1 reply to this topic

[princessme]

How is the conversion done? I need to convert 1000 Nm3/hr of air to Nm3/hr of nitrogen. What is the conversion factor? Is it dependent on the molecular weight?

[ankur2061]

Nm3/h of Nitrogen = Nm3/h of Air*Sqroot (Mol wt of Air / Mol wt of Nitrogen)

 

See Graham's law in Wikipedia.

 

Regards,

Ankur

[Napo]

Princessme,

The air composition in volumen is 79% nitrogen and 21% oxygen (approximately), then you have 790 Nm3/h.

Napo.

[ankur2061]

Princessme,

The air composition in volumen is 79% nitrogen and 21% oxygen (approximately), then you have 790 Nm3/h.

Napo.

I believe OP is asking for replacing Air with N2 for blanketing since this is "Tank Blanketing and Venting" sub-forum and not mole or volume percent of Nitrogen in Air.

 

Regards,

Ankur

[Napo]

Dear Ankur,

If this is the question, your answer is absolutely correct. Excuse me.

Regards,

Napo.

[Bobby Strain]

Princess,

       You should have learned in high school chemistry that any mole of ideal gas occupies the same volume at normal conditions.

 

Bobby