According to an embodiment of the present invention, a cold heat utilizing method using a cold heat system which exchanges heat with fuel supplied to a source of demand from a liquefied gas storage tank, and includes a PCM cold heat storage tank for storing a phase change material whose phase is changed to store cold heat of the fuel, and a cold heat supply line connected to a cold heat receiving device from the PCM cold heat storage tank so as to supply cold heat, comprises: a step of measuring an amount of cold heat stored in the PCM cold heat storage tank; a step of measuring a supply amount and a temperature of liquefied gas; a step of calculating a target temperature of the liquefied gas; and a step of discharging the cold heat stored in the PCM cold heat storage tank. According to the cold heat utilizing method in accordance with the present invention, when cryogenic liquefied gas is heated to be used as fuel, cold heat discharged from the liquefied gas is stored in a phase change material and used for cold thermal energy of an air conditioning unit or cooling a heating element, immediately or at intervals. Accordingly, energy can be saved because the cold heat is utilized rather than discarded. In addition, output of cold heat required from the air conditioning unit and the heating device can be reduced, thereby minimizing energy required for driving a vessel or an offshore plant.

    본 발명의 일 실시예에 따른 냉열 활용 방법은, 액화가스 저장탱크로부터 수요처로 공급되는 연료와 열교환되되, 연료의 냉열을 저장하도록 상변화되는 상변화물질이 저장되는 PCM 축냉열 탱크; 및 상기 PCM 축냉열 탱크로부터 냉열수용장치까지 연결되어 냉열을 공급하는 냉열공급라인을 포함하는 냉열 시스템을 이용한 냉열 활용 방법에 있어서, 상기 PCM 축냉열 탱크의 냉열 저장량을 계측하는 단계; 액화가스의 공급량과 온도를 계측하는 단계; 상기 액화가스의 목표 온도를 산출하는 단계; 및 상기 PCM 축냉열 탱크에 저장되는 냉열을 배출하는 단계를 포함하는 것을 특징으로 한다. 본 발명에 따른 냉열 활용 방법은, 극저온의 액화가스를 연료로 이용하기 위해 가열하는 경우, 액화가스로부터 배출되는 냉열을 상변화물질에 저장하여, 즉시 또는 시간차를 두고서 공조기의 냉열에너지로 이용하거나 발열장치를 냉각하는데 이용 함으로써, 냉열을 버리지 않고 활용하도록 하여 에너지를 절감할 수 있음은 물론, 공조기와 발열장치에서 필요로 하는 냉열의 생산량을 감소시킬 수 있어 선박이나 해양플랜트 운전에 필요한 에너지를 최소화할 수 있다.


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    Titel :

    METHOD OF COLD ENERGY UTILIZATION


    Weitere Titelangaben:

    냉열 활용 방법


    Beteiligte:
    AHN DAE HWAN (Autor:in) / SONG YOO SEOK (Autor:in) / KIM HYUNG KUK (Autor:in)

    Erscheinungsdatum :

    2016-03-31


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    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 / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES



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