this is very interresting! i use air lift pumps in aquariums every day, but never thought about them functioning like this, because i use them under very different physical conditions,that you didnt even mention here. in an aquarium the lift tube is usually completely submerged. so no actual lifting force is required, and the kinetic energy from the buoyant bubbles, dragging the column of water up the tube, takes over. which is far more efficient, than having to make the water buoyant. i observed, that with every centimeter of lift above the surface the efficiency and flow rate decrese quite a lot. ergo: great for submerged circulation pumps, not so great for anything else.
+Cuda FX Thank you for your comment. Even though I see those aquarium pumps in local Chinese restaurant, it did not occurred to me that I should mention about that. Since the height of the aquarium is so small, the speed of the air bubbles might play major role to pump the water. I say might, because I do not know air bubble speeds in the aquarium. However even in that situation the water rises due to reduced buoyancy of the water in the tube. Your observation is correct, when you lift the water tube above the water level, say 1 centimeter, flow rate should decrease. To get the same flow rate before the raised level, the bottom of water tube should increase substantially, maybe 7 or 8 centimeters. But of course there is no room to extend the tube below the bottom of the aquarium. As I stated in the video, application of these pumps are very limited, as you also mentioned.
you're welcome. your video really brought up an aspect i never thought about. there are two forces at work in an airlift pump. i find funny, how each of us only concidered one before. the buoyancy is a static force and determines the lift height, even in tube with no flow, as your video illustrated. as soon as (and only if) an outlet is lower than the lift height of the pump, and the water gets flowing, the kinetic drag of the bubbles takes effect. btw, the bubbles raise with an estimated 20cm/sec. in reality the amount of air it takes to operate the submerged circulation pump of a "double sponge filter", would only lift the water 2-4cm above the surface, but moves easily about a liter per minute, and could be adjusted upwards to 3-5 times that. all with very little power comsumption, a 5W air pump can drive 4 of said filters, each enough for a small 20-50l aquarium. electric pumps would use 3-5W per tank. ps: in aquaristics air lift pumps are mostly used for lift heights of a few centimeters. above that they tend to be quite noisy
+Cuda FX Thanks Cuda, The information you provided is very informative, especially speed of the bubbles in the tube and power consumption of the pumps.
@@mekanizmalar May I ask: if a siphon to work put in the top tank. And then the siphon tube put all the way to the floor, would that help? Then to another pipe going up to the top of the tank, with the aerator in the connected second pipe. This would give more length of pipe for the air to travel. There by lifting the water much higher. Also reducing the second pipe half way up may help? Please tell me your thoughts.
I have made Air Lift pumps before and this explanation is not how they work, it may be how some other pumps work but not the Air Lift pump. The short explanation is that air is pumped down an Air Tube on the outside, not the inside of the Lift Tube and it curves at the bottom of the Lift Tube and goes up inside it a few inches. When air is pumped into the Lift Tube it rises and all of the separate bubbles form a single bubble which pushes the water column above it up and out of the lift tube. As the plug of air rises the water column pressure above it drops because water is exiting at the top of the lift tube and the air plug expands. Continuous cycle. That's how it works, if you build one be sure to use clear tubing so that you can watch the process, it is very simple and elegant.
+George Crabtree Thank you for your visit and nice explanation of the airlift pump process. I think there is not a difference in the process whether air comes from outside of the main pipe or inside from it, the effect would be the same. The way you described air lift pump is well suited if you use the airlift pump in open wells, However if you want to get water from underground, than a hole must be drilled, in that case the way I described would be more advantageous, since you are drilling only one whole.
