Nice, I only had a vague Idea about this topic. Thanks for the wonderful explanation.
@ProcesswithPat
3 жыл бұрын
Thanks AJ! Yes I’ve also only had a basic understanding of it, but doing it made it easier to appreciate.
@danishiqbal3838
2 жыл бұрын
I am shoked to see just few hudred views over this tremendous video!!! literelly I havent seen any better explaination anywhere
@ProcesswithPat
2 жыл бұрын
Hahaha thanks. Yeah, it’s one that I’m probably most proud of, and I was learning as I made it. I think it’s probably a little niche. But the point is I’m not chasing views, if there are a handful of people that really benefit then I’ve achieved what I wanted to achieve! Thanks for the nice comment.
@arvydaslatvenas8781
Жыл бұрын
Nice to have it premiered on my birthday 07/19. Feels like a great present for an engineer :)
@mikefochtman7164
Жыл бұрын
Great discussion about control valve characteristics. I'd worked with several control systems and getting the linear behavior was always a key part of getting good control performance. One notable problem was a control valve to regulate steam flow to an auxilliary turbine that was coupled to a centrifugal pump where the end goal was to control the flow via pump speed. So first the system curve, then the pump curve, then the hp vs pump speed, then steam flow vs turbine power developed, then finally steam flow vs valve percent opening. Ugh... So naturally, we did some manual tests at various points, plotted things out and made a 'little black box' of electronics that converted linear flow controller output to the desired valve-open command. Process flow control systems have always been fascinating for me, and I've enjoyed your videos on the topic. Thanks you.
@israelmoya7702
6 ай бұрын
Pats, how would you go from a % opening vs CV plot to a % opening to a flow rate plot. That is the part that confuses me. Also would the CV only work for one specific pressure drop?
@patrickgijbels7985
Жыл бұрын
Great explanation, I showed this to my students to help them understand this topic. Nice job !
@acopp6891
3 жыл бұрын
I remember studying this particular topic during my chemical engineering course and I didn't get very much of it. This was very well explained and understandable
@ProcesswithPat
3 жыл бұрын
Yes, I certainly had the same experience. It is something that is fairly easily demonstrated and hopefully sticks, rather than needing someone to memorise it and parrot it later (which I was doing before going through this exercise). Thanks for the comment.
@vtbhanukiran1231
2 жыл бұрын
Great explanation. I am a Quality GM with Doosan, and i am able to understand Control Valve design. Thank you very much for your explanation and hard work.
@ProcesswithPat
2 жыл бұрын
You are most welcome! Glad it helps.
@Ryarios
Жыл бұрын
One other thing to keep in mind is that Eq% works better when you have a normal flow close to the low end of the valve. For instance, say you normally need 2 gpm of flow through a valve, but there are times you want 10 gpm lose when you want to quickly fill a tank but after doing so, you need much less flow to maintain that level. The Eq% gives you better resolution and finer control at the lower flow while allowing you to still have high flow when you need it. The quick opening trim can give you better resolution and finer control when your normal flow requirements are close to your maximum flow rate.
@naturalnewbie98
2 жыл бұрын
You are a gentleman and scholar! Excellent explanation. I love workbooks like this, I have added your workbook to my toolbox. greetings from a test engineer.
@ProcesswithPat
2 жыл бұрын
Cheers man, thanks! Hope it’s useful!
@panoskb9405
3 ай бұрын
Hi Pat, in the formula of Cv value, where the number 27,3 comes?
@TheHinaiibrahim
2 жыл бұрын
Excellent way in explaining the concept. Thanks for making this video.
@Truth_stings
2 ай бұрын
Excellent explanation. Thank you!
@JasonMitchellofcompsci
9 ай бұрын
Nice. A question. You said that some of the valves had higher operating cost. But if we are hitting the same targeted flow of 30 with all else being the same in the system, then we have the same delta-P across the valve to achieve it. Isn't the pressure capacity of the pump vs the chosen operating pressure what selects for cost? Though I never studied chemical engineering and I'm a college drop out so I may have it wrong.
@khidrie1
2 жыл бұрын
Great video, thank you. I finally understood why we use equal percentage not linear 😁
@ahmedabdulamir6190
Жыл бұрын
How did you calculate the value of 0,7 when you choose 25% ▲p of the total pressure drop i didnt get that? could you please explain that or some one :)
@mostaphanaghibi480
Жыл бұрын
Thank you very much for this great and useful video.
@abilashjohn1532
Жыл бұрын
Nice ,,such a great explanation about this topic,,,,thanks
@CharleyGR
Жыл бұрын
Awesome video. Thanks for sharing this
@pedrochirivella2473
2 жыл бұрын
Thanks for creating this video with a such a great content. 👍🏻 I have subscribed to your channel. Keep it up 🙂
@ThePriyankanair
Жыл бұрын
Wow so nicely explained 👍
@garymok1839
2 жыл бұрын
You are awesome! Thanks for sharing.
@brahimizohir4411
Жыл бұрын
Gréât explantation thank you sow mutche
@outofcontrol4499
2 жыл бұрын
Brilliant. Nice, clear explanation. Excellent graphical representation. The background "music" almost drove me out.
@ProcesswithPat
2 жыл бұрын
Thanks a lot! And thanks for the feedback. Too loud, or style? Or both?
@outofcontrol4499
2 жыл бұрын
@@ProcesswithPat Repetitive?
@ProcesswithPat
2 жыл бұрын
Appreciate it!
@jyochithanil3254
10 күн бұрын
Damn good explanation
@affanbhaijaan65
3 жыл бұрын
Informative
@abdessamedghettas7167
2 жыл бұрын
Many thanks great videos
@ali200800500
2 жыл бұрын
good video thanks
@ProcesswithPat
2 жыл бұрын
Thanks a lot! I was quite pleased with how this one turned out.
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