How to DETERMINE the OPERATING CURVES of a CENTRIFUGAL PUMP: 2nd part data processing - eng. subs

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This video aims to demonstrate how the experimental data collected in the first part (while performing the lab test) have to processed, so to obtain (graphically) the studied pump operating curves.
The proposed method aims to provide quick and easy option to engineers (mainly directed to students) on how to test a pump and do the data processing, so that to obtain graphically its operating curves. Thus, the most important is to catch the trends of the studied hydraulic relationships, instead of seeking for super high accuracy of the results obtained, i.e. the tutorial is with academic and not comercial function.
THANK YOU FOR WATCHING THIS VIDEO!
Linked videos:
• How to DETERMINE the O...
(where it is demonstrated on how the processed data has been collected by measuring)

[@Predator-zx2tv]

Great performance! Well done!

[@roxanaalonso4794]

Good example and is presented into attractive way! Thanks for sharing 👍

[@jafarsafari2771]

Good video presentation!

[@tommyhurst573]

I just followed the instructions and curves are plotted. Thanks 😊

[@rasimrasim7396]

Waitng for third part

[@gali4kaa89]

Thanks, i am going to use it

[@mariacapone9302]

A good example! 👍

[@sebastiankurtz8967]

It looks useful. Does really the pump works at about 50% maximum coefficienct of efficiency?

[@silver_fox8605]

Yes, even less than 50%. For a new pump the manufacturer gives 52% efficiency when working at its nominal operating point. However, this pump has been in exploitation for years and thus this value is lower. With time the pump operating curves are changing.

[@engineer7775]

Very helpful. However, I have a question - where did you get the motor efficiency diagram?

[@silver_fox8605]

Some motors provides such information in their passport (catalog data). This particular one is obtained after testing. In case both these options are not available you can assume that the motor coefficient of efficiency remains constant (approximately 0.8). When the main purpose is just to catch the trends (for academic and not comercial use) this will not have too negative affect on the results.

[@engineer7775]

@@silver_fox8605 Thasnks

[@engineer7775]

@@silver_fox8605 I've got it

[@silver_fox8605]

Good in this case is that the method is applicable for all the existing models and brands of pumps, such as: #Grundfos pdf.directindustry.com/pdf/grundfos-5420.html # Riello www.riello.com/international/products/heating-catalogue-products #Sulzer www.sulzer.com/en/products/pumps/pumps-by-type #Danfus www.danfoss.com/en/products/dps/pumps #Gouldspumps www.gouldspumps.com/de-DE/Home/ #Wilo wilo.com//en/overview.html #Flowserve www.flowserve.com/en/products/products-catalog/pumps/ #KSB www.ksb.com/en-be #Ebara www.ebaraeurope.com/ #Schlumberger www.slb.com/ #Ampco www.ampcopumps.com/ etc. One the test system is designed it takes 10-15 mins to perform the test (quick and easy)!

[@karimebrahimi1259]

Pergect done!

[@conradbeeslay6352]

💯 points!

[@suzanfatih5341]

Cool 😎 🆒️ 😎

[@markuswest8968]

Thanks for sharing

[@silver_fox8605]

welcome

[@sahameghnad8278]

I was wondering where did you get the measured data, but then saw that there is a previous video connected to this one.

[@silver_fox8605]

Yes, first you have to watch the previous video that demonstrates the collecting of measured data. You can watch it here: kzbin.info/www/bejne/ZnzOi6psgqh-gZI

[@dimitardimov9590]

Well done!

[@christoferjustice9985]

Video is good, but why not the three operating curves combined in a common chart?

[@silver_fox8605]

Thanks for the good proposal!

[@agbulrahmanmehmed929]

Nice!

[@gastondesjardins3888]

🍹🍹🍹

[@osmanhasani7533]

Super useful demonstration 😎

[@gustafjohanson2879]

Good tutorial 👌

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👏👏👏

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[@mariacapone9302]

Super! 😎

[@quincygillian217]

🤩🤩🤩

[@BrianSmith-ic1nw]

Why the last three columns (15, 16 and 17) in the table stays empty?

[@silver_fox8605]

Because it has to be used just in case of recalculation of the main pump operating parameters, i.e. when the pump shaft speed of rotation has changed during the test. In this case, using VFD enables to keep its value almost constant, so recalculation is not necessary and thus the last three columns stay empty.

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OK, video is interesting! Forza Slavia Praha! :)

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:)

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Useful ;)

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