Siriously cold refrigeration unit

This is a test of a very cold refrigeration system. It will be used to help dehumidify air in a vacuum chamber that TV screens are made in. The copper tube is at a temperature of -150C.

Category:

Sports

Tags:

• cold
• refrigeration
• test

[tstatech]

-150C COME ON? I'm callen bullshit on that one. What refrigerant are you using?

[richardcloudbase]

@tstatech I is a mix of all kinds of stuff. The guy we made these units for is very cagey about the mix. The system uses a bunch of plate heat exchangers to boil of each refrigerant in turn, kinda like a cascade system but in one circuit.

[danielelteso]

I dare you to lick that

[CallOfDuty4Fish]

Your coppper is cold, its shivering. 

[MilanKarakas]

Very cool video, no pun intended. What about moving air with fan into a 'cold chamber' where water will collect instead freezing on the copper tubing? At first, water vapor will reject to condensate in a cold chamber, but once cooled it will stay there.

I noticed this summer than in my room A/C make at first less humid air, but after long period of use - humidity in the room actually increases and every object in the room become humid too.

[9020powrmax]

Will -150C temps damage the copper tube by making it too brittle during the freezing/defosting cycles? That is -238 Farenheit.. I have cracked brass fittings with liquid propane @-44 F

[sprogdiklis]

refrigerant type?

[ps3spoiler]

now just wrap the copper around a fan and get a frezzer

[callmeshane303]

@codsixrules

I was going to use ethylene as a refrigerant, BUT the industrial production of it and use, is basically a once through process, and not a continuous loop - because ether / ethylene (note possible mix up) forms explosive compounds with assorted metals, light, etc., etc., etc.

[LittleJohnEnterprise]

why it's shaking ?

[ivellios55]

You can see the air liquefying on the coil. I want to build a something that can produce liquid air like that ! I wonder if used air conditioner parts can produce similar results.

[tstatech]

@richardcloudbase Very cool, I apologize for not believing you about the temperature. I havn't ever seen any application like that.

As soon as shut it off the water will end right back in the air though. I'm not sure that I understand why this is done other than it might be quicker than pulling a really deep vacuum on a large volume container.