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  1. Takket2

    Oversized AHU & High humidity

    I didn't think so..... that's why I asked LOL. AHU is 2900 CFM, 5HP fan, designed for 3.04 brake horsepower.
  2. Takket2

    Oversized AHU & High humidity

    We have an AHU that was sized to cool a UPS system. The UPS is only half loaded and is not producting enough heat so the AHU is essentially oversized. The AHU has the room cooled but since it hardly has to run, we aren't dehumidifying. Tried closing the outdoor air damper to zero and still only...
  3. Takket2

    Pressure for piping risers

    This question came up when trying to size a compression tank for a heating hot water system. The boilers have a maximum operating pressure of 60 psi. The person sizing the compression tank asked me what the fill and maximum pressures were. So, i was going to tell him 60psi was the maximum...
  4. Takket2

    Calculating humidity increase

    I’ve got a heck of a situation and I’m not sure how to calculate it. I have a computer room that is set at 70 degrees. The computer room is 19838 square feet. On the north and south end of the mechanical room there are mechanical rooms, each with 4 AHUs that move about 30,000 CFM each (N+1)...
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