What would it take to build a cryogenic cooler?

[Shingoshi]

Both of us took to the idea that vortex tubes would be good at producing cold. And in that, we were both wrong, as you have already proven. So what would happen if we concentrated on the things that everyone here knows they're good at. Producing heat and noise.

A turboexpander, also referred to as a turbo-expander or an expansion turbine, is a centrifugal or axial flow turbine through which a high pressure gas is expanded to produce work that is often used to drive a compressor.[1][2][3]

Because work is extracted from the expanding high pressure gas, the expansion is an isentropic process (i.e., a constant entropy process) and the low pressure exhaust gas from the turbine is at a very low temperature, sometimes as low as −90 °C or less.

Turboexpanders are very widely used as sources of refrigeration in industrial processes such as the extraction of ethane and natural gas liquids (NGLs) from natural gas,[4] the liquefaction of gases (such as oxygen, nitrogen, helium, argon and krypton)[5][6] and other low-temperature processes.

And unlike the vortex tube, all of the gas going into a turboexpander is coming out cold.

Let's focus for a moment on the amount of heat vortex tubes can produce. And the intensity of sound isn't to be ignored either. Because sound at high volume is nothing more than strong pressure waves. Pressure waves can be amplified as well. Instead of trying to lower the inlet gas temperature going into a second stage tube, what if we concentrated on raising it. Simply done by directing the hot exhaust of one vortex tube into the inlet of another.

Vector tubes will raise the temperature of the inlet gas from 70F, to 230F. How much more would the noise be amplified? It produces more mass of heat than it does of cold. The comparison is a 160F rise of heat versus 110F drop in cold. So what would happen if the second vortex tube's inlet was 230F? What would the outlet temperature be then? Maybe 390F? Have you ever heard of steam detonation? We wouldn't have to worry about the sound level of the first tube, because it would be silenced by the second. If we then drove the heated outlet gas of the second vortex tube through a venturi injector and into a turboexpander, we would have a very high flow rate of heated high-pressure gas. Which could then be expanded and cooled.

The venturi injector or eductor would create a very strong suction. In the process the mass of the flow would be increased. The turboexpander would receive an even larger mass of gas entering it. So, can you stage turboexpanders, the way you can stage venturis and vector tubes? The industry is already aware of staging injectors to increase the power of their suction. By doing so, they are able to create very powerful vacuums. Remind me here, what happens to the temperature of a fluid subjected to an extreme vacuum?

Would it be possible to create an alternative of a multi-effect vacuum generator? We would have both the heat and the suction to create one. Again, all of this could be moot. Because if turboexpanders don't work the way I think, we might still wind up producing more heat than cold. I have to look closer at the mechanics of turboexpanders to see how they really work. Having been wrong once, makes me not want to do so again. So if you know something here that I need to, fill me in. Please!

My line of thought here is on:
1.) Turboexpanders
2.) Thermoacoustic refrigeration
3.) High-energy vacuums.

Now I'll go back and crawl into my corner.
Shingoshi