4 ms·
> Yes, you can refill quicker Unless the hydrogen fueling nozzle freezes to the car, which is apparently quite common in high humidity weather and/or when mult
by praseodym 1y ago
> Yes, you can refill quicker
Unless the hydrogen fueling nozzle freezes to the car, which is apparently quite common in high humidity weather and/or when multiple cars are fueled consecutively. See e.g. https://www.sciencedirect.com/science/article/pii/S0360319924025072 https://www.sciencedirect.com/science/article/pii/S036031992...
- petertodd 1y agoThat's just a minor problem, not a fatal flaw. Obviously you can fix that with a small heater for negligible energy cost.
- Filligree 1y agoNow you have a heater in immediate proximity to hydrogen gas. It’s not impossible, but I think you’re underestimating the complexity of doing that safely.
- rad_gruchalski 1y agoHydrogen ignition temperature is 535°C.
- anotherhue 1y agoDid you never do the science experiment? One small spark...
- rad_gruchalski 1y agoDon’t smoke while fuelling your car. Unless it’s a diesel that is…
- praseodym 1y agoCommercially available solutions seem to use a flow of nitrogen to purge condensation from the nozzle, which is quite a bit more complicated: https://www.weh.com/en_us/general-news/preventing-the-fueling-nozzle-from-freezing-when-refueling-with-pre-cooled-hydrogen-2 https://www.weh.com/en_us/general-news/preventing-the-fuelin...
- petertodd 1y agoYes, to comply with paranoid hydrogen safety regulations cheaply. Also, note how the nitrogen is also being used to purge the entire line. Not just keep condensation away. With more engineering work an intrinsically safe PTC heater could be certified and used just fine.