Abstract
Conventional hydrogen station for filling a hydrogen tank of a motor vehicle from the low pressure within the time of 3 minutes limited and provided with an expensive high pressure pump, the price is in the way of the spread. In this research, the pressure reduction method, without the need for expensive high pressure pump, and to allow refilling of the hydrogen in the vehicle tank 1 min (Fig. 1). In addition, the two-layer for realizing a constant pressure type, of the other layers to be combined gas (medium) is an argon gas, water, optionally but such carbon dioxide gas can be used, during both of which the accident safety I improved. Also the pressure of and reduce the cyclic fatigue of the tank, which also improves the safety.In the hydrogen station constant pressure system shown in Figure 1, the high pressure gas filling pump requiring large high energy is not required. (Reduced from 80MPa to 1/160 of 0.2MPa) By the station scale but established two tons hydrogen gas container in two stages shown in Figure 1, to obtain a gas output of 70MPa from above by injection. These can gas transfer in the tank volume variation by the booster pump water in about one hour.
