ABS, GasLog study advances new method to predict LNG boil-off rate
 
09/14/2017
 

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

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 stated ABS Chief Technology Officer Howard Fireman.

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. To support this collaborative 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.

 

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