Gravity powered water generator

[memoryman]

0.272 kWh is correct. Since gravity is conservative, 0.272 kWh is needed to return the water to 100m.

[citfta]

Brutus, I think you are overlooking something here.  You may be thinking that you only have to raise enough water to the top to fill the top bucket or container.  But at the same time you have to have going up some more water to fill the next bucket  and the next bucket.  So you have to have just as much water being lifted as is going down or you will soon run out of water.  In a perfect system with no losses you still will need just as much power to raise the water back up as you got from it on the way down.  I was a volunteer firefighter for 26 years and I know it takes a lot of power to raise water against gravity.

[Low-Q]

Potential energy of 1000kg at 100 meter hight is exactly 982000 Joule.
Hence, the kinetic energy at the moment that mass has dropped 100 meters is 982000 Joule.


So, you need 982000 Joule to lift 1000kg 100 meter up.


Loss / friction is an unknown variable which cannot be included.
So the answer should be:
More than 982000 Joule to lift it
Less than 982000 Joules in the fall.


Too bad one cannot get more Joules on the way down than the way up.


Vidar.

Yesterday I reed about the potential energy from 1000 Lt./1 cbm of water
falling from 100 meters height : 0,27 KWh 

How much is to spent energetically( inclusive mechanical-technical losts)to bring this quantity to this high level ?

[Brutus]

Citfta:  I am not losing water or power from the lower buckets.  They are constant weight.  They are rotating on a conveyor which is being fed continuously from the rope pulley system to the top of the conveyor..  The conveyor is what runs everything, through the water weight in the buckets.   The  water is sent back  to the top after emptying buckets with the turning of the conveyor by the rope pump assembly.  This, as has been pointed out, will manifest in a certain loss due to the power consumption of the assembly in motion.  The power I am gaining through the generator, which  you will remember is generating now at peak output,  (I believe) is enough to supply an added water pump to supplement the conveyor bucket weight to keep the same processes working, negating the losses.  The thing every one does not seem to understand is I have a system which will run itself at the initial start up through weight in the water buckets from the conveyor.  I t will have enough weight to operate the water pulley system to draw water up to the top of the conveyor.  It will have enough weight to power the step up gears to gain the rpm's necessary to turn a generator to optimal speed.  All this is built in to the initial assembly with enough water weight to cause all of these processes to work simultaneously. (Initially).  Now  I have to deal only with the losses as a secondary function to keep the system moving. I have already explained I need not worry about cogging as we now have generators that do not have any or at least very little cogging (or Drag) from which I can choose.  This is  the point here.  I just need to allow enough extra water to be added to the conveyor bucket assembly to offset the inherent losses from the initial assembly functions.  If I can't do that little thing from a 5,000 watt generator supply I should just quite now.  It seems I am the only one that gets this concept.  Please look at the U-Tube video I think around the second posting which shows my water rope assembly by the guy who built and uses it at home in his back yard.  It is so cool to watch.  It's his idea.  And the Rosch video (which most claim is fake), But it shows my process in action, only I use water weight and he uses inefficient air power.  But the gear and generator assembly is close to what I had envisioned.
Even if I had to crank the system manually to get it started, that would be nothing big.  Once rolling it would be self sufficient. 
Maybe I should just abandon the whole rope pump assembly and concentrate on just a pump motor supplied by the power of the generator.  Just crank  handle it started initially.   Then I could adjust it to fill as needed.   Something to think about. 
Thank You for your service Sir. 

[Low-Q]

Brutus,


What is the difference in lifting the required amout of water via buckets or other methods?
You must lift the same amount of water as the water you fill in the buckets.
This will result in a perfectly balanced system, like a seesaw with the same weight and location on each side of the seesaw. No matter how you position the seesaw it will remain stationary.


Vidar