Progress of liquefied natural gas cold energy utilization

Abstract

Over the past decades, a variety of different approaches to realize the utilization of liquefied natural gas (LNG) cold energy have been undertaken. By reviewing on the existing LNG cold energy utilization ways and considering the suggestions of taking advantage of the principle of temperature counterpart and cascade utilization, this paper proposes a novel method that LNG cold energy can be used in liquid air energy storage (LAES) system. Because of a high match in temperature between LNG gasification process and air liquefaction stage, LAES system combined with LNG cold energy has an improved efficiency compared with the conventional LAES system. Additionally, the cold energy of LNG can be taken full advantage of.