NEW SIPHON DESIGN to work with any GB inflow rate.

Erich

docscience wrote:

My design will work with any water flow and is designed to be able to start with a much smaller water flow.
This design addition that another person has figured out, will stop a siphon almost instantly no mater what the water flow is.

Kewl - build away and i love to be corrected

If it works, i'll be happy to swap one of my systems over and trial it for some time

In the words of a Star Trek captain - "make it so"

docscience

Charlie

That is due to the design of the pond pump, being less efficient at lower volumes.
It is one of those laws of physics.

The actual energy needed to raise water through height is directly proportional to the height the water is being raised.

Erich

Charlie wrote:

FYI....Its been proven that a pond pump has less current draw at higher loads. :thumbleft:

Something i certainly want to test over a 7 day period myself. Sounds legit though

docscience

earthbound

This is something like writing a thesis, and having to defend it when I have not tested out an actual working device. I sure hope it works.

earthbound

Siphons at the best of times are unpredictable bloody things. Build it, test it, talk it up.... :thumbright:

Erich

docscience wrote:

earthbound

This is something like writing a thesis, and having to defend it when I have not tested out an actual working device. I sure hope it works.

So do we or you know what will happen - :bootyshake:

Charlie

Erich wrote:

Charlie wrote:
FYI....Its been proven that a pond pump has less current draw at higher loads.

Something i certainly want to test over a 7 day period myself. Sounds legit though

There is a debate aboutt it where SV and Werdna make me look like a real goose because I didnt believe it was possible lol

The discussion is within another thread so you have to wade through a discussion on eductors as well but its worth a look if you want to laugh at my dumbness

Starts about here...
viewtopic.php?p=343380#p343380

Erich

Cheers Charlie

I gather the pump works less as its pumping not so hard, therefore the wattage (and power consumption) is not as great as a higher level

RupertofOZ

docscience wrote:

The main purpose of this siphon design, is so that the water surface of the FT can be put as close to the bottom of the GB as possible. This is to reduce energy cost of pumping the water back up to the grow bed. Water pumping cost is directly related to how high the water must be pumped.

docscience wrote:

I agree that is why many people can not get their siphon working, because they do not have a high enough flow rate.
That is why I put what amounts to a small 1/2 inch tube which works like a mini-siphon to start the larger siphon.
With a slow flow rate in some siphons, the u trap in the bottom keeps the air from re-entering from the bottom.
The u trap also makes it harder for the air to get down and out of the siphon to create the vacuum.
I use the 1/2 inch tube which can remove the air easier to create the siphon..

If you want the siphon discharge to be as close to the fish tank surface... and your grow beds are higher than your fish tank....

Then why even have a "U bend" trap at all....

If you have to use a siphon.. then an Affnan siphon... and a ball valve to adjust the flow... should work without any problems.. and certainly without the need for a "U bend".... :dontknow:

docscience

RupertofOZ

I have a question which would be good for me to know.
What is the shortest distance between the GB floor, and the output tube of the Affnan siphon, that is commonly used ?

RupertofOZ

I'll leave that to the siphon "gurus" Doc.... I've never run siphons... other than loop siphons... :lol:

docscience

I can not comment on these Affnan siphon and loop siphons since I have not spent much time reading about them.
It is something I should be doing, as there may be very good ideas that I can use.

How dependent are loop siphons on a particular flow rate to start ?
Can they start letting fluid through at a low flow rate and not officially start ?

How dependent are loop siphons on a particular flow rate for cutting out ?
What flow rates would have them continue operating and not shut down properly when the bed is nearly drained ?

RupertofOZ

Loop siphons are easy to adjust to get the start/stop right... you know when it's not because the flood level in your grow bed... just keeps getting higher...

(assumed ball valve control on grow bed delivery line)

Adjusting the height of the flood itself.. is simply a matter of raising, or lowering the loop...

docscience

Thankyou

Are there any comments on the loop siphon stopping that you can mention at the moment ?

Backyard Aquaponics A place to discuss aquaponics

NEW SIPHON DESIGN to work with any GB inflow rate.

Backyard Aquaponics
A place to discuss aquaponics