Has Fletcher dropped out of class?

[Fletcher]

Hope this helps Kaine .. A basic Syphon delivery system - nothing magical .. same hydrostatic principles as Heron's I guess ..

Syphons work because the water molecules hold hands and pull each other along in a chain - hydrogen bonding and covalency provide the chain link forces ..

P.S. I use this system to empty my pool here in NZ - 30 meter hose from city supply at house blows water into the pool (hose end at bottom) - disconnect hose at house tap and bend end over to stop flow - carry this folded end down to a level below the pool water level and release the end letting water flow out - water in pool syphons out until empty .. because it is one continuous hose no air can enter the system destroying the syphon effect ..

[thx4]

A process that you should know is very common here, the Aries pump ;https://youtu.be/BZ2FKRbBcy0?si=2GMSyQP0PfT_zX6t

I'm glad you're back in shape, that's the main thing.

[agor95]

A process that you should know is very common here, the Aries pump ;https://youtu.be/BZ2FKRbBcy0?si=2GMSyQP0PfT_zX6t

I'm glad you're back in shape, that's the main thing.

It is also known as a 'Ram-pump' it is impressive how heigh a second flow can sent.
It is true the quantity lifted is far less than the quantity that flows though the main pipe.

I was thinking a cotton plug can be put in the pipe and flushed via the continuos pump in the illustration.
That way a strong flushing flow would not be required; just a reasonable pressure.

You could detected the flush operation is completed by the change of sound in the pump.

Regards

[Fletcher]

Yes, my dad and I installed a Ram Pump on his property 30 years ago to lift water to their house over about 30 meters height and 300 meters length - the water source was an above ground spring in a valley that we dammed then set a pvc drive pipe to the slightly lower Ram Pump 7 meter away and 2 meters lower - it used the kinetic energy of the water volume coming down the circular pipe to then lift about 10% of the original volume to the house tanks .. it worked well but did need regular maintenance when flooding occurred and debris built up .. eventually we went to and electric force pump when we put electricity in to the site ..

A Ram Pump was not suitable to use in my situation .. the bore is a 6 inch pvc pipe extending down 20 meters from ground level - the water head is 2.5 meters below the top of the bore pipe - this made the head about 12 meters above sea level (very nearly the same as the top of my tank where the water feeds in (visible so I can see the flow rate at all times)) - fortunately the bore head never drops significantly because I am taking only a moderate amount of water .. even when I increased the flow to maximum (by dropping the delivery pipe to the bottom of the tank i.e. max fall height, the bore head would only drop 1 meter and stay at that height - then when not in use replenish the head in a 1/2 hour .. IOW's the bores compensatory replenishment rate was very fast and able to cope with much larger demands - this is excellent news for when I use the water for other things or community water supply because then I can use an electric pump at much higher discharge rates and it will automatically compensate and replenish its head quickly .. i.e. the more the water is drawn the better the flow rate into the bore becomes as I experienced ..

[Fletcher]

2024 Update ..

Spent 10 weeks in Savusavu Fiji Islands - first 3 wks with my family then I stayed on to do some repairs and maintenance etc ..

First job was to repair an empty 10,000 liter house water tank that had a vertical split in it - epoxy repairs are not always reliable, so I drilled the top and bottom of the 4 inch split to stop the crack 'traveling' under pressure and then placed "flashband" ( aluminum sheeting with sticky bitumen backing ) inside and outside the crack/split - then I bought 2 trucking load straps and tightened them over the crack to hold it closed - then filled the tank to capacity - internal water pressure held against the patches etc - no leaks after 2 months ..

Next was to prep and paint the houses after waterblasting and light sanding etc - went very well and should be good for another 10 to 15 years ..

I decided to fully automate my bespoke siphon delivery system from 500 meters in the bush to my house tanks to supplement rain water collection - since the siphon had a positive pressure delivery albeit small due to head losses due friction in a 1 inch pipe I decided to build a bridge system between the tank rainwater system and the bore siphon system and automate it all - I figured the house pump could pull direct from the bore under in-situ positive pressure delivery from the siphon - which it did with no effort and only a small drop in tap pressure ( hardly noticeable) - then I fixed a one-way value into the siphon delivery system to the tanks ..

Upshot is .. the house pump directly pulls water on-demand from the bore 500 meters away with good pressure - when the house pump is off the siphon system automatically starts again topping up the external rainwater tanks used for gardens and nurseries etc - the siphon system requires no "priming" because the house motor pulls any air in the siphon line with it replenishing the water in the line etc ..

N.B. usual way is to buy and place a submersible pump down the bore and lift water and push it back to the house tanks - I didn't want a solar system that could get stolen or smashed in a cyclone, or pay $30,000 for a transformer and overhead mains line to my bore - the on-demand push and pull system from my house pump cost nothing but some thought and time ..

And a few other jobs as per usual ..

Photo's are of my caretaker and one of his sons at lunch time with my family - the other is of my caretaker family with a traveling lovely young frenchman named "clemont/clem" who stayed with them for a week or so ( with the painted houses in the background ) - and the last is dinner with some friends at Nawi Island and Marina in town, photo bombed by the lady from LA lol ..

..............

[daxwc]

Fletcher tell me something shitty about Savusavu Fiji Islands so I don’t have to feel so jealous. You know snakes keep entering your bed or bats with rabies living in the attic. If there isn’t any throw us a bone and make something up.

[Fletcher]

Sure dax .. first, Savusavu is a coastal yachting and resort town in the second largest island Vanua Levu of the Fiji Islands ..

1. everything in Fiji rots or rusts, and it does this 5 times faster than anywhere else in the world .. build out of concrete ..
2. there are mosquito's, especially inland and in the bush, so don't go there if you have a severe reaction to them, take 'deet', but they are no problem if you are staying near the coast where the wind blows ..
3. there are 2 types of snake in Fiji, a small boa constrictor ( 3 ft ) and a very small venomous snake ( 2 ft ) - I've only seen the constrictor in a zoo - my caretaker once saw a venomous one deep in the bush in another part of Fiji when he was a young man .. introduced mongoose ate them all ..
4. fruit bats fly out at night - they are the big flying fox type - there are no blood sucking rabbies filled bats like the movies ..
5. beer and food is cheaper than in NZ and Australia i.e. cost of living is cheaper - roads have more pot holes - cars are expensive but taxi's are cheap, as is labour ..

There, that should do it lol ..