I've been wondering which method to introduce air is better myself. Run an air pipe inside the discharge pipe , or an air line on the outside. With the pipe inside , it obviously cuts down the water mix volume making it easier to lift a smaller weight per linear foot. But does the air bubble suffer efficiency having to wrap around the inner air pipe? It would seem it would because the water could sluff off one side , and most likely you couldn't ensure a uniform column for it to travel up. Hence just making a smaller discharge pipe would combat the watermix weight per ft that an inner pipe would gain you. And if the water inlet being constricted by the air line at the bottom is worrysome. You could just make a larger bell end for where the air line is introduced on up to about a foot past it's outlet. The other advantage of the airline outside the discharge pipe. Would be that you could use a hose instead of a rigid pipe that would be necessary if the air pipe were inside the discharge pipe. Not to mention installation would definitely be easier. Plus what about gate valves for keeping a prime ? No way to put those in with an inner pipe. However I'm not really sure if gate valves will cut the efficiency to far? Air lift systems always discharge water in surges. Because once a certain amount of air comes out , the air line needs to build it's pressure again to emit another bubble. Little bit of the same principal of a ram pump.
I'm afraid your argument is not scientific therefore not a valid counterpoint. Adding air to the water column, independent of bubble size or whether the tube is outside or inside, reduces the weight of the water in the column, thus Archimedes principle. Quod erat demonstradum. If you pull on a rock from the "North" or push on a rock from the "South" the net force on the rock is ultimately the same... the design is what's different.
Pretty good explanation of airlift pumps, but would be better if you provided a few examples of what applications they are good for, and some where they aren't.
I have seen an increased interest in the subject of air and water transfer. An interesting input has been contributed by Glen Martinez from Hawaii. He donstrates many uses and applications that consume very low wattages while producing adequate lift or head. Quite a study to see in action.
mekanizmalar, A nice presentation to convince that airlift is not convenient? Air bubbles act as a piston rising water in the tube. (of course, this does not avoid the Arquimedes principle you are NICELY exposing).
thank you for fundamentally explaining this concept. there should be more videos like yours for people who learn like I do, where we need to see it from the beginning wtih varying examples and numbers. Too many youtube videos explain concepts so vaguely that I don't see how people understand what's going on, but people must be smarter than me to get it.
+danh le Thank you for your support and nice comment. You are right about most of the TH-cam videos, they are not well done. However there are some really good videos out there..
+mekanizmalar I've gotten a+'s all throughout school without actually understanding too much, just plugging and chugging formulas. if u were my teacher i think i could learn physics and engineering very easily! do you have any recommended channels to watch who have great explanations?
+danh le Thank you for your compliment, I really appreciate it. I am so preoccupied with my animations, I do not have time to look for other channel. However I like Mr. Thang's animations, his TH-cam user name is thang010146.
I would add a correction to your video, airlift pumps are very inefficient at high head applications, in cases where it is not having to lift the water to great heights they are more efficient then any mechanical water pump I have ever seen. As I read it the cutoff point where airlifts start to become less efficient is around 24-30 inches of head limiting its practical application to things like aquaponics systems or wastewater treatment where high volumes of water are needed with a low head and additional oxygen is an added benefit.
La semana que viene instalaré un pequeño sistema de tratamiento de aguas residuales one2clean. Y ahora he comprendido cómo funciona la bomba del mamut. ¡Muchas gracias!
I made one in my 40 meters deep well and I am satisfied with results but I think you should have enough psi and cfm to get water out I am using 250 lpm 10 bar 50l air tank and getting 1200 litter ph with 1in pipe I
Thank you for your visit and comment. Yes you are right, higher you want to pump water, higher the air pressure should be, Since your well is 40 meter, it should be OK. Here is a question, have you try 8 bar pressure? If you did, what was flow rate rate of the water?
This is an excellent sistem , for a deep 120 meters well for example , you need a complicated mechanical device and a spensive great pump wich suffer abrasion wear to do the same work you can do with a simple air compressor and a pair of pipes whith a venturi on the extreme wich you can easily make at home.
In my area water level is about 80 feet under the ground so how much i dig earth and how much long and thick pipe i use to take water and what capacity of air pump i use
Hi makenizmalar, thank you for your informative video. I see the basic principles, but could you make a video that expands on some of the (limited) applications for the air-lift pump? Ahh I see in the comments that I'm not the only one who wants this. Not a jab at your great video, just the limitation of my imagination. Thanks again.
