Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 16, 2017 18:38:10 GMT
Hi all, As ive said im not a plumber, im actually a joiner, anyway i have an allotment and have got an ibc tank for rain water collection, now after looking on youtube i saw something called the venturi system, and thought i will use this on my ibc tank to recirculate and aerate the water, so my thinking was if i have a full tonne of water in a tank, then the weight or flow of the water should flow from bottom outlet of tank up and round the 32/40mm waste pipe that i attactched with the venturi (home made) but this is not the case as i have found out....... Now can anyone help in anyway at all on how i can get the water flowing round and recirculating, bearing inmind the is no electric on the allotment. See attached diagram and thanks in advance Attachment Deleted |
|
|
|
Post by rocketmanbkk on Apr 16, 2017 18:41:17 GMT
How high has the water got to flow upwards? Is the water tank on the floor?
It's all about head & pressure
|
|
|
|
Post by rocketmanbkk on Apr 16, 2017 18:44:23 GMT
Looking at the pic it's not going to work.
You need the tank higher & the flow pipe lower so you've got some head of pressure.
As a rule for every 1m the tank is raised above the outlet you get 0.1 head pressure
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 16, 2017 19:27:57 GMT
The tank itself is just sat on two pallets, with the outlet at about 5" from bottom of tank on the side of the tank....the pipe it has to go round and up is about 5" above the tank.......so from what i get, if i was to put the tank another two pallets higher and have the outlet under the tank instead of coming from the side, would that be enough pressure to recirculate the water around?.........or is there another way of just getting the flow moving as it is.
I HAVE GOT A JENNY THAT I CAN USE IF THERE IS A WAY OF JUST GETTING THE FLOW TO RUN, BUT OBVIUOSLY CANT KEEP THE JENNY ON.
|
|
|
|
Post by rocketmanbkk on Apr 16, 2017 19:52:40 GMT
I say no
It won't work.
|
|
|
|
Post by rocketmanbkk on Apr 16, 2017 19:54:27 GMT
If you take the example of hot water in a house where you have a hot tank in an airing cupboard & a cold tank in the loft.
The cold tank is giving pressure to push the hot out
It's not enough pressure by far
It'll need a pump
|
|
|
|
Post by Plumberboy on Apr 16, 2017 19:55:00 GMT
If you get more height on the tank you can make a hydraulic ram pump which works on small gravity but can pump up hill, no electric pumps needed.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 16, 2017 20:23:48 GMT
If you take the example of hot water in a house where you have a hot tank in an airing cupboard & a cold tank in the loft. The cold tank is giving pressure to push the hot out It's not enough pressure by far It'll need a pump I know what you mean, thanks. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 16, 2017 20:28:16 GMT
If you get more height on the tank you can make a hydraulic ram pump which works on small gravity but can pump up hill, no electric pumps needed. I dont suppose you have any links for a hydraulic ram pump, and would this get the water flowing continuous or is this just a manual pump? Just found this, but doesnt really make any sense to me... www.instructables.com/id/Hydraulic-Ram-Pump/Would this still have to be attatched to an underneath outlet and the tank raised. |
|
|
|
Post by tomplum on Apr 16, 2017 20:38:52 GMT
hello shamma, welcome to the brew cabin,,,,I'll give it some thought and see what i can come up with, there's no way you can make that tank circulate without some kind of pump, but if we arrange a higher header and a syphon system, there may be a way, I'll sleep on it,
|
|
|
|
Post by Plumberboy on Apr 16, 2017 20:44:07 GMT
If you get more height on the tank you can make a hydraulic ram pump which works on small gravity but can pump up hill, no electric pumps needed. I dont suppose you have any links for a hydraulic ram pump, and would this get the water flowing continuous or is this just a manual pump? Just found this, but doesnt really make any sense to me... www.instructables.com/id/Hydraulic-Ram-Pump/Would this still have to be attatched to an underneath outlet and the tank raised. That's it mate.  there are many videos on YouTube on them and you don't need electricity as they work on the gravity of water coming in which creates the hydraulic action, they are widely used all over the USA in remote areas . |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 16, 2017 20:44:19 GMT
hello shamma, welcome to the brew cabin,,,,I'll give it some thought and see what i can come up with, there's no way you can make that tank circulate without some kind of pump, but if we arrange a higher header and a syphon system, there may be a way, I'll sleep on it, Hi Tomplum, i was actually watching one of your vids on youtube and this is how i found your forum, and thank you. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 16, 2017 20:48:28 GMT
I dont suppose you have any links for a hydraulic ram pump, and would this get the water flowing continuous or is this just a manual pump? Just found this, but doesnt really make any sense to me... www.instructables.com/id/Hydraulic-Ram-Pump/Would this still have to be attatched to an underneath outlet and the tank raised. That's it mate. there are many videos on YouTube on them and you don't need electricity as they work on the gravity of water coming in which creates the hydraulic action, they are widely used all over the USA in remote areas . Nice one mate, i'll have a look around, cheers. |
|
|
|
Post by dcoxplumbing on Apr 17, 2017 8:26:50 GMT
Hi Shamma
Just looking at your diagram and wondering if the venturi is there to create negative pressure at the top of the pipe as air blows across it. If that's the case it may well draw the water up from the main tank and start a syphon to create a continuous flow. Just a theory.
|
|
|
|
Post by tomplum on Apr 17, 2017 8:54:02 GMT
I've had a look at those hydrolic pumps and now understand how the work, The weight of water from the scourse compresses air in the vessel, then through a system of check valves the same pressure is shocking some of the water uphill, the drawback is you lose 10% of the water causing the shock motion, ( you never get owt for nowt), I've looked at setting a syhon action up, but without a steady income of water into a header, its a non starter, A practical solution is a solar powered pump sink this to the bottom of the tank, extend the spray head to above the water and it will circulate the water, I think, Its only £15 so worth a shot, I have a little one i paid £7 for 2 years ago it works ok, |
|
there are many videos on YouTube on them and you don't need electricity as they work on the gravity of water coming in which creates the hydraulic action, they are widely used all over the USA in remote areas .
