A refrigeration and air-conditioning system using LNG cold heat in accordance with an embodiment of the present disclosure comprises: an LNG storage unit (100) in which liquefied natural gas is stored; an LNG fuel supply unit (200) which vaporizes the liquefied natural gas in the LNG storage unit (100) and supplies the vaporized liquefied natural gas to an engine; a BOG storage unit (300) which collects and stores BOG naturally generated from the LNG storage unit (100); a BOG fuel supply unit (400) which supplies a portion of the BOG in the BOG storage unit (300) as a fuel of the engine; a BOG reliquefaction unit (500) which re-liquefies the portion of the BOG in the BOG storage unit (300); a cold heat control unit (600) which collects cold heat and distributes the collected cold heat to the BOG reliquefaction unit (500); and a refrigeration and air conditioning unit (700) which receives the cold heat stored in the cold heat control unit (600) and uses the received cold heat for refrigeration and air conditioning. The BOG storage unit (300) comprises: a storage tank module (310) in which BOG is stored; a cooling module (340) which controls the temperature of the BOG stored in the storage tank module (310); and a distribution module (320). The distribution module (320) may be configured to distribute the BOG to the BOG fuel supply unit (400) and the BOG reliquefaction unit (500) based on the temperature of the stored BOG. In accordance with the present invention, the refrigeration and air-conditioning system using LNG cold heat can increase energy efficiency using BOG as a fuel of an engine.

    본 개시의 실시예에 따른 LNG 냉열을 이용한 냉동 공조 시스템은,액화천연가스가 저장되는 LNG 저장부(100); 상기 LNG 저장부(100)의 액화천연가스를 기화시켜 엔진에 공급하는 LNG 연료공급부(200); 상기 LNG 저장부(100)에서 자연 발생되는 BOG를 수집하여 저장하는 BOG 저장부(300); 상기 BOG 저장부(300)의 BOG 일부를 엔진연료로 제공하기 위한 BOG 연료공급부(400); 상기 BOG 저장부(300)의 BOG 일부를 재액화하는 BOG 재액화부(500); 냉열을 수집하고 상기 수집된 냉열을 상기 BOG 재액화부(500)에 분배하는 냉열제어부(600); 및 상기 냉열제어부(600)에 저장된 냉열을 전달받아 냉동 공조에 이용하는 냉동공조부(700); 를 포함하고,상기 BOG 저장부(300)는 BOG가 저장되는 저장탱크모듈(310), 상기 저장탱크모듈(310)에 저장된 BOG의 온도를 조절하기 위한 냉각모듈(340) 및 분배모듈(320)을 포함하되,상기 분배모듈(320)은 저장된 BOG의 온도를 바탕으로 상기 BOG 연료공급부(400)와 상기 BOG 재액화부(500)에 BOG를 분배하는 것을 특징으로 하여 구성될수 있다.


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    Title :

    LNG Refrigeration and air conditioning System for LNG Fuelled Vessel


    Additional title:

    LNG 냉열을 이용한 냉동 공조 시스템


    Contributors:

    Publication date :

    2021-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES / F25D REFRIGERATORS , Kühlschränke





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