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Thread: Building my first Single Stage

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  1. #5
    Registered User
    Join Date
    Jun 2007
    Posts
    86
    Βecause of high ambient temps (37 C) and room temperature (30 C) efficiency of Single Stage suffers.

    Without load idles at -32.5 C
    High Pressure at 275psi / 48 C

    Suction freezes till compressor



    So I tried to cool the high pressure vapor with a chiller 1/8HP. I used the desuperheater coil to cool the 2 stage.

    The temp now at evaporator is -47.5
    High pressure is 180psi / 32 C

    Suction doesn't freeze till compressor.

    My question is, at that situation, I need to add refridgerant?



    Last edited by Obijuan83; 07-09-2019 at 01:13 AM.

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