A study on hydrogen liquefaction coupled with liquid air energy storage

Abstract Liquid air energy storage (LAES) is one of lager scale energy storage methods that hold the potential for wide application in a society where photovoltaic (PV) and wind power account for a significant percentage. However, PV and wind power are often located in remote areas where the demand for energy is relatively low. As a result, energy transportation is very important. Liquid hydrogen serves as a highly efficient carrier for transporting energy, yet its energy consumption during the liquefaction process is quite substantial. Thus, a hydrogen liquefaction system coupled with LAES, taking the advantage of LAES and liquid hydrogen is proposed and studied in this paper. The results show the specific energy consumption (SEC) for hydrogen liquefaction in the proposed system decreases 14.7% to 6.48KWh/kgLH 2 and the proposed system generates higher incomes compared to both liquid hydrogen storage (LHES) alone and LAES alone.