I am confused. I thought water was displaced according to MASS, not weight. A cu. ft. of lead weighs more than a cu. ft. of water. So you're saying if I drop a 10lb. block of lead, into a brimfull tub of water that 10lb. of water will overflow? Wrong!!!!!!!
@@RaulRamirez-pg3sw I think the question left out whether or not it's acceptable for the lifted water to be hot. Will steam be able to lift cold well water?
Dear Masey, Thank you for your visit and comment. However, if you believe presentation poor than explain it better in your comment so that we all learn something. Saying poor not exactable, you are making us to wonder how could it be much better. Please enlighten us.
this is very interresting! i use air lift pumps in aquariums every day, but never thought about them functioning like this, because i use them under very different physical conditions,that you didnt even mention here.
in an aquarium the lift tube is usually completely submerged. so no actual lifting force is required, and the kinetic energy from the buoyant bubbles, dragging the column of water up the tube, takes over. which is far more efficient, than having to make the water buoyant. i observed, that with every centimeter of lift above the surface the efficiency and flow rate decrese quite a lot.
ergo: great for submerged circulation pumps, not so great for anything else.
+Cuda FX Thank you for your comment. Even though I see those aquarium pumps in local Chinese restaurant, it did not occurred to me that I should mention about that.
Since the height of the aquarium is so small, the speed of the air bubbles might play major role to pump the water. I say might, because I do not know air bubble speeds in the aquarium. However even in that situation the water rises due to reduced buoyancy of the water in the tube.
Your observation is correct, when you lift the water tube above the water level, say 1 centimeter, flow rate should decrease. To get the same flow rate before the raised level, the bottom of water tube should increase substantially, maybe 7 or 8 centimeters. But of course there is no room to extend the tube below the bottom of the aquarium.
As I stated in the video, application of these pumps are very limited, as you also mentioned.
you're welcome. your video really brought up an aspect i never thought about.
there are two forces at work in an airlift pump. i find funny, how each of us only concidered one before.
the buoyancy is a static force and determines the lift height, even in tube with no flow, as your video illustrated.
as soon as (and only if) an outlet is lower than the lift height of the pump, and the water gets flowing, the kinetic drag of the bubbles takes effect. btw, the bubbles raise with an estimated 20cm/sec.
in reality the amount of air it takes to operate the submerged circulation pump of a "double sponge filter", would only lift the water 2-4cm above the surface, but moves easily about a liter per minute, and could be adjusted upwards to 3-5 times that. all with very little power comsumption, a 5W air pump can drive 4 of said filters, each enough for a small 20-50l aquarium. electric pumps would use 3-5W per tank.
ps: in aquaristics air lift pumps are mostly used for lift heights of a few centimeters. above that they tend to be quite noisy
+Cuda FX Thanks Cuda, The information you provided is very informative, especially speed of the bubbles in the tube and power consumption of the pumps.
@@mekanizmalar
May I ask: if a siphon to work put in the top tank. And then the siphon tube put all the way to the floor, would that help?
Then to another pipe going up to the top of the tank, with the aerator in the connected second pipe. This would give more length of pipe for the air to travel. There by lifting the water much higher.
Also reducing the second pipe half way up may help?
Please tell me your thoughts.
I have made Air Lift pumps before and this explanation is not how they work, it may be how some other pumps work but not the Air Lift pump. The short explanation is that air is pumped down an Air Tube on the outside, not the inside of the Lift Tube and it curves at the bottom of the Lift Tube and goes up inside it a few inches. When air is pumped into the Lift Tube it rises and all of the separate bubbles form a single bubble which pushes the water column above it up and out of the lift tube. As the plug of air rises the water column pressure above it drops because water is exiting at the top of the lift tube and the air plug expands. Continuous cycle. That's how it works, if you build one be sure to use clear tubing so that you can watch the process, it is very simple and elegant.
+George Crabtree Thank you for your visit and nice explanation of the airlift pump process. I think there is not a difference in the process whether air comes from outside of the main pipe or inside from it, the effect would be the same. The way you described air lift pump is well suited if you use the airlift pump in open wells, However if you want to get water from underground, than a hole must be drilled, in that case the way I described would be more advantageous, since you are drilling only one whole.
I've been wondering which method to introduce air is better myself.
Run an air pipe inside the discharge pipe , or an air line on the outside.
With the pipe inside , it obviously cuts down the water mix volume making it easier to lift a smaller weight per linear foot.
But does the air bubble suffer efficiency having to wrap around the inner air pipe? It would seem it would because the water could sluff off one side , and most likely you couldn't ensure a uniform column for it to travel up. Hence just making a smaller discharge pipe would combat the watermix weight per ft that an inner pipe would gain you.
And if the water inlet being constricted by the air line at the bottom is worrysome. You could just make a larger bell end for where the air line is introduced on up to about a foot past it's outlet.
The other advantage of the airline outside the discharge pipe. Would be that you could use a hose instead of a rigid pipe that would be necessary if the air pipe were inside the discharge pipe. Not to mention installation would definitely be easier.
Plus what about gate valves for keeping a prime ? No way to put those in with an inner pipe. However I'm not really sure if gate valves will cut the efficiency to far?
Air lift systems always discharge water in surges. Because once a certain amount of air comes out , the air line needs to build it's pressure again to emit another bubble. Little bit of the same principal of a ram pump.
Air Lift pumps use bubbles to raise water, they can raise water really hight without having a big reservory.
I'm afraid your argument is not scientific therefore not a valid counterpoint. Adding air to the water column, independent of bubble size or whether the tube is outside or inside, reduces the weight of the water in the column, thus Archimedes principle. Quod erat demonstradum.
If you pull on a rock from the "North" or push on a rock from the "South" the net force on the rock is ultimately the same... the design is what's different.
George, you are really a moron.
I don't like robot voices at all, but this was a very clear explanation.
Thank you,.
Long time describer here! you do such a great job visualizing complex mechanisms! I keep hoping someday you will explain CNC offset adjustments
Pretty good explanation of airlift pumps, but would be better if you provided a few examples of what applications they are good for, and some where they aren't.
I have seen an increased interest in the subject of air and water transfer. An interesting input has been contributed by Glen Martinez from Hawaii. He donstrates many uses and applications that consume very low wattages while producing adequate lift or head. Quite a study to see in action.
mekanizmalar, A nice presentation to convince that airlift is not convenient? Air bubbles act as a piston rising water in the tube. (of course, this does not avoid the Arquimedes principle you are NICELY exposing).
thank you for fundamentally explaining this concept. there should be more videos like yours for people who learn like I do, where we need to see it from the beginning wtih varying examples and numbers. Too many youtube videos explain concepts so vaguely that I don't see how people understand what's going on, but people must be smarter than me to get it.
+danh le Thank you for your support and nice comment. You are right about most of the TH-cam videos, they are not well done. However there are some really good videos out there..
+mekanizmalar I've gotten a+'s all throughout school without actually understanding too much, just plugging and chugging formulas. if u were my teacher i think i could learn physics and engineering very easily! do you have any recommended channels to watch who have great explanations?
+danh le Thank you for your compliment, I really appreciate it. I am so preoccupied with my animations, I do not have time to look for other channel. However I like Mr. Thang's animations, his TH-cam user name is thang010146.
I would add a correction to your video, airlift pumps are very inefficient at high head applications, in cases where it is not having to lift the water to great heights they are more efficient then any mechanical water pump I have ever seen. As I read it the cutoff point where airlifts start to become less efficient is around 24-30 inches of head limiting its practical application to things like aquaponics systems or wastewater treatment where high volumes of water are needed with a low head and additional oxygen is an added benefit.
Thank you for your informative feedback.
La semana que viene instalaré un pequeño sistema de tratamiento de aguas residuales one2clean. Y ahora he comprendido cómo funciona la bomba del mamut. ¡Muchas gracias!
Thanks for the clear, careful explanation.
Ray Kent Thank you for your nice comment.
mekanizmalar, we just need keep an open your mind. THANKS FOR THIS SO FORMAL VIDEO.
Very interesting, I didn't know about this pumping method.
Thanks so much for sharing. 😉👌🏼
Thank you
Tehnologia dumneavoastra poate fi imbunatatita ducand la dublarea inaltimii apei pompate foarte simplu
I made one in my 40 meters deep well and I am satisfied with results but I think you should have enough psi and cfm to get water out I am using 250 lpm 10 bar 50l air tank and getting 1200 litter ph with 1in pipe I
Thank you for your visit and comment. Yes you are right, higher you want to pump water, higher the air pressure should be, Since your well is 40 meter, it should be OK. Here is a question, have you try 8 bar pressure? If you did, what was flow rate rate of the water?
This is an excellent sistem , for a deep 120 meters well for example , you need a complicated mechanical device and a spensive great pump wich suffer abrasion wear to do the same work you can do with a simple air compressor and a pair of pipes whith a venturi on the extreme wich you can easily make at home.
In my area water level is about 80 feet under the ground so how much i dig earth and how much long and thick pipe i use to take water and what capacity of air pump i use
Hi makenizmalar, thank you for your informative video. I see the basic principles, but could you make a video that expands on some of the (limited) applications for the air-lift pump? Ahh I see in the comments that I'm not the only one who wants this. Not a jab at your great video, just the limitation of my imagination. Thanks again.
Instablaster.
just started and as soon as the annoying electronic voice came up , i had to stopped. whatever happened to people being humans and natural.
Maybe the author is unable to speak, or has an accent that you would probably also criticise?
they all became robots with A.I
can you use a L shaped pipe to have lots of pipe underwater without it going very deep?
Unfortunately, this won't work. The pipe needs to be vertical.
good explanation'
i wish you presented more realistic video of the site too
What is tha name of that tube transparent?
Very good explanation, I would like to know how to calculate it.
Please contact me
Great explanation !
An other interesting presentation thank you very much.
عرض جميع المنتجات مع الترجمه بالغه العربيه
ooo yeess, Thank you for this video, can ı ask some question. I have e pomp , can ı take a wather from 45 meters ??
Interesting but you should tell before the plan of your lecture. This wil prevent us from asking ourselves where you are going.
Thank you for your feedback and visit to my channel. Next time around I will take your advice seriously.
I am confused. I thought water was displaced according to MASS, not weight. A cu. ft. of lead weighs more than a cu. ft. of water. So you're saying if I drop a 10lb. block of lead, into a brimfull tub of water that 10lb. of water will overflow? Wrong!!!!!!!
where that I claim what you said. Can you specify time interwal so that I can answer to your question much better.
good video . Thanks
Thank you.
Awesome job thanks
If there is no electricity will steam work?
I don't think that steam will work. It will condense and become water.
Good, mekanizmalar; and steam will rise as bubbles in boiling water, as in a coffe maker.
@@RaulRamirez-pg3sw I think the question left out whether or not it's acceptable for the lifted water to be hot. Will steam be able to lift cold well water?
@@JeanPaulSauve Cold water, of course would condense steam on contact, but enough steam would heat a cold warer volume.
Tea anyone?
Learning more.
Thks
Thank you
thanks
The information might be solid, but that damn robot voice is unbearable.
that robot voice is Alexis brother
This is the worst air-lift pump design it is not worth the time or effort to build.
Thank you for your comment and opinion.
Like❤️👍
very poor ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, way to explain...sorry....
Dear Masey, Thank you for your visit and comment. However, if you believe presentation poor than explain it better in your comment so that we all learn something. Saying poor not exactable, you are making us to wonder how could it be much better. Please enlighten us.
It is not his fault but yours bz u r not able to understand English