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Old 06-29-2015, 08:42 PM   #1
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Headloss calculation

I was wondering when accounting for headloss do you start at the pump or at the water line?

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Old 06-29-2015, 09:39 PM   #2
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That's a good question. I'm wondering that myself.
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Old 06-29-2015, 09:55 PM   #3
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Since water finds its own level I would guess the water level.
I would also guess the difference from pump to waterlevel is less head loss then 1 90 degree elbow(1 foot)?
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Old 06-30-2015, 12:47 PM   #4
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If both ends of the hose/pipe are submerged, the calculation is water level to water level. For canisters this means that the head loss is actually ZERO since both the suction & return lines are submerged and the canister itself is sealed.

The pump end is always calculated from the water level of it's container (pumps/intakes are always submerged, obviously). If the other end is not submerged than the calculation is to the end of the hose/pipe.
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Old 06-30-2015, 01:22 PM   #5
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Alright awesome thanks everyone for the comments

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Old 06-30-2015, 02:31 PM   #6
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Quote:
Originally Posted by jrc0528 View Post
If both ends of the hose/pipe are submerged, the calculation is water level to water level. For canisters this means that the head loss is actually ZERO since both the suction & return lines are submerged and the canister itself is sealed.

The pump end is always calculated from the water level of it's container (pumps/intakes are always submerged, obviously). If the other end is not submerged than the calculation is to the end of the hose/pipe.
That makes sense and goes along with what i was thinking.
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