Using your water pump to also put in air. - Aquaponic Gardening2024-03-29T08:03:47Zhttps://aquaponicgardening.ning.com/forum/topics/using-your-water-pump-to-also-put-in-air?commentId=4778851%3AComment%3A388528&feed=yes&xn_auth=nooh and the "cheap T venturi"…tag:aquaponicgardening.ning.com,2012-09-01:4778851:Comment:3885282012-09-01T01:40:05.707ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>oh and the "cheap T venturi" might perhaps be more accurately called an eductor instead.</p>
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<p>oh and the "cheap T venturi" might perhaps be more accurately called an eductor instead.</p>
<p></p> FYI, the amount of restrictio…tag:aquaponicgardening.ning.com,2012-09-01:4778851:Comment:3885272012-09-01T01:38:52.163ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>FYI, the amount of restriction or flow loss will probably not be a constant, it will probably vary by pressure. So while X pump might experience a loss of L1. Y pump that is stronger might have a loss of L2. I don't know what that might come up like but I'm pretty sure it will be a curve rather than a constant.</p>
<p>FYI, the amount of restriction or flow loss will probably not be a constant, it will probably vary by pressure. So while X pump might experience a loss of L1. Y pump that is stronger might have a loss of L2. I don't know what that might come up like but I'm pretty sure it will be a curve rather than a constant.</p> I guess what is needed is a t…tag:aquaponicgardening.ning.com,2012-09-01:4778851:Comment:3884812012-09-01T01:09:26.385Zhalemarthttps://aquaponicgardening.ning.com/profile/halemart
<p>I guess what is needed is a test to see how long it takes to fill a 5 gallon bucked with venturi verses without to see how much effect the flow is being restricted.</p>
<p>I guess what is needed is a test to see how long it takes to fill a 5 gallon bucked with venturi verses without to see how much effect the flow is being restricted.</p>
http://youtu.be/7zwxTGfhRr…tag:aquaponicgardening.ning.com,2012-09-01:4778851:Comment:3883682012-09-01T01:02:01.747Zhalemarthttps://aquaponicgardening.ning.com/profile/halemart
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<p><a href="http://youtu.be/7zwxTGfhRrU" target="_blank">http://youtu.be/7zwxTGfhRrU</a></p>
<p>Yamitsu AirStorm Venturi</p>
<p>This one is in the UK looks impressive.</p>
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<p><a href="http://www.kockneykoi.co.uk/images/products/airstorm.jpg" target="_blank"><img class="align-center" src="http://www.kockneykoi.co.uk/images/products/airstorm.jpg"></img></a></p>
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<p><a href="http://youtu.be/7zwxTGfhRrU" target="_blank">http://youtu.be/7zwxTGfhRrU</a></p>
<p>Yamitsu AirStorm Venturi</p>
<p>This one is in the UK looks impressive.</p>
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<p><a target="_blank" href="http://www.kockneykoi.co.uk/images/products/airstorm.jpg"><img class="align-center" src="http://www.kockneykoi.co.uk/images/products/airstorm.jpg"/></a></p>
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<p><a rel="nofollow" href="http://www.kockneykoi.co.uk/products/airstorm-venturi-aeration-unit.php" target="_blank">http://www.kockneykoi.co.uk/products/airstorm-venturi-aeration-unit...</a></p>
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<p> </p> That one with the Cheap T "ve…tag:aquaponicgardening.ning.com,2012-09-01:4778851:Comment:3883672012-09-01T00:59:00.341ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>That one with the Cheap T "venturi" is really just adding the bubble's without the "splashing" of letting the water drop into the tank from above. If you want to suck air down very far under water, you have to either pump the air down there or use a venturi that uses enough pressure/restricts the pump flow enough to actually suck the air down below the water's surface. As the depth increases the more pressure required to get the air.</p>
<p>That one with the Cheap T "venturi" is really just adding the bubble's without the "splashing" of letting the water drop into the tank from above. If you want to suck air down very far under water, you have to either pump the air down there or use a venturi that uses enough pressure/restricts the pump flow enough to actually suck the air down below the water's surface. As the depth increases the more pressure required to get the air.</p> Thanks Bob / TCLynx. That…tag:aquaponicgardening.ning.com,2012-09-01:4778851:Comment:3882932012-09-01T00:51:12.024Zhalemarthttps://aquaponicgardening.ning.com/profile/halemart
<p>Thanks Bob / TCLynx. That is SOOOO much more oxygen getting in for very little extra cost love it.</p>
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<p>Thanks Bob / TCLynx. That is SOOOO much more oxygen getting in for very little extra cost love it.</p>
<p></p> Here is the demonstration…tag:aquaponicgardening.ning.com,2012-08-31:4778851:Comment:3885232012-08-31T23:47:55.132ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p><iframe width="420" height="315" src="http://www.youtube.com/embed/zmd3nfunro4?wmode=opaque" frameborder="0"></iframe>
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<p>Here is the demonstration of the air from the video link above.</p>
<p><iframe width="420" height="315" src="http://www.youtube.com/embed/zmd3nfunro4?wmode=opaque" frameborder="0"></iframe>
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<p>Here is the demonstration of the air from the video link above.</p> http://www.youtube.com/watch…tag:aquaponicgardening.ning.com,2012-08-31:4778851:Comment:3882592012-08-31T16:39:34.145ZBob Terrellhttps://aquaponicgardening.ning.com/profile/BobTerrell
<p> <a href="http://www.youtube.com/watch?v=j47XbRzCcNo&feature=related" target="_blank">http://www.youtube.com/watch?v=j47XbRzCcNo&feature=related</a></p>
<p>here is a link that really works GREAT!</p>
