Nitrogen Cylinder

[heliumornitrogen]

Does anyone know exactly how many litres of compressed nitrogen gas a 2 litre cylinder contains? Thanks

 

[Mare Imbrium]

400l uncompressed when compressed with 200 bar

 

[heliumornitrogen]

400l uncompressed when compressed with 200 bar

Thanks, would a 2L cylinder @ 200 BAR be adequate? I´m starting to reconsider whether my cylinder is large enough?

 

[Greenberg]

Thanks, would a 2L cylinder @ 200 BAR be adequate? I´m starting to reconsider whether my cylinder is large enough?

It is almost guaranteed to work; you are just under the 30min threshold, i.e., 15LPM x 27min. Just make sure that you are not shortchanging yourself with a pressure level lower than 200bar.

 

[Mare Imbrium]

I consider to use 2x2l bottles at the same time but have concerns, that the two tubes make a big gap at the bag.
Does anybody know about a "cascade effect" when using more than one bottle?

 

[heliumornitrogen]

I consider to use 2x2l bottles at the same time but have concerns, that the two tubes make a big gap at the bag.
Does anybody know about a "cascade effect" when using more than one bottle?

Would it not be better to just purchase a larger cylinder?

 

[Mare Imbrium]

Sure, but I have a vendor for 2l and it's small, lightweight and inconspicuous.

Do you have a 2l cylinder ?

 

[Greenberg]

Would it not be better to just purchase a larger cylinder?

Please elaborate on what you mean by "cascade effect;" are you referring to cascade filling?

 

[Aap]

Exactly zero percent of people will still be alive after 27 minutes in a zero oxygen environment.

 

[Mare Imbrium]

Please elaborate on what you mean by "cascade effect;" are you referring to cascade filling?

TiredHorse wrote about a cascade system, necessary for small cylinders.

 

[Greenberg]

Do you remember what he meant by that, for example, having 2 cylinders hooked up in series?

 

[Mare Imbrium]

You need a bare minimum of 600L of inert gas (argon, nitrogen or helium) --40 minutes of flow at 15Lpm-- which translates into a 20cf cylinder. Stacking small cylinders into a cascade system is technically challenging, so probably not something you want to mess with.

 

[Greenberg]

Thank you! Yes, it looks like he was referring to the serial configuration of cylinders.

 

[Mare Imbrium]

Thank you! Yes, it looks like he was referring to the serial configuration of cylinders.

Do you think, this is a problem - 2 cylinders with 2l together ?

 

[Greenberg]

Do you think, this is a problem - 2 cylinders with 2l together ?

It is not a problem; it just requires that you purchase a T-junction connector.

 

[heliumornitrogen]

Sure, but I have a vendor for 2l and it's small, lightweight and inconspicuous.

Do you have a 2l cylinder ?

Yes, my cylinder is 2L.

Exactly zero percent of people will still be alive after 27 minutes in a zero oxygen environment.

That´s what I thought. The final exit book recommends purchasing the smaller cylinder.

 

[Mare Imbrium]

Thank you! Yes, it looks like he was referring to the serial configuration of cylinders.

Do you think there is a cascade effect with two 2l cylinders ? What are the impacts ?

 

[Greenberg]

I am not an engineer so I do not know what happens to the pressure gradient. For example, do the pressures equalize by averaging out, or does the shape of the Y-connector change the total pressure considerably. Perhaps, another forum member is more able to respond to the question.

 

[goingrealsoon]

I have a 20cf nitrogen cylinder they only wanted to fill with 2200psi, I was able to convince them to fill it to 2500psi. My research says that is more than enough. Any thoughts?

 

[Greenberg]

You're fine.

 

[goingrealsoon]

Thank you for being so very helpful!!!! I am getting the oxygen sensor soon...I'll let you know how it reads.

 

[LADY007]

That's why I bought a 40cf cylinder of nitro gas

 

[TF64]

I bought 18CF food grade nitrogen, which is 98% to 99.5% pure, instead of pure nitrogen. I would have to open an account with the welding supply store to buy pure nitrogen since it is a "specialty gas." I would also have to rent the tank, whichI don't want to do. So I am hoping food grade will be sufficient. Is food grade nitrogen sufficient?

 

[befree]

Food grade or not doesn´t matter, as long as it is nitrogen 2.8 (=99,8%) purity or higher. I don´t know if 98% to 99,5% works as well.

 

[outrider567]

I bought 18CF food grade nitrogen, which is 98% to 99.5% pure, instead of pure nitrogen. I would have to open an account with the welding supply store to buy pure nitrogen since it is a "specialty gas." I would also have to rent the tank, whichI don't want to do. So I am hoping food grade will be sufficient. Is food grade nitrogen sufficient?

As long as its 99.0% pure--Call them and ask them the exact percentage

 

[TF64]

As long as its 99.0% pure--Call them and ask them the exact percentage

Thanks. Yes, I confirmed with the supplier that it is 99% pure.