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Thread: Rotary dual-evap : 2*GPU or CPU+GPU

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  1. #1
    -100c Club Member
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    Mar 2005
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    Poland
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    Rotary dual-evap : 2*GPU or CPU+GPU

    Hi

    It's simple dual evaporator unit, using one rotary compressor, and captubes as a expansion valves. No heat-exchangers . It has been made for some OC sesions (which are planned for future) .
    I've used one "CPU" evaporator + one "GPU" evaporator, to make possible using it on SLI configurations or as a CPU+GPU cooler (just by swap enclosure on "CPU" evap) .

    SPECS :

    compressor: Daikin YZG-22RY1T1 (rotary)
    evaps : piotres's custom CPU + custom made GPU evaps
    expansion valves: 2* 0.8 mm captubes
    condenser:2 row, alu-cu, cooled by 2* Sanyo 120mm fan + 2* NBM 120mm, all 4 for 12V
    refrigerant: R410a & R507 blend
    base: Chipboard baseplate 40 x 30 cm, painted matt black
    others: High side gauge mounted on condensor's top





    Braided suction lines, both around 100 cm long .



    Suction sleeve with white stripe - I like it very much .





    1st run ...sorry for not nice looking old insulation on suction accumulator .







    No load final temperatures .



    CPU evap 225W / GPU evap = 200W / Sum = 425 W

    Around -33*C on both evaporators .



    High side pressure with final charge during no load.

    Regards
    Peter
    Last edited by piotres; 04-29-2007 at 04:39 AM.

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