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  1. #1
    Join Date
    Dec 2004
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    Weihai,China
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    hydraulic floor heating issue



    Hi Sirs
    I need to go further into the floor heating issue. hope experienced guy can give me some help. The key issue as follows:
    # what material tube is the most raliable type
    PEX\PB\PPR\etc?
    # is there the load calculation and pipe layout software for floor heating
    # if it's feasible for cooling at summer ?

    thanks in advance

    regards
    LC


    I hear...I forget;I see...I remember;I do...I understand

  2. #2
    Join Date
    Mar 2006
    Location
    dallas, texas
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    Re: hydraulic floor heating issue

    lc
    it has been some time but i use to design underfloor warming for Freezer jobs we did.
    I will look for the old data on flows and type of materials

    The flow rates were low as i recall
    The material was a plastic pipe 1 in diameter .

    if i find more i will send it to you
    We had some kind of calculation for BTU per ft as related to the pipe.

  3. #3
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    Dec 2004
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    Weihai,China
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    Re: hydraulic floor heating issue

    thank you for your kindness


    best regards
    LC
    I hear...I forget;I see...I remember;I do...I understand

  4. #4
    Join Date
    May 2006
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    USA
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    Re: hydraulic floor heating issue

    LC- Check out a site called HeatingHelp.com. It's run by Dan Holohan-one of the best writers/teachers in the hydronics industry. In a section of the site called the Library, you can find a link for a Wirsbo installation guide, as well as links to sites with Heat Loss calcs for radiant. Give it a look-you won't be disappointed!

  5. #5
    Join Date
    Mar 2002
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    Tehran
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    Wink Re: hydraulic floor heating issue

    pex-a is the most reliable choice .
    one of the famous company who produce under-floor heating pipe and has much experiences in design and installation this system is REHAU CO.(www.rehau.de).
    cooling although depends on your dew point temp. and your application and I think it dosnt get us more than 35% efficeincy.(have a pleasure with a wet floor!!)
    S.P

  6. #6
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    Nov 2006
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    sydney
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    Re: hydraulic floor heating issue

    Not sure about the technical side of things here but, last year I worked on the WW HQ site in Syd. They used 1/2 plastic pipes - lots of about 1m diameter spirals covering large floors of the atriums. They used heating and cooling.

  7. #7
    Join Date
    Jan 2006
    Location
    canada
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    Re: hydraulic floor heating issue

    Generally we use a calculation of about 7 watts / sqft.

    It is a polyethylene plastic tube, 1" diameter.

    Glycol is heated by a discharge line heat exchanger.

    You better have a refrigeration system that is running at least 20 hours per day or you will be looking at supplementary heat.

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