Am I doing these head loss calculations correctly?
Am I doing these head loss calculations correctly?
(OP)
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+. I'm ultimately trying to determine the necessary size blower to sufficiently mix algae bioreactors. I know I still need to account for all the openings, but I want to get this part down first.
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+. I'm ultimately trying to determine the necessary size blower to sufficiently mix algae bioreactors. I know I still need to account for all the openings, but I want to get this part down first.





RE: Am I doing these head loss calculations correctly?
With such a large change in diameter there are other things at play, but the smaller tube for the same flowrate will be much much higher pressure drop.
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RE: Am I doing these head loss calculations correctly?
Oh, I should also note that the pipe opening is 0.6 m below the surface of the water in each bioreactor, so I think there's roughly 600 mm H2O back pressure as well.