Our 36 litre - 350 and 700 bar hydrogen tanks are approved according to the EC/79/2009 - IM/406/2010 regulation.
To meet the specific needs of a well-known aerospace actor, ULLIT has designed a 36 litre - 350 bar hydrogen cylinder approved TPED ADR-EN12245 for fuel cell.
Main selection criterion: extremely low permeation rate 4.10-5 Ncm3/s
The JRC PETTEN Laboratory (Laboratory of the European Union) has carried out on a ULLIT 36 litre bottle : 1 000 hydrogen cycles, from 20 to 350 bar, followed by 500 hours of permeation on the same bottle.
The calculated permeation rate of the cylinder-valve and seal assembly was between 0.14 and 0.64 Ncm3/l/h.
Our manufacturing processes allow much higher performances than the requirements of the different standards.
|Standard||Maximum allowed hydrogen permeation rate|
|EC 79/2009||6 Ncm3/Litre/Heure|
|ISO 15869:fev 2009||2.8 Ncm3/Litre/Heure|
ULLIT has successfully passed all the tests requested by the regulation CE/79/2009 with more than 45 000 cycles performed without leakage or failure.
After the tests, the JRC PETTEN laboratory has carried out an external and internal inspection, thanks to a swing prism borescope.
The tank showed :
• No deterioration on the external surface,
• No collapse, no buckling effect.
As part of the European StorHy project, ULLIT has met all the requirements :
- Breaking pressure higher than 1 600 bar,
- 15,000 cycles at 20 - 875 bar,
- Permeation less than 1 Ncm3/l/h
The Air Liquide laboratory has measured the permeation of a ULLIT bottle (without accessories) pressurized at 680 bar stabilized : the result was 0.02 Ncm3/l/h
We can design and manufacture a storage solution adapted to your needs.
From the smallest bottle to the largest tank, ULLIT can manufacture tanks with a maximum capacity of 1 500 liters, a max. length 3 200 mm and a max. diameter 900 mm.