40L, 15Mpa standard bottled nitrogen, filling 2.8 cubic tanks, 0.025Mpa, a bottle of this nitrogen can fill several tanks
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This post was last written by liu* anzhe11 edited the title on 2019-8-2 13:48 40L, 15Mpa standard bottled nitrogen, filling a 2.8 cubic tank, 0.025Mpa, how many tanks can be filled with a bottle of nitrogen? This is how I calculated it: 40/1000 * 15÷(2.8 * 0.025) = 8.57, it can charge about 8, but when actually charging, it can only charge less than three. Was it wasted due to replacement before charging? How much nitrogen does replacement generally consume? Also, should I buy less than 40L of nitrogen?
This post was last edited by qugd on 2019-8-2 13:39 Because you actually recharge smartly, you may get a few more if you recharge stupidly.
Thank you. I made a typo and can only charge less than three.
First of all, you should make sure that the filled cylinder originally contains nitrogen with a gauge pressure of 0. Secondly, calculate it according to PV=nRT. The n value changes every time it is filled. Calculate again until the inflation pressure is insufficient.
This post was last edited by Qingcheng Jun on 2019-8-2 15:56. 15Mpa is 150 atmospheric pressure. It needs to be multiplied by 150, not 15. The nitrogen of this specification can be up to 6 standard cubic gases. It can actually be used to inflate the tank between 5-6 standard cubic meters. The details are more important. Consider the effective space in the tank that needs to be inflated. Does inflation start from normal pressure 0, or from negative pressure -0.1Mpa? 0.025 is 0.25 atmospheric pressure, 0.25 * 2.8=0.7 cubic, if you start from a vacuum it is 1.25 * 2.8=3.5 cubic
PV=nRT, P refers to absolute pressure. You should clarify whether 0.025Mpa is gauge pressure or absolute pressure? Judging from your description, it should be gauge pressure.
Gasifier or nitrogen protection? I don’t know how you operate it. Is the tank to be inflated filled with air or nitrogen? Is the replacement operation done after vacuuming or directly inflating the tank?