References to the Evaluation of LNG Application and Performance

Gas Engineering

Now, the quantity of LNG demand is steadily growing. The biggest drawback of LNG in compared to regular NG transportation is that it requires energy to liquefy LNG and subsequently some heat to re-gasify it. Regasification is often carried out with the loss of the low-temperature potential generated during LNG liquefaction. This potential may be used to generate energy in a variety of ways, including heat rejection from the thermodynamic cycle, which increases efficiency, preliminary pressurization of LNG by pump or thermal compression, and subsequent expansion in turbines, or a combination of these two processes. This article estimates the maximum work that can be gained by re-gasifying 1 kilogram of LNG using various techniques. The calculations suggest that heat rejection and thermal compression are the most efficient strategies.

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