How are gases captured in pressure tanks

Hydrogen as the energy carrier of the future

Storage of hydrogen

Hydrogen is a gas at room temperature, i.e. 20 degrees Celsius, it is invisible and odorless. This makes handling more difficult or more complex, but is comparable to natural gas.

If you wanted to make hydrogen liquid, you would have to cool it down to -252 degrees Celsius. That would of course be too time-consuming. In order to be able to store gas, one uses pressure bottles, as they are known, for example, for camping gas or diving bottles. In industry and in laboratories, relatively large amounts of hydrogen are already used today and are supplied and stored in bottles. There are already tank trucks, for example at Linde, for the transport of this gas. The storage can take place at a pressure of up to 700 bar.

In order to be able to store larger amounts, research is currently concerned with underground cavities, for example caverns, with the existing natural gas networks and also with voluminous steel balls.

In some areas of Switzerland, around 10 percent hydrogen is already being added to the natural gas network, for example in Solothurn. You don't notice any difference between the applications, but the carbon dioxide emissions are reduced.

This is the first article in a series on hydrogen. In a further article in the course of spring, the author will look at the possible uses of hydrogen and the chances of a hydrogen economy for the canton of Graub√ľnden.