Can I Connect Tank 1 & Tank 2 to Create a Water Level Difference?

AI Thread Summary
Connecting two tanks to create a water level difference is only feasible with a pump, as gravity alone cannot achieve this. Mechanical pumps, such as hand-cranked models, can be used, but they still require energy input to function effectively. When two tanks are connected, water will flow until the levels equalize unless an external force is applied. The use of a Venturi pipe can influence the rate of pressure equalization between the tanks but does not prevent eventual equalization. Ultimately, all pumps require an energy source, whether mechanical or otherwise, to operate effectively.
Domagoj
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I am currently working on something and I would like to know something. When we connect two tanks and we have water flowing into Tank 1.
Is it possible to make a connection between Tank 1 and Tank 2 so the water level in Tank 2 is higher than water level in Tank 1?
 
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Domagoj said:
I am currently working on something and I would like to know something. When we connect two tanks and we have water flowing into Tank 1.
Is it possible to make a connection between Tank 1 and Tank 2 so the water level in Tank 2 is higher than water level in Tank 1?
Welcome to the PF.

As long as the connection includes a pump... :smile:
 
Yeah i didnt think there is any other solution except that... Are there some kind of pumps that don't use electricity (or any other imputs), something that works soley on mechanics, and are those pumps efficient in comparison with electrical pumps?
 
Domagoj said:
Yeah i didnt think there is any other solution except that... Are there some kind of pumps that don't use electricity (or any other imputs), something that works soley on mechanics, and are those pumps efficient in comparison with electrical pumps?
What's the application?
 
Domagoj said:
Yeah i didnt think there is any other solution except that... Are there some kind of pumps that don't use electricity (or any other imputs), something that works soley on mechanics, and are those pumps efficient in comparison with electrical pumps?

What do you mean by "or any other inputs"?

There are hand cranked pumps. Are they allowed?
 
there is no application...I just want to find out how things work
 
This pump doesn't use any electricity... :smile:

http://shop.australiangeographic.co.../BEBN-duncan-the-drinking-bird-outbox-web.jpg
BEBN-duncan-the-drinking-bird-outbox-web.jpg
 
I have another question that bothers me... If we have 2 tanks, Tank 1 is lower and Tank 2 is higher and they are connected. If water is flowing in Tank1, will Tank 2 also be filled and if so, are the water heights in both Tanks equal?
 
Domagoj said:
I have another question that bothers me... If we have 2 tanks, Tank 1 is lower and Tank 2 is higher and they are connected. If water is flowing in Tank1, will Tank 2 also be filled and if so, are the water heights in both Tanks equal?
If the water heights are not equal and the tanks are connected, there will be a water pressure difference that will drive water from the higher pressure (higher height) to the lower pressure, until the two heights are equal.
 
  • #10
I understand thank you...One more... If we use Venturi pipe to connect two tanks, let's say that smaller end goes in Tank 1, and bigger end goes in Tank 2. Let's say that bigger end is twice the size of smaller end of the pipe. Does that affect water levels in Tanks.
 
  • #11
Domagoj said:
I understand thank you...One more... If we use Venturi pipe to connect two tanks, let's say that smaller end goes in Tank 1, and bigger end goes in Tank 2. Let's say that bigger end is twice the size of smaller end of the pipe. Does that affect water levels in Tanks.
The change in pressure due to the Venturi effect only occurs when the liquid or gas is flowing. So it will affect how quickly the two tank pressures equalize, but won't prevent them from equalizing eventually.

https://en.wikipedia.org/wiki/Venturi_effect
 
  • #12
Domagoj said:
Are there some kind of pumps that don't use electricity (or any other imputs)
Basically, no, not never ever. You cannot do work without an energy source. All the devices that appear to do that are based on some hidden source of energy (a trick) that is not obvious to the audience. If you define a pump as a device that raises the level of a fluid then all pumps need energy.
 
  • #13
sophiecentaur said:
Basically, no, not never ever. You cannot do work without an energy source. All the devices that appear to do that are based on some hidden source of energy (a trick) that is not obvious to the audience. If you define a pump as a device that raises the level of a fluid then all pumps need energy.
I was reffering to something like this
https://en.wikipedia.org/wiki/Hydraulic_ram
 
  • #14
Domagoj said:
I was reffering to something like this
https://en.wikipedia.org/wiki/Hydraulic_ram
Yes - and a hydraulic ram uses the Power of the water flowing through it. You may regard that as 'free' energy but it's still an energy input. The lower of your two tanks would have to have another outlet, allowing water flow downhill, out of it, to power the Ram.
 
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