<p> <a href="http://www.youtube.com/watch?v=j47XbRzCcNo&feature=related" target="_blank">http://www.youtube.com/watch?v=j47XbRzCcNo&feature=related</a></p>
<p>here is a link that really works GREAT!</p> As I understand it, a straig…tag:aquaponicgardening.ning.com,2012-08-31:4778851:Comment:3884232012-08-31T13:02:23.299ZHal Hursthttps://aquaponicgardening.ning.com/profile/HalHurst
<p><br></br> As I understand it, a straight setup, where a smaller pipe protrudes into a larger one open to the air at the back end, makes use of the Bernoulli effect to suck air into the water. This could be tweaked and improved by varying the size of the pipes involved, but this setup worked well with 300 gph and I went on to other tasks. To answer George, IMHO if the output was restricted (for instance, if you put a spray head at the end of the supply hose), and if your pump was powerful…</p>
<p><br/> As I understand it, a straight setup, where a smaller pipe protrudes into a larger one open to the air at the back end, makes use of the Bernoulli effect to suck air into the water. This could be tweaked and improved by varying the size of the pipes involved, but this setup worked well with 300 gph and I went on to other tasks. To answer George, IMHO if the output was restricted (for instance, if you put a spray head at the end of the supply hose), and if your pump was powerful enough to continue pumping the same volume of water, the increased water flow rate at the nozzle would probably draw in more air. In the real world, you would have to determine whether you still had an acceptable water flow, and whether the volume of air injected is increased. In my setup, I am not willing to sacrifice water flow in this line: it is the throughput of the biofilter.</p>
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<p>Not sure whether Johnathan's bubble drain has any advantages through fluid dynamics, but it should agitate the water and mix in air through turbulence, depending on the flow rate. When I have tried it in smaller diameter pipes, (as an antisiphon device) the water often gushes out the top as well as the bottom at first for a few seconds, until the weight in the water descending starts to accelerate the water that way through suction. If the capacity of the pipe is greater than the amount of water entering the "T" then gravity will suck in some air as well.</p>
<p>The original post here and the video that goes with it is pretty impressive. Discussion did touch on the energy required to operate this system, but my impression is that the air pump is the least efficient way to do it; and besides, I worry about contaminating the airstream with aerosol oil from the air pump and affecting the health of the fish.</p>
<p>FWIW there are of course other strategies for aeration which I'm not sure have been mentioned- waterfalls, sprays, and fountains which are ancient technology and require a minimum of tinkering and upkeep. I think that like "Tim the ToolMan Taylor" I have a tendency to go with difficult, complex, but interesting ways to solve some of these problems, maybe to impress myself and my friends, but I need a tattoo on the back of my hand that says Keep It Simple, so I can focus on the goal, get 'er done, and go on to another problem.</p>
<p><br/> <cite>Jonathan Kadish said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/using-your-water-pump-to-also-put-in-air?commentId=4778851%3AComment%3A388244&xg_source=msg_com_forum#4778851Comment388244"><div><div class="xg_user_generated"><p>If the pipe was smaller than the tube you would just have water coming out off the top of the pipe. I don't think this is a venturi... it just allows the water and air to mix as gravity accelerates and pulls the mixture down. I'm naming it the "NYC Bubble Drain" so I can be as famous as Affnan<img src="http://i925.photobucket.com/albums/ad93/ucsycybersmiley/3.gif"/></p>
<p><br/> <cite>George said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/using-your-water-pump-to-also-put-in-air?commentId=4778851%3AComment%3A388339&xg_source=msg_com_forum#4778851Comment388339"><div><div class="xg_user_generated"><p>Just a thought but what would be the effect of going from 3/4 down to 1/2 and then introducing air below the reduction? Doesn't a venturi work by increasing pressure, instead of decreasing? This has been in my plans to experiment with but one of many that I haven't gotten around to yet. </p>
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</blockquote> With venturi you need enough…tag:aquaponicgardening.ning.com,2012-08-31:4778851:Comment:3884212012-08-31T12:02:39.277ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>With venturi you need enough pressure pushing the water to overcome the drag of the restriction in order for the velocity to increase enough to suck the air in. If you are draining by gravity, then you have to be careful with restricting the water since gravity might not be strong enough to over come that and you may just wind up with a drain that is too slow to keep up.</p>
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<p>In other words, there is a price to be paid when using venturi, usually it uses up some of your pumping…</p>
<p>With venturi you need enough pressure pushing the water to overcome the drag of the restriction in order for the velocity to increase enough to suck the air in. If you are draining by gravity, then you have to be careful with restricting the water since gravity might not be strong enough to over come that and you may just wind up with a drain that is too slow to keep up.</p>
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<p>In other words, there is a price to be paid when using venturi, usually it uses up some of your pumping power to deal with the restriction and pressure to inject the air into the water and you do loose some of your flow. So balance carefully what is most efficient/cost effective. Venturi are way cool, but they are not always the best answer.</p>