Anyone ever see one of these?

[Octopus]

Cryogenic compressor? It says 400 Hz humm not your regular power source? I was told that it was a cryogenic compressor for aircraft but who knows?

[Octopus]

:anyone:

[yellowirenut]

looks like something off the Millennium Falcon.

[wolfdog]

It looks like the compressor part of the FLIR system out of a jet fighter. One of my renters use to buy from the military surplus auctions at Texas Instruments. He bought 5 complete systems to scrap out one time. The compressor was 200volt 3 phase 400hz. and it said Helium was the refrigerant. It had heat exchangers made with peltier junctions and several lenses that would drop down in front of the imaging chip.

Somebody didn't remove the part that still belonged to uncle sam and TI security staked out the house for several days before they finally bought the part back from him off the record.

[DeltaT]

All the fitting, braded hoses, stainless steel and the 400 HZ pretty well mean it fits in something with wings.

You can probably still use it if you buy a GPU (Ground Power Unit) for about $250,000 or so. Those are the things hooked to military aircraft while they are sitting on the ground waiting on stand-by.

[Octopus]

Oh great so I have to spend 250k just to make sure it works, lol maybe e-bay is the best thing for this.

[DeltaT]

The only thing that's 400 HZ on that thing is the motor. Pull the electric motor off and see if a normal one will connect to the compressor and you are good to go. Just check the RPM rating of the original electric motor.

[Octopus]

Thats a good i idea, thanks delta.

[jpsmith1cm]

Just a thought.

Not REAL familiar with them, but could you rig up a VFD to run the frequency high enough to operate that motor?

[mrhvacmechanic]

400 HZ is common on aircraft for some of their equipment. Especially radar.
Sometimes if you sit in the front of the aircraft you can hear a high pitch.
The electronics section has inverters that change 115 volts 60 HZ To 400HZ.
On the larger planes the HVAC is the largest system on the airplane. It runs off the combustion gas from inside the jet engine. No need for freons.

[jslimjeff]

Get a VFD and set it for 200V 400 HZ and you can run that device with no problem. Easy and cheap fix. Just size the VFD for the FLA o the device.
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