Not sure how the friction factor 0.003 was calculated, but this value seems to be the Fanning friction factor based on my estimation. If this is the case, the head loss should times 4 as the friction in the equation should be the Darcy friction factor.

thanks

cant see shit on this stupid clear board

The pump should be rated by horsepower units!! HP

Very nice explanation, flowrate should not be put in the list like "given" , it's the theoretical demand for that specific scenario, given term sounds like it's a reading from the design

Nice video. But this only dealt with the head of the pump. This did not deal with the length of the pipe that the pump has to flow the water through. How can we include the length of the pipe as well.

The diameter of pipe looks too small for that required flow since the calculated velocity is too high!

Perfect. Nothing more to say. Thank you!

Very well explained. Clear and simple - I was able to follow up. yay!

So where does the value 9810 comes from and what is the specific weight ?

I fuckin love you. Graduated with mech eng and needed this in my job!

what about the vapour of the liquid inside the pump, why that term has not been added

The vertical distance between fluid surface and pump intake is sometimes called suction head. So don't you also need to know the elevation of the pump intake to make sure your pump suction head is sufficient? Thanks.

Elevation at suction is 150M, Elevation at Discharge is 200M, Length of the pipe is 300M ???

Short, to the point, yet an explanation that is crux of the entire fluid mechanics. Good Job!

Thank you, great video

where is the consideration of the limits of velocity and pressure drop

Great video, very informative

Thank you sir.

Good

outstanding ever explanation. from Ethiopia

Does anyone wanna point out HE’S ACTUALLY WRITING MIRRORRED!!

Can I have the question of this answer please

@7:18 you state "16.9m of friction loss"... should be 13.9m of friction loss and 3.0m to account for fluid velocity dynamic head..." that the pump has to overcome :)

Hi, does the pump elevation matters? Or are we assuming the pump is installed at 150m ish? But 300m away from the pool?

Good example, excellent explanation but i barely see what you wrote on that mirror

It helped me a lot, greetings from brazil, mechanical engineering

Magnific! What a lesson, I think I just mastered this subject because of how good this video is, well done!

++

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Thanks. Good explanation

How the f.ck did you come of with that flow required value? Really my client is going to ask he needs a pump that can do 0.244003522 m3/sec? Seriously.

I hate how they always start with given information and then jumps into calculation. Why not to make it real life and start with a scenario, explain the situation and then start calculation like you would do in real life. I have seen similar examples through out 4 years of schooling, in real life they are garbage... zero value.

Thanks!

wtf how do u write mirrored

Excellent example.

Amazing video

I think there is a mistake in the static head calculation. If you take the datum point at pump line, 150 m will be minus and 200 is positive, total static head will be 350 m.

Good work, minor mistake at the start where the diameter was squared instead of the radius to calculate the area

He sounds like Mr. Mackey with the mmmkay. I love it!

This was great, please do more.

Excellent work