HOD Sodium-Borohydride fuelled Hydrogen generator
In 2006 in partnership with Millennium Cell, El.Ma. has built an automatic Hydrogen generator from hydrolysis of Sodium-Borohydride with process control.
This Hydrogen generator, named HOD (Hydrogen-On-Demand™), produces pure Hydrogen through chemical reaction from Sodium-Borohydride NaBH4, using patented catalysts.
4 atoms are given by Sodium-Borohydride and 4 atoms are given by water:
Hydrogen is produced only in desired quantity, in order to mantain constant output pressure to compatible values with traditional fuel cells systems.
Performances of this system are the following:
- Power: 5 kW
- H2 flow: 3.8 m3/h
- Max pressure: 90 psi (6 bar)
- Gas: pure Hydrogen (CO < 0.5 ppm; CO2 < 10 ppm)
- Autonomy (max power): 3h
The Hydrogen production cycle is managed by a control process entirely developed by El.Ma.
Following images show HOD connected with two different systems based on fuel cells: the first is produced by ReliON (1 kW) and uses PEM technology, the second is produced by Astris Energi (2.4 kW) and uses AFC technology.
Both generators are connected to a resistive test load.
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