Article written by www.precisionfluidonline.it on 04/06/2021 – Read the Original Article
Why is the storage of hydrogen in metal hydride important?
Hydrogen-powered trucks, buses or cars are very similar to the common battery-powered “electric” cars that are seen more and more every day. Hydrogen vehicles are also electric vehicles, but the power system is partly different: hydrogen and oxygen react inside a fuel cell, generating the electricity that drives an electric motor. While battery-powered vehicles draw energy from pre-charged lithium-ion batteries, hydrogen-powered vehicles store fuel on board, in pressurized tanks.
For maximum energy density, the stored hydrogen must be subjected to pressures up to 700 bar in order to be contained in the limited space of the tank and ensure adequate autonomy. These tanks must be strong enough to withstand high pressure and must also be impermeable to hydrogen to prevent the gas from escaping. However, alternatives to tanks are being sought in order to avoid safety problems related to extreme pressure and prevent energy waste when compressing hydrogen at similar pressures.
DLR, the German aerospace agency in Stuttgart, is involved in studying alternative methods for storing hydrogen for use in fuel cells or vehicles. For the storage of hydrogen in metal hydride tanks, Wagner Mess- und Regeltechnik, Bronkhorst distributor, was asked to identify a solution for the controlled introduction of gaseous hydrogen into the tank, and to measure the released hydrogen gas. from the container …