Problems with determination of evaporation rate and properties of boil-off gas on board LNG carriers

• Autorzy: Głomski P. , Michalski R.
• Języki publikacji: EN

Abstrakty

EN

The paper discusses selected issues related to the problems of determining boil-off (evaporation) rate (BOR) of liquefied natural gas (LNG) on board LNG carriers. Review of available literature describing theoretical models of LNG boiling-off phenomenon during maritime transport is presented. Given are examples of simulation results of LNG evaporation process based on theoretical analysis. Also presented are methods of determining boil-off rate based on the results of observations of the concerned phenomenon on board selected ships. The paper draws attention to theoretical differences in a daily boil-off gas (BOG) quantity resulting from the adopted method of determining BOR. Namely, in some publications BOR values refer to the loaded quantity of LNG (or even to the ship’s cargo carrying capacity), and in the rest to the current quantity on board. The paper outlines resulting theoretical differences in quantity of cargo remaining on board. Addressed are also issues related with variable, in the course of the voyage, BOG (and thus LNG) composition determining its heating value, which is of particular importance in the case of its use as a fuel for ship’s engines.

Słowa kluczowe

EN

boil-off rate; evaporation rate; boil-off gas; LNG vapour properties; LNG carrier

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2011
• Tom: Vol. 6, no 1
• Strony: 133--140
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Głomski P.

autor

Michalski R.

• West Pomeranian University of Technology, Szczecin al. Piastów 41, 71-065 Szczecin tel.: [phone],

Bibliografia

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