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Thread: Air Throw

  1. #1
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    Air Throw



    Hi all,

    How to calculate air throw from fan(s) ??



  2. #2
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    Re: Air Throw

    The easiest and best way is to measure it.

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    Re: Air Throw

    You need an Annemometer & the rest is easy

  4. #4
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    Re: Air Throw

    Sorry, I mean mathematically...

  5. #5
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    Re: Air Throw

    Sorry, no idea.

    I always ask the manufacturer for those sorts of details.

    Otherwise it is a case of measuring the airflow yourself.
    Brian - Newton Abbot, Devon, UK
    Retired March 2015

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    Re: Air Throw

    The short answer is yes there is a formula that can be used , but it requires a fair understanding of what you want to achieve , in what context it is to be used and the basic design of the air distribution system. There are many factors that effect this , temperature TD between inlet air are general area. Ceiling effect, geometry of the outlet, i.e. square round grill louver etc.
    I have used the formula in the past to approximate what I am attempting to achieve and normally in an internal air con. design to determine entrainment and flow rates in the occupied zones, but in the final wash up of the design selection I always use manufactures published data and select or specify accordingly. I haven't got the formula in front of me but could dig it out if you want me to or someone else may have it at hand.

  7. #7
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    Re: Air Throw

    Thanks guys.
    John Hunter, u don't have to dig it out. But thanks anyway.

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