Older deep freeze low efficiency for electronic circuit testing.

Older deep freeze low efficiency for electronic circuit testing.

Results 1 to 2 of 2

Thread: Older deep freeze low efficiency for electronic circuit testing.

  1. #1
    Join Date
    Jun 2018
    Posts
    1

    Default Older deep freeze low efficiency for electronic circuit testing.

    Hi, this is not a repair question, more of a what brand and model to purchase question.

    I’m an electrical engineer in need of a cold chamber for electronic circuit testing and would like to modify a used deep freeze for this task. Industrial heat/cold chambers exist for this purpose, however they are very expensive. Some on a budget are using incubator chambers that can cool down to about 2C, however only when not dissipating any significant heat.

    I have little knowledge of refrigeration however I’m comfortable taking anything apart and modifying as required.

    I’m looking for an older model about 1-3’ cubed that is capable of cooling to ideally -40C (if I bypass the original thermostat and retrofit a custom thermostat). Power dissipated by the DUT (device under test) would be less than 25W, often much less.

    I would imagine the newer high efficiency models would be the opposite of what I’m looking for, more likely and older “over engineered” model that could cool quickly instead of slowly and efficiently would be a better candidate.

    Can anyone recommend brands and models that would be a good candidate?

  2. #2
    Join Date
    Feb 2012
    Location
    Canada
    Posts
    2,628

    Default

    Hi,

    I’m looking for an older model about 1-3’ cubed
    1 to 3 cuft?

    Chest freezers started at 4(rare) - 5(more common) cuft and smallest upright that I have seen is 5 cuft.

    capable of cooling to ideally -40C
    That may be hard as most where designed to get to -18ºC which is 0ºF. With the control bypassed it will definitely get colder but I would be unsure if any could maintain -40ºC. AN chest freezer might be best because the cold will stay in the cabinet even with the lid open while an uprite style the cold air falls out when the door is opened.

    WCWoods is now out of business but their Made in Canada and USA models where some of the best freezers in the world!

    This is a 5 cuft one...

    Older deep freeze low efficiency for electronic circuit testing.-cf05wl-jpg Woods CF05W 5.3 cu. ft. Chest Freezer with Manual Defrost

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •