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Recent content by cdwarmann

  1. cdwarmann

    HVAC exhaust air temperature?

    From an exhaust vent on the roof?
  2. cdwarmann

    HVAC exhaust air temperature?

    I'm wondering what the typical temperature range of a multi-story office building or hotel's HVAC exhaust air is. I’m also interested in the volumetric flow rate, but I assume that more widely varies depending on the size of the system. I'm specifically looking at 7 to 8-story buildings in a...
  3. cdwarmann

    Am I doing these head loss calculations correctly?

    So, from a practical standpoint, even if the resulting air pressure coming out of a nozzle is just at or near atmospheric pressure, it can still have enough flow and velocity to mix a 330-L water/algae bioreactor? I know that as the pipe size decreases, the flow velocity increases, but at what...
  4. cdwarmann

    Am I doing these head loss calculations correctly?

    http://pastebin.com/30M0vhzF I’ve been trying to calculate the head loss of a plastic tubing air flow system, and I’m getting a very very high number for head loss for the 3/4″ inch section. Using the same method for the 2.5″ section, I was only getting 4.6 mm H2O loss/meter. 3/4″ is at 1,400+...

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