Abstract: Disclosed herein is a gas purging system for ships having an engine fueled by fuel gas. The gas purging system includes: a fuel supply line along which fuel gas is supplied to the engine; a gas valve unit disposed on the fuel supply line to control a pressure of the fuel gas; and a purge line along which nitrogen gas is supplied to the engine to purge an interior of the engine and an interior of the fuel supply line, wherein the nitrogen gas is directly supplied to the engine along the purge line, purges the interior of the engine and the fuel supply line, and is discharged to outside atmosphere through the gas valve unit.

Abstract: An LED lighting device according to one embodiment of the present invention comprises: an LED array; a first control unit for controlling the dimming of the LED array; a second control unit for transmitting, to the first control unit, a dimming control signal for controlling the dimming of the LED array; and a transformer comprising a primary coil and a secondary coil spaced apart from each other, wherein the first control unit is connected to the primary coil, the second control unit is connected to the secondary coil, the primary coil and the secondary coil are insulated from each other, the transformer transmits a pulse signal that repeats on/off at predetermined intervals from the first control unit to the second control unit, and, when the pulse signal transmitted from the first control unit to the second control unit via the transformer becomes off, the dimming control signal is transmitted from the second control unit to the first control unit via the transformer and is used to control the dimming of t

Abstract: An LED lighting device according to one embodiment of the present invention comprises: an LED array; a first control unit for controlling the dimming of the LED array; a second control unit for transmitting, to the first control unit, a dimming control signal for controlling the dimming of the LED array; and a transformer comprising a primary coil and a secondary coil spaced apart from each other, wherein the first control unit is connected to the primary coil, the second control unit is connected to the secondary coil, the primary coil and the secondary coil are insulated from each other, the transformer transmits a pulse signal that repeats on/off at predetermined intervals from the first control unit to the second control unit, and, when the pulse signal transmitted from the first control unit to the second control unit via the transformer becomes off, the dimming control signal is transmitted from the second control unit to the first control unit via the transformer and is used to control the dimming of t

Abstract: Disclosed is an adiabatic collector for recycling gas, a liquefier for recycling gas, and a recovery apparatus for recycling gas using the same. More specifically, gas to be recycled is collected in an adiabatic manner, cooled to a temperature lower than the dew point thereof, and stored in the liquid state through a phase change, thereby saving energy required for re-cooling the gas. Particularly, the present invention relates to an adiabatic collector for recycling gas, a liquefier for recycling gas, and a recovery apparatus for recycling gas using the same, in which recycling gas is compressed through a natural inducement method using a difference in temperature and pressure while being collected and liquefied, thereby reducing noise, vibration, and size of the collector.

Abstract: Disclosed is an adiabatic collector for recycling gas, a liquefier for recycling gas, and a recovery apparatus for recycling gas using the same. More specifically, gas to be recycled is collected in an adiabatic manner, cooled to a temperature lower than the dew point thereof, and stored in the liquid state through a phase change, thereby saving energy required for re-cooling the gas. Particularly, the present invention relates to an adiabatic collector for recycling gas, a liquefier for recycling gas, and a recovery apparatus for recycling gas using the same, in which recycling gas is compressed through a natural inducement method using a difference in temperature and pressure while being collected and liquefied, thereby reducing noise, vibration, and size of the collector.

Abstract: A method of operating an electronic device is provided. The method includes linking text information and use information about the text information, storing the linked text information and use information in a database, analyzing a user preference for the text information based on the use information, and determining text information that will be displayed with priority based on the user preference.