Hydrogen is dense by weight but not by volume. Hence it requires a larger tank for storage. Hydrogen compressor is used to overcome this limitation of hydrogen as a fuel. The device increases the pressure of hydrogen by reducing its volume resulting in compressed hydrogen or liquid hydrogen.
For storage and transportation
The hydrogen gas in its natural state has very low pressure which is not suitable for storage and transportation. The device works similar to a fuel cell, a voltage is applied to the membrane, and the resulting electric current pulls hydrogen through the layer.
Compressed hydrogen gas doesn’t need massive storage tanks.
Compressed hydrogen can be easily transported through a pipeline to a hydrogen refueling station
The electrochemical compression of hydrogen is carried out to achieve the desired pressure (300 bar to 700 bars).
The pressure difference is used to meter the hydrogen flow.
Hydrogen can be compressed using any of the following procedures
Direct compression of hydrogen using PEWE
Downstream mechanical compression
With the help of EHCs
The key component in hydrogen stations
Hydrogen compressors are primarily used in refineries
Compressed hydrogen is used as fuel gas for various energy requirements. Hydrogen compressors increase the pressure of hydrogen by reducing its volume resulting in compressed hydrogen (CH2, CGH2 or CGH2).
Hydrogen is compressed using hydrogen compressors at 350 bars (5,000 psi) to 700 bars (10,000 psi).