Dynamic simulation of a liquefied hydrogen export terminal

At prospective liquid hydrogen (LH 2 ) export terminals, managing boil-off gas (BOG) presents a significant challenge that has not been adequately explored in the literature. This work is a case study examining the management of BOG evolved during storage and carrier loading at an export terminal, carried out using detailed dynamic simulations. The considered terminal operates with a LH 2 production rate of 450 t/d, and a carrier capacity of 160000 m 3 . The normal operation cycle spans a period of 28 days, during which all the generated BOG is recovered. The estimated levelized cost for terminal storage and shipment is 2.77 USD/kg, underlining the need for further research to reduce costs and enhance the economic viability of LH 2 export. A sensitivity analysis indicates that the production rate primarily affects the duration of the normal operation cycle and, consequently, shipping frequency, while feed pressure and ortho-para hydrogen composition significantly influence total BOG generation. • A 160,000 m 3 export terminal for liquefied hydrogen is designed. • Boil-off gas produced during storage & carrier loading accounts for 17 % of the feed. • The estimated levelized cost for liquid H 2 storage and sea transport is 2.77 USD/kg. • The normal operation cycle takes 8 days when the liquid H 2 feed rate is 1800 t/d. • Liquid H 2 feed pressure & ortho-para composition greatly affect boil-off generation.