We’re rewarding the question askers & reputations are being recalculated! Read more.

Questions tagged [cryogenics]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0
votes
0answers
24 views

Do companies recover CO2 and water from the purification step of cryogenic air separation, and how?

In the 3rd step of cryogenic air separation, filtered air is purified to remove water, CO2, and hydrocarbons from the N2-O2-Ar stream. Im interested in knowing what happens with that CO2 and water. ...
2
votes
2answers
50 views

Does a tank of liquid nitrogen increase in total internal energy after emptying?

Suppose there's a 10 liter perfectly-insulated sealed tank of saturated liquid nitrogen at 4 bar. Therefore the fluid has properties, $\rho=740 \,\frac{\text{kg}}{\text{m}^3}$, $m=7.4 \,\text{kg}$, $\...
0
votes
1answer
110 views

Which materials we can use for storing liquid nitrogen?

What are the materials we can use for the long-term storage of 30~liters of liquid nitrogen with composition and grade, along with the thickness of the sheet and storage capacity? Can we use any ...
1
vote
0answers
29 views

How can I develope a water loop cooler system sustaining with liquid nitrogen? [closed]

Water will be circulated in the water pipe and liquid nitrogen tanks heat going to cool the water pipe,by the way to the water too. And fan is going to blow this cold air and heat is going to be ...
0
votes
2answers
35 views

Polycarbonate as a short-term cryo-tank?

Can polycarbonate be used to store a cryogenic liquid for a short duration, let's say 15-20 minutes. I've heard that PVC will be really brittle at low temperatures. What I'm trying to do is a rocket ...
0
votes
1answer
508 views

Rate of flow of liquid nitrogen from a static tank through an orifice in a submerged vessel

My background is in electronics, not mechanical engineering and fluid dynamics, so please keep that in mind. Also, this is not a homework or academic assignment. Q: A dewar is partially filled with ...
1
vote
1answer
138 views

Liquifying nitrogen using Joule–Thomson effect

I need equations to calculate these cryogenic problems: Generally how much energy (joules) is required to convert room temperature (21 °C) nitrogen gas into 1 liter LN2 using Joule–Thomson effect ? ...
14
votes
3answers
188 views

Looking for best material for a cryogenic ball mill cup and balls

I am working with a set of alloys that must first be ground up in a ball mill at cryogenic temperatures. It is important that no contamination makes it into the material and careful steps are taken to ...
8
votes
2answers
1k views

Do liquid hydrogen-based cooling devices exist and what are they used for?

Liquid hydrogen cooling could be some intermediate solution between helium and liquid nitrogen based cooling. For example, some type of superconductors could be cooled by liquid H2, and this could be ...