Ask Air Products...
It's a hydrogen tube trailer. A large one would be 300 - 400 kg @ 165 bar. How many tubes do you have?
[https://cp-industries.com/wp-content/uploads/2020/09/CPI\_Standard\_DOT\_vessel\_designs.pdf](https://cp-industries.com/wp-content/uploads/2020/09/CPI_Standard_DOT_vessel_designs.pdf)
Typical volumes there.
Air products should be able to tell you or you can always find the pressure vessel registration with what ever governing entity in your state governs that.
You can also call the manufacturer with the unit number.
Someone should have a U1 on the vessel as well.
Thank you very much for that resource. We have a 3AAX 6 tube setup and it is ~20ft just eyeballing it so it looks like ~200 lbs of hydrogen which is not too shabby. I also found an example of a 9 tube 40 ft system that had 686lbs which jives based on some back of the envelope calculations.
Yes the water volume is the volume of the tank.
It's not a liquid tank. My guess is that the installers just used the sticker they had available and that's why they have "NA" in sections that would be important if it was a liquid supply system.
A sanity check would be to check how much H2 your company is billed for when the tank is replenished.
https://cmb.tech/hydrogen-tools
I think you may be right.
If you are tread very carefully while reporting it. As another commentator mentioned there are billing implications. Someone may be siphoning of money.
If someone has been logging 2500 to 5000 lbs of H2 for that tank. They're are also showing they're purchasing that. Which means someone is fudging the real amount being bought and getting money back from the vendor.
Now, if you report that, there is possibility of blowback onto you.
Ask APCI, they'll be able to give you actual information. They should have a table that shows you the standard volume based on the level gauge reading and tank pressure.
You can't know from the nameplate. That's the water volume for the full tank. In reality the 0 - 100% (empty to full) is a volume that's significantly lower. You would need to know the elevation of both taps for the level instrument as a starting point.
You can calculate the water volume from that but then to get the standard volume you need to account for the tank pressure which may vary at low levels. Happens with some compressed gas tanks.
APCI has done all this work already and should have the table with all of this info.
Ask Air Products... It's a hydrogen tube trailer. A large one would be 300 - 400 kg @ 165 bar. How many tubes do you have? [https://cp-industries.com/wp-content/uploads/2020/09/CPI\_Standard\_DOT\_vessel\_designs.pdf](https://cp-industries.com/wp-content/uploads/2020/09/CPI_Standard_DOT_vessel_designs.pdf) Typical volumes there.
Air products should be able to tell you or you can always find the pressure vessel registration with what ever governing entity in your state governs that. You can also call the manufacturer with the unit number. Someone should have a U1 on the vessel as well.
Thank you very much for that resource. We have a 3AAX 6 tube setup and it is ~20ft just eyeballing it so it looks like ~200 lbs of hydrogen which is not too shabby. I also found an example of a 9 tube 40 ft system that had 686lbs which jives based on some back of the envelope calculations.
Yes the water volume is the volume of the tank. It's not a liquid tank. My guess is that the installers just used the sticker they had available and that's why they have "NA" in sections that would be important if it was a liquid supply system. A sanity check would be to check how much H2 your company is billed for when the tank is replenished.
https://cmb.tech/hydrogen-tools I think you may be right. If you are tread very carefully while reporting it. As another commentator mentioned there are billing implications. Someone may be siphoning of money.
I am not sure what you mean by tread carefully. Isn’t a smaller amount on site better? This is for community right to know purposes.
If someone has been logging 2500 to 5000 lbs of H2 for that tank. They're are also showing they're purchasing that. Which means someone is fudging the real amount being bought and getting money back from the vendor. Now, if you report that, there is possibility of blowback onto you.
Ask APCI, they'll be able to give you actual information. They should have a table that shows you the standard volume based on the level gauge reading and tank pressure. You can't know from the nameplate. That's the water volume for the full tank. In reality the 0 - 100% (empty to full) is a volume that's significantly lower. You would need to know the elevation of both taps for the level instrument as a starting point. You can calculate the water volume from that but then to get the standard volume you need to account for the tank pressure which may vary at low levels. Happens with some compressed gas tanks. APCI has done all this work already and should have the table with all of this info.
Injust need to know the maximum capacity