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  1. 09-03-2017, 02:05 PM #1
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    ARIEL979
    ARIEL979 is offline Registered User Hey, I am new to : RE
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    control stepless screw compressors

    Hello
    I'm programing Carel controllers.
    I heed to program controller for screw compressors with steeples capacity like trane chhn06 etc.
    Because those compressors don’t have a feedback from the slide valve, the problem is to know what is the load (%) of the compressors.
    Current is not enough because it changes depending on high pressure and other parameters.
    Does someone have an idea how to make calculation or formula to consider current, high pressure, outdoor temp and maybe another parameters to calculate the compressor load (%)?
    Thank you
    Ariel
    Last edited by chemi-cool; 09-03-2017 at 02:30 PM.
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