A Hydrogen tank which is also known as a cartridge or a canister serves the main purpose for the storage of the hydrogen gas. It is of considerable types depending on the type and format of hydrogen gas used. The first type of such a hydrogen tank was demonstrated in 2001. These type IV hydrogen storing vessels contained compressed hydrogen at a pressure of 700 bar, an equivalent of 10,000 psi. And with its invention it quickly got its uses here and now, especially in the transportation vehicles. Toyota FCHV, Mercedes-Benz F-Cell and the HydroGen4 are among the first motor vehicles which made it successfully on the road with the type IV tanks. These cartridges can be refilled however with compressed hydrogen gas at a pressure of 350 or 200 Bar at the hydrogen station in Hamburg. These hydrogen tanks are fitted with a TN1 connector which is compatible with the common types like those
The four main types of canisters are: The Type I consists of a metal tank with the body of either steel or aluminum, and approximately the maximum pressure reaches to about 175 bar or an equivalent of 2538 psi in case of aluminum and with steel the pressure reaches to about 200 bar or an equivalent of 2900 psi. The second type or Type II consists of the metal tank with aluminum body filament windings like those of glass fiber or carbon fiber around the width of metallic cylinder.
Approximately the maximum pressure reaches to about 263 bar or an equivalent of 3814 psi in case of aluminum with glass windings, and in case of steel metallic body with windings of carbon or armide, the pressure may reach to as high as 299 bar or an equivalent of 4,336 psi. In the third type or Type III the tank body is made from composite material of the likes of composite fiberglass/aramid or carbon fiber along with a metallic liner of either aluminum or steel. In this type the maximum approximate pressure, is 305 bar or an equivalent 4,423 psi in case of aluminum/glass. While, when it comes to a body of aluminum/aramide the pressure may reach as high as 438 bars or an equivalent 6,352 psi. The last type or Type IV consists of Composite tanks such as those of carbon fiber with a polymer liner which necessarily has to be a (thermoplastic).The estimated maximum pressure with a plastic/carbon combination is 661 bar (9,586 psi) and higher.
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