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Nitrogen Flow Calculation

05/10/2017 2:30 AM

Can anybody explain how to calculate the nitrogen flow (m3/Hr) in 1" line at 1 Kg/Cm2(g) and if On/Off valve opens it will exposed to atm(0kg/cm2 g)

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Anonymous Poster #1
#1

Re: Nitrozen flow calculation

05/10/2017 3:09 AM

For nitrozen flow, just go with the Tao.

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#2
In reply to #1

Re: Nitrozen flow calculation

05/10/2017 3:43 AM

What is TAO

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Anonymous Poster #1
#3
In reply to #2

Re: Nitrozen flow calculation

05/10/2017 3:59 AM

I am being a bit facetious, but not totally so. The Tao is a Chinese philosophy associated with Lao Tse and Chuang Tse (various spellings for each). It is commonly translated as "the way", and it tends to be open-minded, non-resistant, go-with-the-flow. The spelling "nitrozen" suggested Zen Buddhism, which might be loosely related. There is some Zen (s)wordplay in all of this.

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#4

Re: Nitrozen flow calculation

05/10/2017 4:13 AM

If this is nitrogen gas rather than liquid, you won't go too far wrong by simply assuming it is air. There are lots of Web-accessible calculators for air flow versus pressure difference. Pick a pipe size the next (or second next) larger size than you need, and then throttle with a valve.

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#5
In reply to #4

Re: Nitrozen flow calculation

05/10/2017 4:19 AM

A calculator link posted in a recent thread in Mechanical Engineering

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#6
In reply to #5

Re: Nitrozen flow calculation

05/10/2017 4:39 AM

That can probably be found by an Easter-egg hunt or wild-goose chase....

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#7
In reply to #6

Re: Nitrozen flow calculation

05/10/2017 4:53 AM

My post was mainly for OP's benefit. I replied to yours as you'd mentioned air vs N2 and websites

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#10
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Re: Nitrozen flow calculation

05/10/2017 3:35 PM

I think he wanting to make a nitrogen powered 'tater launcher. Unfortunately, the pressure is all wrong, the valve and line size is wrong, except for "new" potatoes.

Line length not given, I suppose he does not need a muzzle reaction suppressor.

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#8

Re: Nitrogen Flow Calculation

05/10/2017 11:40 AM
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#9

Re: Nitrogen Flow Calculation

05/10/2017 3:33 PM

In a word, NO! No line length given.

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#11

Re: Nitrogen Flow Calculation

05/11/2017 6:07 AM

Nitrogen flowing out of the end of a piece of pipe isn't doing anything useful. Depending on the length of pipe, the velocity out of the end could approach the speed of sound at [pressure, temperature], though it certainly cannot exceed it.

In order for this nitrogen to do something useful, and the only thing it is doing at present is making a big load of unwanted noise (in which case air would be a better choice), it has to be connected to something that presents back-pressure. So the premise in the original posting <...exposed to atm(0kg/cm2 g)...> is absurd.

So, nobody <...Can...explain...> until the purpose of this currently-abstruse contrivance is explained to the forum. Until that happens, any attempt at calculation is futile.

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