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  1. #1
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    cooling load calculation formulas


    dear friends,
    can anybody pls provide me the formulas for cooling load calculation because iam trying to estimate the load for a chiller room with 9 m^2 area with room temperature 5 degree celcius wherereas ambient temp is 31 degree celsius i know the formula
    Q = AU (T1 - T2) but if i substitute it is giving wrong result ill be thankful if you provide the set of formulas with units and examples



  2. #2
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    Re: cooling load calculation formulas

    Quote Originally Posted by balaji
    Q = AU (T1 - T2) but if i substitute it is giving wrong result
    How can this give the wrong result, if you use the correct information?

    What are you comparing your answer to with the above equation?

    This equation only provides the heat loss or heat gain through a wall/roof/floor.

    You also have to include the product cooling load, motor & light heat gain, air infiltration, etc.
    If all else fails, ask for help.


  3. #3
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    Re: cooling load calculation formulas

    Thanks For Your Reply Can You Explain Wth Example ,is This The Only Formula Or Any Other Pls I Doubted May Be I Made Mistakes In Units Pls Give An Example Or Solve For The Datas I Given In Last Post

  4. #4
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    Re: cooling load calculation formulas

    If you are not familliar with calculating heat loads for coldrooms, such as fabric gains, electrical inputs, product load (sensible Latent and respirative) , occupancy gains, running times, defrost inputs etc then it's probably better that you use a software program.

    Go to this site download their coolpack software ..

    http://www.et.web.mek.dtu.dk/Coolpack/UK/About.html

    go to download ... Run the sotfware ...go to cooltools design
    open cooling demand

    You will find an easy to use coldroom load calculation program. Which should help you. If you still wish to do it long hand then use the software as a check.
    Reality is an elusion created by alcohol deficiency. Quaff and enjoy. [Yorkshire, UK]

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    Re: cooling load calculation formulas

    hai balaji
    i am arul from bangalore.call me once.

    regards
    arul
    Last edited by frank; 23-09-2008 at 09:21 PM.

  6. #6
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    Re: cooling load calculation formulas

    hi arul i cant recognise you and there is no contact number how to call you

  7. #7
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    Re: cooling load calculation formulas

    Quote Originally Posted by US Iceman View Post
    How can this give the wrong result, if you use the correct information?

    What are you comparing your answer to with the above equation?

    This equation only provides the heat loss or heat gain through a wall/roof/floor.

    You also have to include the product cooling load, motor & light heat gain, air infiltration, etc.
    i have a area of 2000 mts pls send me calculation of cooling capacity.

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