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Not sure if this is the correct forum for this question but it seemed the best fit.

I am trying to calculate the potential kinetic energy of water flowing through a pipe.

Just your standard house pipe of 3/4 “ copper @ 40 psi and a flow rate of 5 gpm.

There will be a reduction of the pipe to a .305 ID at the last 4” of pipe. It is through this section of the pipe that I am looking to calculate the energy of the water to do work.

I have looked and I haven’t figured out how I would calculate this.

I get a velocity of 6.6 meters/s but how do I calculate the energy potential of the water there.

In useful terms like watts/HP. I am trying to design something and I need to know if there is enough energy there to make it work. My intuition says it will but that doesn’t make is so and so far I am not smart enough to figure out which equation to use or how to covert the numbers I know to get the answer.

Thanks

Tom