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So I was at work and I heard what sounded like occasional dripping above the ceiling.

mattmia2mattmia2 Member Posts: 1,186
I looked above the ceiling and saw this:



  • SteamheadSteamhead Member Posts: 13,768
    Some sort of radiant cooling?
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
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    Baltimore, MD (USA) and consulting anywhere.
  • CanuckerCanucker Member Posts: 603
    Is it a chilled beam set up? What dehumidifies the air and is it working properly?
    You can have it good, fast or cheap. Pick two
  • SuperTechSuperTech Member Posts: 1,303
    Lol, yeah I'd say a little bit of pipe insulation would go a long way toward stopping the dripping and pipe sweating.
  • hot_rodhot_rod Member Posts: 13,188
    uninsulated, but at least labeled :D
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • mattmia2mattmia2 Member Posts: 1,186
    Chilled beam. They are running the air handlers about 2 hours a day to conserve energy while the buildings are mostly shut down so it isn't getting as much chilled, dehumidified air as it was designed for. Still should have been insulated. I'm sure there was a meeting.
  • hot_rodhot_rod Member Posts: 13,188
    Looks new? Has it gone through an entire cooling season?
    Dewpoint controls?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • mattmia2mattmia2 Member Posts: 1,186
    Building was built in 1980, was renovated 6 or 7 years ago. It is fine when they run the air handlers on the normal schedule. Now that they are running them for only a few hours a day to save money when the building is minimally occupied and it has been warm and rainy for the past few days it has begun raining indoors.
  • hot_rodhot_rod Member Posts: 13,188
    Yeah, not a great operating condition. Regardless you would think the pipes would be insulated in a potentially warm ceiling space like that?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • mattmia2mattmia2 Member Posts: 1,186
    I think moron was what I said when I stuck my head in the ceiling and saw what was happening.

    Apparently that building attracts experiments that look good on paper but don't work out in practice. When the building was new it only had chilled air distributed with no reheat, it only had radiation around the perimeter. The theory was that if you make up for the heat loss at the exterior you don't need to add heat anywhere else. It always had cold spots in the winter before the renovation.
  • EdTheHeaterManEdTheHeaterMan Member Posts: 480
    edited May 21
    the insulation guy also sells drop ceilings. So a little condensation might get me a new ceiling job in a few years. >:)
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