line and a glycol circulation line generated according as a heat exchanger is broken down, and outputs the flowed LNG to the outside. As a result, the glycol circulation line may be returned to original state and stability of the system may be enhanced.

Abstract: Disclosed is an LNG fuel supply system, including: a fuel supply line connected from an LNG storing tank to an engine; a pump provided on the fuel supply line, and configured to change an LNG to the LNG in a supercooled liquid state by compressing the LNG discharged from the LNG storing tank at a high pressure; and a heat exchanger provided on the fuel supply line between the engine and the pump, and configured to phase change the LNG in the supercooled liquid state to the LNG in a supercritical state by heating the LNG in the supercooled liquid state supplied from the pump.

Abstract: Disclosed is a liquefied gas processing system and method. A liquefied gas treatment system includes: a liquefied gas supply line connected from a liquefied gas storing tank to a source of demand, a pump provided on the liquefied gas supply line, and configured to pressurize liquefied gas discharged from the liquefied gas storing tank, a heat exchanger provided on the liquefied gas supply line between the source of demand and the pump, and configured to heat exchange the liquefied gas supplied from the pump with heat transfer media, a media heater configured to heat the heat transfer media, a media circulation line connected from the media heater to the heat exchanger, and a controller configured to change a flow rate of the heat transfer media flowing into the media heater or calories supplied to the heat transfer media by the media heater on the basis of a flow rate of the liquefied gas supplied to the heat exchanger.