Calculating Water Flow Without a Flow Meter: A Practical Approach

  • Thread starter OrdinaryJoe
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In summary, calculating water flow without a flow meter can be done using practical methods such as measuring time, volume, and pressure. By utilizing these factors and using basic equations, one can accurately estimate water flow without the need for a flow meter. This approach is particularly useful in situations where a flow meter is not available or cannot be installed. However, it is important to note that this method may not be as precise as using a flow meter and should be used with caution in critical applications.
  • #1
OrdinaryJoe
Hello all.
As stated I am just an ordinary Joe and I have tried to find some information about water mills to generate my own electricity and I would like to see if you guys can see if this is feasible or not :)
I have one daughter(15months) and a lovely wife(34y).
Hope that you will help me out since I am not the brightest bulb in the room haha ;)
Cheers!
 
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  • #2
Welcome to PF!
OrdinaryJoe said:
I am not the brightest bulb in the room
We know how to increase the voltage :wink:

Post your question in the correct forum and members shall surely help you.

Regards,
Wrichik.
 
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  • #3
OrdinaryJoe said:
I have tried to find some information about water mills to generate my own electricity
Welcome to the PF, Joe! :smile:

You've come to the right place. If your main questions are about what type of generator to pick for your given water flow, the Mechanical Engineering (ME) forum may be the best place to start a thread to ask your questions. If you know what type of generator type you want to use already, and mainly have electrical questions, the Electrical Engineering (EE) forum is probably the best place to start the thread. There are lots of important things to take into account (like MPPT power conversion, Anti-Islanding protection, etc.), so it's definitely worth discussing all of that in a thread. The more information that you can give when you start your thread (water flow rates, water head available, your background in pumps/generators/electricity, etc.), the better.

:smile:
 
  • #4
berkeman said:
Welcome to the PF, Joe! :smile:

You've come to the right place. If your main questions are about what type of generator to pick for your given water flow, the Mechanical Engineering (ME) forum may be the best place to start a thread to ask your questions. If you know what type of generator type you want to use already, and mainly have electrical questions, the Electrical Engineering (EE) forum is probably the best place to start the thread. There are lots of important things to take into account (like MPPT power conversion, Anti-Islanding protection, etc.), so it's definitely worth discussing all of that in a thread. The more information that you can give when you start your thread (water flow rates, water head available, your background in pumps/generators/electricity, etc.), the better.

:smile:
Wow great reply! Thank you mate for your helpful post.
You gave me a lot to think about (and study up on) even before I start asking my questions.
If I don't have a flow meter. Could I calculate the flow with just the width*depth of the channel and the speed of the stream by measuring how far a plastic duck travels during a second?
I'll go and do some recordings and measurements of the mill and canal so I can open up a thread :)
 
  • #5
Wrichik Basu said:
Welcome to PF!
We know how to increase the voltage :wink:

Post your question in the correct forum and members shall surely help you.

Regards,
Wrichik.
Are you sure that you have good enough step up transformers ;)
Thank you buddy!
 
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  • #6
OrdinaryJoe said:
You gave me a lot to think about (and study up on) even before I start asking my questions.
Sounds like you will fit in just fine here at the PF! :smile:
OrdinaryJoe said:
If I don't have a flow meter. Could I calculate the flow with just the width*depth of the channel and the speed of the stream by measuring how far a plastic duck travels during a second?
That works! :cool:
 

FAQ: Calculating Water Flow Without a Flow Meter: A Practical Approach

How accurate is this method of calculating water flow without a flow meter?

The accuracy of this method depends on the precision of the measurements and calculations used. Generally, it can provide a reasonably accurate estimate of water flow, but it may not be as precise as using a flow meter.

What equipment do I need to calculate water flow without a flow meter?

This method requires a stopwatch or timer, a ruler or measuring tape, a bucket or container, and a calculator. A thermometer may also be helpful for measuring water temperature.

Can this method be used for any type of water flow?

This method is most accurate for steady, uniform flows such as in a pipe or channel. It may not be as accurate for turbulent or fluctuating flows.

How do I use this method to calculate water flow for a large volume of water?

This method works best for smaller volumes of water, such as in a household or small irrigation system. For larger volumes, it may be more practical to use a flow meter.

Are there any limitations to using this method?

This method relies on certain assumptions and may not be suitable for all situations. It is important to carefully follow the steps and consider any potential sources of error. Additionally, this method may not be as accurate as using a flow meter or other advanced techniques.

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