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Cascade refuelling from a tube trailer
We are planning to introduce two fuel cell coaches (350 bar) into our bus fleet. Our refuelling choices are either:
* Directly from a (450 bar) tube trailer with 50 gas cylinders and a built-in dispenser. There is no compressor or cooling.
* Via an HRS with compressor, cooling, storage and dispenser
Our long term plan is establish a production and refuelling site for our entire fleet (100+ vehicles) so for this trial we’re seeking to minimise our infrastructure expenditure.
Be glad to hear any thoughts or experiences others may have on the first option. Is it viable? I’m concerned about refuelling times and the amount of unused hydrogen in the tube trailer.
Thanks
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2 Replies
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Considering your long-term plans, the HRS option has a better scalability and viability over the first option. As the HRS would be comprised of complete compression, cooling, storing and dispensing system, which would then have a dedicated compression system thereby reducing downtime, and making the refueling process a bit faster. HRS can handle the compression and storage of Hydrogen at the appropriate pressures, ensuring proper utilization and less wastage.
However, if your primary goal is to minimize infrastructure expenditure for the trial phase, and you can tolerate longer refueling times and potential wastage of unused hydrogen, the direct refueling option from a tube trailer may be a viable choice.
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Dear both, we recently released a tech video on this I believe, which might be helpful for you in your planing an cascade management in the refueling process.