2020 年 45 巻 3 号 p. 165-168
Japan has approximately 130 commercial hydrogen refueling stations currently, and the most of them boost the pressure of hydrogen gas using a compressor. On the other hand, there is the hydrogen cryopump system which was designed in Europe and the number of the stations using that system is also increasing in the United States. The cryopump system has two abilities compared to a compressor. Firstly, the cryopump can make a lot of high pressured gas at 80 (kg/h) (900 (m3/h)), and this amount is three times more than the compressor at the same required power. Due to this ability, the cryopump system is good for fueling the FC buses and it can fill up 5 buses per hour. Moreover, the cold gas from the tank will be used as cooling the pressured gas so that the cooling unit can work more efficiently.