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  1. #1
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    Dual temperature refrigeration



    Is there such a patented refrigation system which can operate a storage room either as a cold room (+5 deg C) or as a freezer (-18 deg C) at the touch of a button. I can think of different ways of organising a refrigeration system to do this, but can one buy a system already designed for that purpose ?

    Harry



  2. #2
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    Re: Dual temperature refrigeration

    Harry who,
    money can do anything so long as you are prepared to spend.
    Did a couple for the AirForce here, worked sweet as, expensive though.
    Don't now about patents, as is regular refrigeration design, sorry bud. Check out regular transport refrig., systems and similar. Flick a switch between fresh or frozen.
    magoo

  3. #3
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    Re: Dual temperature refrigeration

    Yes there are systems ready to use type made by Zanotti/ Technoblock etc & we have used them as well.

  4. #4
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Re: Dual temperature refrigeration

    If you are concerned about patents then you should check with the Patent Office also.
    Brian - Newton Abbot, Devon, UK
    Retired March 2015

  5. #5
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    Re: Dual temperature refrigeration

    Fairly common in supermarkets using "dual temp" cases. The switch energizes a bypass solenoid around an EPR and allows the case to run at compressor suction pressure (low temp). Release the bypass and the EPR will modulate and hold the pressure up in the evaporator and increase its SST.

  6. #6
    mefleh's Avatar
    mefleh Guest

    Re: Dual temperature refrigeration

    i guess there no problem of opert condensing unit for both +5 or -18 c as far there is heater inside the evaporatore and time for defrost should be evry 6 working hours

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