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Thread: Precision AC

  1. #1
    iiternalfire's Avatar
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    Smile Precision AC



    What exactly is precision AC technology?
    How different is it from conventional window ACs?
    Where is it required?



  2. #2
    Brian_UK's Avatar
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    Re: Precision AC

    I suppose that is what we would call "Close Control" systems.

    To provide close-control air conditioning you have to control both temperature and humidity levels.

    To accomplish this you often have to cool the air to reduce the humidity, then re-heat it so that the temperature is comfortable, then put more water vapour into the air to return the humidity back to acceptable levels.
    Last edited by Brian_UK; 22-05-2009 at 11:28 PM.
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  3. #3
    sourabhs's Avatar
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    Re: Precision AC

    Precision cooling is all about sensible cooling. it provides about 95% sensible cooling. it is manily used for electronic cooling such as datacenter, telecom units,etc

  4. #4
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    Re: Precision AC

    how can we calculate total cooling capacity & sensible cooling capacity of the unit. Is there any formula for calculating this?

  5. #5
    Volander's Avatar
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    Re: Precision AC

    It depends of size of the unit, coil temperature, room temperature and relative humidity in the room. For standard conditions % hum(50% or 40%) and room temp (Db 24C) you may find in technical manual of any manufacturer of close control systems.

  6. #6
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    Re: Precision AC

    normally close control units use EXV or TXV?

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    Re: Precision AC

    normally CRAC's use TXV's
    EXV's are available as an option for most manufacturers

  8. #8
    dedi sunardi's Avatar
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    Re: Precision AC

    hi everybody, precisian ac is provide for utility cooling not for human comfort, its maintain temperatur and humidity so precisian.depend on setting utility.

  9. #9
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    Re: Precision AC

    Precision air-conditioning systems regulate temperature and humidity for sensitive technology.
    Its continuous operation reliably ensures the high availability of computer systems.

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