anyone want a new compressor setup for their comp?

i found a:

This item is a Revco Scientific Ultra Low Temperature Upright Freezer - Elite Series, model number ULT1786-5-D12. Revco laboratory products are designed for life science, industrial, and hospital/clinical applications worldwide. Elite Series Operating Temperature: -86 degrees C, Range -40 degrees C to -86 degrees C. Air-cooled refrigeration systems are engineered to maintain design temperatures in warm 32 C (+90 F degrees), ambient conditions, Refrigeration System: Exclusive Legaci system with air-cooled compressor(s), 1 HP, CFC-free refrigerants, DuPont Suva 95 low-stage refrigerants, Downfeed evaporator for most, efficient refrigerant flow, High-capacity air-cooled condenser, with dual condenser fans, aerodynamically shaped fan blades, Washable condenser filter keeps fins, free of dust to maintain peak cooling efficiency; no tools required for removal. Control System: Microprocessor control system with touchpad data entry and digital display of all functions, Key-operated switch for main power and alarm, Independent operating temperature and high/low limit alarm functions with factory-set defaults for quick start-up, all setpoints adjustable in 1 degree C increments, Electrical System, Automatic voltage boost compensates, for low voltage and brownout conditions, On-board power monitoring with digital readout of incoming line voltage.

and i think it would be perfect for using for a phase change system or maybe a water chiller

linky

have fun

~Magick_Man~

I want one so bad for my chiller to mod to my PC-75 (if nocturnal sells it to me )

man with a few m ods that could get down to well below -90 at evap temps...man now i want one...

sweet googly moogly. Does it get to -85 with only one gas? Do any of the phase change guys know of there is even a gas that will do this? As far as I knew you needed at least a 2 stage cascade to get into those ranges.

It would have to be a cascade, maybe an auto-cascade if its only using one compressor.

Zork said:

It would have to be a cascade, maybe an auto-cascade if its only using one compressor.

Click to expand...

How do thy split the two refrigerants in a auto-cascade system?

better yet, what is an auto cascade system?

matttheniceguy said:

better yet, what is an auto cascade system?

Click to expand...

its two refigents sharing the same comprssor with separet evop and cond loops.

HEY now that sounds sweet.....i guess i will have to look into that some more.....

lclark2074 is right, the two refrigerants leave the compressor as a compressed mixture, one freon is the low stage one is the high stage. While the mixture passes through the first condensor the first stage gas condenses to a liquid and the second stage gas stays a gas. This now liquid/gas mixture travels to the first evaporator where the first stage gas now absorbs the heat and condenses the second stage gas, now the second stage gas travels to the second evap (one used to cool the fridge/cpu) and it absorbs the heat. Now this is a very simple explanation, alot more goes into designing one, and one that functions well, but that should help you get the genarl idea.