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
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.
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.
He is writing on glass with his right hand and the video has been mirrored. Unless he has a very unusual shirt pocket, buttons and wears a watch on his left hand.
@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 :)
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.
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.
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.
Short, to the point, yet an explanation that is crux of the entire fluid mechanics. Good Job!
Very well explained. Clear and simple - I was able to follow up. yay!
Magnific! What a lesson, I think I just mastered this subject because of how good this video is, well done!
He sounds like Mr. Mackey with the mmmkay. I love it!
Perfect. Nothing more to say. Thank you!
outstanding ever explanation. from Ethiopia
I fuckin love you. Graduated with mech eng and needed this in my job!
It helped me a lot,
greetings from brazil,
mechanical engineering
This was great, please do more.
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
Thank you, great video
Great video, very informative
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.
Good example, excellent explanation but i barely see what you wrote on that mirror
Thank you sir.
Excellent example.
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.
Thanks. Good explanation
thanks
Does anyone wanna point out HE’S ACTUALLY WRITING MIRRORRED!!
Was viciously scrolling to see if anyone noticed lol
He is writing on glass with his right hand and the video has been mirrored. Unless he has a very unusual shirt pocket, buttons and wears a watch on his left hand.
Amazing video
Excellent work
what about the vapour of the liquid inside the pump, why that term has not been added
So where does the value 9810 comes from and what is the specific weight ?
Thanks!
Hi, does the pump elevation matters? Or are we assuming the pump is installed at 150m ish? But 300m away from the pool?
Most of the time you can ignore suction height because when you're dealing with altitudes in the 100s of meters, a few cm really don't amount to much.
@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 :)
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.
No
no
where is the consideration of the limits of velocity and pressure drop
Can I have the question of this answer please
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 friction factor
Good
The diameter of pipe looks too small for that required flow since the calculated velocity is too high!
Good work, minor mistake at the start where the diameter was squared instead of the radius to calculate the area
he used pi/4 so its correct to square the diameter. Area=(pi/4)(d^2) or Area= pi*r^2😊 Agree?
The pump should be rated by horsepower units!! HP
Elevation at suction is 150M, Elevation at Discharge is 200M, Length of the pipe is 300M ???
wtf how do u write mirrored
Dude this selection seems to be humongous for the given job..need some rechecking in my opinion 175 kw is huge size..
It could be Video is mirrored
@@fayazmohd1017 Well, for that head and power, something not right? but look have never done pumps for oil.
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.
This! I'm looking for real life problems. Not this perfect shit right here🙌
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