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Glycol loop acceptable heat gain?

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  • Glycol loop acceptable heat gain?

    What would be considered an acceptable heat gain in your glycol loop. In the glycol reservoir we are at 25-26F. By the time the header reaches the fermenters, the temp is up to 33-34F. Like so others, we cannot crash our fermenters the past few weeks with the heat and humidity so high.

  • #2
    are your headers insulated?

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    • #3
      The least amount of heat gain in your lines possible is the most acceptable. Insulate them so they are as nearly air-tight as possible, with at least 1" of closed-cell foam. Use contact cement and insulation tape to seal them. Heat gain from condensation is very significant.
      Timm Turrentine

      Brewerywright,
      Terminal Gravity Brewing,
      Enterprise. Oregon.

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      • #4
        Hi,
        If you have a well insulated piping system you should not see any heat gain.
        With that heat gain you loose a lot of energy and it will cost you a lot of money each month to run your system. That will be less profit on your beers.
        For example if we would install 400 ft. of COOL-FIT ABS Plus header piping in 3" diameter and we would pump 119 GPM of 25 F Propylene glycol with a concentration of 35% through this system and our ambient temperature would be 104 F then our media temperature in the end of the 400 ft. would be 25.16 F.
        So it is very important to install a well insulated piping system because the cost for that is only once but if you try save so money up front and take some shortcuts you will pay for it every month and it will end up costing you way more money in the end.

        Please don't hesitate to contact me if you have any questions

        Cheers!

        Dan

        Dan Strömberg
        Cooling Market Segment Manager
        Georg Fischer LLC
        Phone: +1 714 368 4196
        Fax: +1 714 368 4197
        Mobile: +1 951 642 2339
        Dan.Stromberg@georgfischer.com

        GF Piping Systems
        9271 Jeronimo Rd., Irvine, CA. 92618
        United States
        GF Piping Systems is the leading flow solutions provider across the world. We enable the safe and sustainable transport of fluids. Our business is driven by maintaining industry-leading sustainability levels, innovating through digitally enabled solutions, and investing in a culture built on performance, learning, and caring.

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        • #5
          Def check your pipe insulation. The thickness of your pipe insulation depends on material the pipe is made of, the temp of the liquid going thru the pipe, and the extremes of the ambient temp in the surrounding area. I have spent the last two years replacing old moldy half inch insulation from our header. Two problems, the insulation was not thick enough, and was not sealed near well enough for the humidity we have in the Ohio Valley.
          Joel Halbleib
          Partner / Zymurgist
          Hive and Barrel Meadery
          6302 Old La Grange Rd
          Crestwood, KY
          www.hiveandbarrel.com

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          • #6
            The header is inulated...ish. Definitely could use improvement. I'm certain this is where the heat gain is from. Thank you for the replies

            Comment


            • #7
              What is the diameter of your cold glycol header? I've seen headers as small as 3/4" in use, which is another cause of excess heating. The larger the diameter, within reason, the lower the surface area to volume, making it much easier to insulate.
              Timm Turrentine

              Brewerywright,
              Terminal Gravity Brewing,
              Enterprise. Oregon.

              Comment

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