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Properly sized and operated airlift pump systems will reliably move water to minimize stratification even in 20A ponds. Their simplicity, low cost, and effectiveness makes airlift pumps e…Full description
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Calculations for an air
Enter data in green cells only Pumping rate Pipe diameter submergence lift % submergence cross-sectional area of pipe
12,000 gallon/day 2.00 inch 7.0 ft 1.5 ft 82%
gal/min
8.33
0.022 ft2
Pipe volume Pipe volume/cu.ft.
0.15 ft3 7.48 gallon
Vl (Flow rate) A (Pipe area) L (Lift) D (Pipe diameter) Lf (density of fluid) S (submergence) Lg (Gas density)
There are two major sections to this spre number. 2. On the right will calculate the maximum. This is a theoretical maximum it would be 33 gal/min
4.52E+04 5.50 5.23 5.15 0.01 0.00 5.77
I have entered my basic pumping needs i
The bottom, yellow cells show the CFM a at its maximum, and therefore, limit that ft3/min
The convention I follow is to enter data in Answer
Pressure
3.03
psi
If you enter a set of data where the air lif occurs, change the sizes or gallons to twe formulas complete properly.
This spreadsheet is built off other person the calculator on the right based on form Please give proper attribution.
The calculator on the right is adapted fro expressing the formulas from:
F.A. Zenz from "Explore the Potential of A
ations for an air lift assembly Calculate needed gals/day 500 gal/hr 12,000 gal/day
total length submergence pipe diameter water flow
Calculation of maximum air lift pump capacity 8.5 feet 259.08 cm feet of water 82 % 0.82 feet of rise 2 inches 5.08 cm 126.240 liter/min 33.352 gal/min 48,027.59
6.97 1.53 gal/day
optimal air flow range for these parameters 8% 116.89 liter/min 4.13 cfm 9% 115.82 liter/min 4.09 cfm pressure
3.02
PSI
o major sections to this spreadsheet. They fill two different niches. 1. on the left figures from a known, desired gal/day On the right will calculate the maximum capacity for a given scenario. There are a lot of variables that might lower that his is a theoretical maximum. It will not be grossly in error. My test demonstrated a flow of 30 gal/min and the calculator said
ed my basic pumping needs in the calculators.
yellow cells show the CFM and the pressure needed to overcome the head. An air pump would need to match this and not um, and therefore, limit that would make it prone to failure.
ion I follow is to enter data in green cells and the formulas are completed in other colored cells.
a set of data where the air lift assembly will not work, there will be odd characters appear within the calculations. If this ge the sizes or gallons to tweak your desired assembly. For instance, if a 2" pipe will not work, then try a 3" and see if the mplete properly.
heet is built off other persons' work . It must not be distributed for profit. It is for education and design purposes only. I built or on the right based on formulas found on an engineer ing site for air lift assemblies.
proper attribution.
or on the right is adapted from one found on http://www.airliftpump.com/ap_calc.htm by Dr. Sam Kondo, Ph.D. who is he formulas from:
m "Explore the Potential of Air-lift Pumps and Multiphase", Chemical Engineering Progress, Aug., 1993
