Can a Small Tank Solve the Problem of Fluctuating Water Pressure?

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Discussion Overview

The discussion revolves around the challenge of maintaining a consistent water flow from a small tank despite fluctuations in water pressure due to varying heights. Participants explore potential systems and setups to achieve a specified quantity of water supply, such as 500 ml or 250 ml, at a consistent rate.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant proposes using a medium-sized tank with a small diameter pipe leading to another small tank to maintain a constant water height and flow.
  • Another participant expresses confusion about the nature of the changing water pressure, questioning whether the outlet is moving.
  • A suggestion is made for an active system incorporating pressure sensors and valves to regulate flow.
  • A reference to a water clock is introduced, highlighting the use of a float regulator to maintain constant pressure in a receiving tank.
  • Further clarification is provided about the need for a consistent flow from the small tank, controlled by a valve, to fill a glass with the same amount of water each time.
  • A mechanical bar optics system is suggested as a simple solution, drawing parallels to how spirits are dispensed in pubs using a measuring cylinder with valves to ensure consistent quantities.

Areas of Agreement / Disagreement

Participants express various ideas and approaches to the problem, with no consensus reached on a single solution. Multiple competing views remain regarding the best method to achieve consistent water flow.

Contextual Notes

Some limitations include the lack of clarity on the specific mechanics of the proposed systems, assumptions about water pressure behavior, and the need for further exploration of the technical details involved in implementing these ideas.

Who May Find This Useful

This discussion may be of interest to individuals working on fluid dynamics, water supply systems, or those seeking practical solutions for consistent liquid dispensing in various applications.

sfcd_123
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hi i m new in this forum...n i have come to take some suggestion...

i m plaaning to make a water supply which willl give some specified guantity supply(like 500 ml,250 ml) everytime...bt the main problem occurring is the water pressure in the outlet...the water pressure is not same all the time because the height is changing...so is there any system or set up to keep the pressure same though the height is changing...

i have a plan...if i take a midium size tank and make hole at bottom and input a small dia pipe and take it to another small tank which have its top level is same of the bottom of previous tank..than the small tank will always filled with same height..so can i get constant water flow?the pipe will b small so i think the pressure of big tank will b less...please help quickly...

i have to submit this proposal in 2 days...please...:(:(
 
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I'm not very clear on what you mean by the water pressure changing - is the outlet moving?

I'm thinking of an active system, with pressure sensors and valves.
 
Reminds me of a water clock where the flow of water (proportional to pressure) needed to be constant.
 
To quote http://en.wikipedia.org/wiki/Water_clock" :

"...water flowed from the top tank to the bottom tank via a float regulator that maintained a constant pressure in the receiving tank."
 
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i mean i should have constant water flow in a pipe from the small tank...i have to fullfill a glass of water same amount everytime approximately at sametime whether the pressure is different...thats why i need same flow of water..the flow of water will b controlled by a valve...
 
the water will be situated at a small tank and when i need water i just open the valve for a certain amount of time and the output must b same quantity everytime...
 
Why not just use a simple mechanical bar optics type system: Look at how 25ml and 50ml measures of spirits are dispensed at a pub. The same quantity of liquid is measured regardless of how full the bottle is.

This is achieved very simply with a measuring cylinder which is moved between two positions. The measuring cylinder has two valves: one on the top, and one on the bottom. With the cylinder in one position, the top valve is open and the bottom closed. (This allows fluid to flow from a higher reservoir into the cylinder to fill completely, and cannot be overfilled). The cylinder is then moved to its lower position, where the top valve closes and the bottom valve opens. (This stops the flow from the reservoir, and drains the contents of the cylinder into your chosen receptacle).

Easy.
 

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