Some guidelines for sizing airlift pumps for aquaponics.
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- เผยแพร่เมื่อ 27 ธ.ค. 2015
- The physics of airlift pumps is very complicated, so it is necessary to do trial and error with a variety of pipe sizes to find the best one for your application. This is part of that work, with results that will work for some people. A read of my pulser pump notebook at goo.gl/photos/hFiTuWMY1TUTHpWy9 might also help.
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Hi Brian
Thank you for your work and time spent on this project, you are very kind man by sharing this.
I would like to know if its possible to achieve 1 litre per 5 minutes with a submergence of up to 800mm and total hight for water to be pumped at 7 m, the total length for water to travel 15 m, also would like to use solar power air pump.
Is this possible at all ?
Very interesting Brian! And I appreciate your understanding of the testing methods. I see your pump is rated at 11 watts, do you have all 4 of the outputs being used?
+Jon Boyd Thanks Jon, yes, in this case I did. It is supposed to be 14 liters per minute of air when all are connected but the second time, halfway through the video, I messed up, I connected 3 into one little airline before they went into the irrigation tubing. (This almost certainly reduced the amount of air because one little airline tube was too small to take all that air) from 3 outlets. First time, they were 2 and 2 which made it easier to pump air. Some of the other pumps that people use have better liters per watt.
Note that I have done many other tests. I usually pump with smaller diameter tubing. I achieved the best efficiency, lift to submergence ratio and pumping heights with 3/16" diameter tubing. (4.5 mm tubing). But nobody is going to use that in their systems! Because you would need a bundle of at least 14 of those tubes to replace one 17 mm pipe. And each tube in the bundle would definitely need a constriction and a tap to adjust the air going in to it. So probably, once I finish doing figures for popular heights and submergences, people will start choosing better pipe sizes for their systems. 17 mm might be king for high submergence. Where you pump the air 6 or 8 ft deep, but other pipe sizes will be better for lower submergences.
I wonder what submergence and heights needed are most common? Thanks Brian
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Hi, I'm from Brazil. I did not understand this system well. I would like to know if this system works without electric power.
Rodriguesaerogenerador Humberto it uses an airpump
Thank you
Hi Brian, what are the pumps your using with the airstones?
This one was with an Aquascape pondair 4 and the other tests (in another video) were with (an old) Marina 200. I also use some direct connected solar powered dc brushless air pumps to pump air (but not in these experiments) because their output is variable.
Thanks Brian.
Hello from Los Angeles! Thank you very much for this informative video and especially for your intermittent write ups.
I’m wondering why you have the 90 degree elbow and additional length on the bottom?
Oh, hi, Eric, it's hard to explain exactly the reason for the 90 degree bend. But, I have some videos about "airlift in a bucket" and "constriction airlift pumps" probably in a playlist, that show that there is a significant performance boost with the 90 degree angle. (ideally, the angle would be slightly greater than 90 degrees but you can't buy that in the store) I can get back to you later, (if you remind me) to give you a fuller explanation. Best of luck, Brian
@@Brians-Easy-Low-Tech-Solutions wow I will check out your other videos, such good information and hard to find!!
I have in mind a slightly larger system for circulating a pond. Thanks to your videos I’m considering using two different diameter pipes depending on the season and lift needed since the pond level varies.
I’m thinking 2” for when the pond is full height, and maybe 1” when the pond is lower and ~10” of lift is needed. I’m going for maximum flow. I wonder how much difference the restrictions would make on a slightly larger scale, I imagine it would be similar.
Another question is where the air enters the system, all it way in the corner of the elbow? And is there a diffuser or does it come straight out of the air line?
Thank you so much for your work!! I will keep looking through your videos!
@@dawinksta How high are you pumping? (My videos were really for testing what is the max height for certain pipe sizes and submergences). If you are only pumping a foot or 2, it can be simpler.
Hi - thanks for the video. I don't really understand what is going on here, so forgive me for jumping right to the conclusion. Do you feel that airlift pumps can be competitive with other water powered pumps like spiral pumps and ram pumps? Competitive in the sense of cost per volume of water delivered to a usable height using flowing water. If so, can I talk you into starting a discussion thread on the topic in the facebook group? Thanks - Dave from Water Powered Pumps public Facebook Group:
facebook.com/groups/240458583255303/