FUEL GAS SUPPLYING SYSTEM IN SHIPS

摘要

Disclosed is a fuel gas supplying system. The fuel gas supplying system according to an embodiment of the present invention includes: a storage tank accommodating liquefied gas and an evaporation gas; a first fuel gas supply line which comprises a compression part pressurizing the evaporation gas of the storage tank, and supplies the evaporation gas pressurized by passing through the compression part to a first engine; a second fuel gas supply line which comprises a pressurizing pump pressurizing the liquefied gas of the storage tank and a carburetor vaporizing the pressurized liquefied gas, and supplies boil-off gas generated by passing through the pressurizing pump and the carburetor to the first engine; and a re-liquefaction line which is supplied with a part of fuel gas formed with the pressurized evaporation gas and boil-off gas, and re-liquefies the same. The re-liquefaction line may be provided by including: a first heat exchanging part exchanging heat of a part of the fuel gas with the evaporation gas of the front end of the compression part; a second heat exchanging part exchanging heat of a part of the fuel gas with the liquefied gas of the front end of the pressurizing pump; and a re-liquefaction control valve which is prepared to supply a part of the fuel gas supplied to the re-liquefaction line to the first heat exchanging part or the second heat exchanging part selectively. The fuel gas supplying system can use and manage the fuel gas efficiently.