The discussion revolves around the feasibility of connecting two tanks to create a water level difference, specifically exploring the mechanics of pumps and fluid dynamics in this context. Participants inquire about the possibility of achieving a higher water level in Tank 2 compared to Tank 1, and the implications of using different types of pumps, including mechanical and hydraulic systems.
Participants express varying opinions on the necessity and types of pumps required, with some agreeing that pumps are essential while others explore alternative mechanical solutions. The discussion remains unresolved regarding the efficiency and practicality of different pumping methods.
Limitations include assumptions about the definitions of pumps and energy sources, as well as the specific conditions under which the tanks are connected and filled.
Welcome to the PF.Domagoj said:
What's the application?Domagoj said:
Domagoj said:
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.Domagoj said:
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.Domagoj 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.Domagoj said:
I was referring to something like thissophiecentaur said:
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.Domagoj said: