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  1. #1
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    CapTube efficiency loss at high temperatures



    Good day everyone .

    Just wondering if any one has any idea, or data as to the percentage efficiency loss of a Captube refrigerant control device that is originally designed to operate at 72 F . Put that same system in a 90 F environment causing the condensing temperatures to rise accordingly , therefore increasing the bubble length in the Captube . Any one have any idea as to the percentage of loss of efficiency in such a scenario? Or where I could find any data regarding this .

    Regards



  2. #2
    Join Date
    Mar 2016
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    Re: CapTube efficiency loss at high temperatures

    Thanks for the reply .

    I understand that point but as temperatures rise and you get less sub-cooling , flashing occurs sooner in the tube which causes more restriction. The system will still operate like this but at reduced efficiency.

    https://www.achrnews.com/articles/97...e-of-cap-tubes

    And this article which got me thinking.

    https://icemeister.net/backroom/wp-c...ed-Version.pdf

    Short of building two identical systems set up for maximum efficiencies at 72F and then raising the ambient temperature , one with a captube and one with a TXV and measuring the energy use , if there was already some data out there as to a efficiency percentage loss.

    Regards

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