GREEN4SEA Conference & Awards

5 Apr 2017
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GREEN4SEA Conference & Awards

5 Apr 2017
Learn More

New method to predict LNG Boil-off Rate unveiled

boil
Credit: GasLog

ABS and GasLog LNG Services have completed a joint development project, revealing a new approach to evaluating LNG boil-off rate (BOR).

LNG boil-off gas is the vapor phase of LNG carried in a cargo tank. Accurate assessment of the rate of LNG boil-off gas generation is critical for the design of the cargo tank and the boil-off gas processing system.

As part of the project, a robust CFD analysis procedure was developed modeling the physics of heat transfer, boiling, phase change and vapor flow. Extensive simulations were run on a representative LNG carrier and actual BOR measurements were taken to demonstrate the accuracy of the analysis results.

“By expanding the application of computational fluid dynamics (CFD) analysis to simulate the LNG BOR in cargo tanks, owners are able to better predict boil-off gas and account for it in future designs and operations of LNG carriers,” says ABS Chief Technology Officer Howard Fireman.

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