Construction of a new liquid hydrogen refueling station process system based on low-loss thermal compression
In order to solve the problems that the core equipments in the existing domestic liquid hydrogen refueling station cannot be localized in the short term and the amount of hydrogen wasted in the refueling process of the liquid hydrogen station is too large,based on the mechanical compression boosting and thermal compression boosting mechanism,a new type of liquid hydrogen refueling station process system based on low-loss thermal compression was constructed.The steady-state simulation was carried out for the new type of liquid hydrogen refueling station process system by using the Aspen HYSYS software,and the operating parameters were obtained,and the optimized process scheme was determined.On this basis,the energy consumption analysis of the existing and the new liquid hydrogen refueling station systems and their thermal compression mod-ules were carried out respectively.The results showed that the specific energy consumption of the existing pressurization and gasification parallel refueling station system was 0.912 kWh/kg,while the specific energy consumption of the new liquid hydrogen refueling station with low-loss thermal compression was 0.322 kWh/kg,which is 64.8％lower than that of the existing liquid hydrogen refueling station.This indicates that the new liquid hydrogen refueling station system with low-loss thermal compression is more energy-efficient,and the exergy efficiencies of key components in the system are higher.
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