Do Pumps Create Pressure or Flow?

Рет қаралды 1,403,423

Күн бұрын

Explaining how pumps produce both pressure and flow with some fun water demonstrations.
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There’s a popular and persistent saying that pumps only create flow in a fluid, and resistance to that flow is what creates the pressure in a pipe. This video goes into some details about how two kinds of pumps work: centrifugal pumps and positive displacement pumps.
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Пікірлер: 2 700

@PracticalEngineeringChannel 3 жыл бұрын

💧 Give me your best pump mantras. I'll meditate on the best one. 📺 Don't forget to jump on this great Nebula/CuriosityStream deal. curiositystream.com/practicalengineering

@coolbionicle 3 жыл бұрын

Pumps are just power supply's for water circuits.

@deathhog 3 жыл бұрын

Pumps propagate proper pressure via fluidic formulation of flow.

@joshuartaylor87 3 жыл бұрын

AHHH EHHH PUSH IT... PUSH IT REAL GOOD!

@SamSam-pw9nu 3 жыл бұрын

Pumps create whichever one your system allows

@ScottTancock 3 жыл бұрын

"Pumps create pressure, outlets convert pressure difference to flow." Most pumps work via a mass pushing against water. At the point of interaction, this is without a doubt pressure. It is only because there is an outlet that the water can move out the way and become flow.

@JahLuvzU 3 жыл бұрын

A good rule of thumb is: "If you want an accurate one-liner saying, don`t get involved in hydrodynamics".

@tomr6955 3 жыл бұрын

A good one liner in itself

@Garbaz 3 жыл бұрын

or electronics.

@asmodeusz28 3 жыл бұрын

@@Garbaz I think this one-liner can be generalized over all dynamic systems.

@gregs7809 3 жыл бұрын

@@asmodeusz28 All nonlinear* dynamical systems

@minihjalte 3 жыл бұрын

It can be shortened to: "If you want an accurate one-liner saying, don't get involved."

@JamesSimmons 3 жыл бұрын

I'm an electrician. Everytime I hear it's not the voltage that kills you, it's the current, I slap them in the face and tell them it wasn't the velocity of my hand that hurt them, but the weight of it. Of course the real answer is it's the MOMENTUM of the hand i.e POWER that hurts you.

@noalear 3 жыл бұрын

Next time someone says that just zap them with static and ask how they survived being shocked with tens of thousands of volts. I've laid fingers across a 225W piezo driver output before. The Dorito's looking spot on my fingers also smelled like Doritos. ~25kHz ~36V ~6A is wicked and I really didn't expect it.

@danieljensen2626 3 жыл бұрын

Kind of gets into the weeds of what is a voltage source and what is a current source. Would be interesting to know actually what average voltage across the body is associated with the fatal 2mA of current through the heart though.

@earache294 3 жыл бұрын

it only takes 1/10th of one amp across your heart " right hand to left foot for example " it is the amps that kill you.. you forgot the 3rd item in ohm's law " resistance". making it possible to take 50,000 volts of electricity from a police taser without dieing, in fact that 50k volts can be maintained by a police taser up to 5 seconds.. yet to person lives just fine no permanent damage. in the end it IS the amps that Kill you not the voltage...

@v8snail 3 жыл бұрын

@@earache294 You couldn't be more wrong. That 50kV is the free-air measurement. Tasers cannot supply more than a very limited current so as soon as the circuit is loaded, i.e. by someones body, the voltage drops to a much lower voltage following ohms law. If a taser could sustain 50kV even under skin load there would be around 50A flowing. That just doesn't happen.

@JamesSimmons 3 жыл бұрын

@@earache294 that's a slap in the face for you. The proper answer to the age old question of is it current or potential that kill you is; YES. These are two measures of one thing; the electromagnetic force. Trying to talk about them as mutually exclusive entities is incredibly pointless.

@jakebrodskype 3 жыл бұрын

As a professional engineer who worked at a water and waste-water utility for over 30 years, let me congratulate you for an excellent presentation. I would really like to see a future presentation on cavitation.

@matthewhall5571 3 жыл бұрын

He did one on turbulence before I think. But obviously that's more general and not pump specific.

@Kublai_jesus 3 жыл бұрын

He has a couple vids on cavitation too

@dominocweber9763 3 жыл бұрын

Its an interesting concept its it

@Daniel-yy3ty 3 жыл бұрын

a little late, but it was just beside your comment... it's a sign :D kzfaq.info/get/bejne/sKl1ZZl7lcm9h3U.html

@TheShoemaker208 Жыл бұрын

I worked at a processing plant with very precise dosing needs, I would too love to see a presentation on pump cavitation. We saw a lot of busted welds on the suction side of pumps, being where I am now I'd love to see an "outsiders" view on why/how this could happen.

@dragonatorul 3 жыл бұрын

"This isn't rocket science". I'm not a rocket surgeon, but I'm pretty sure pumps and fluid dynamics are a big part of at least designing rocket engines and fuel tanks.

@arkie87 2 жыл бұрын

i heard a professor once say "come on guys, this isnt rocket science... though it is USED in rocket science"

@vast634 2 жыл бұрын

Designing a good efficient turbo pump is like 30% of the engineering going into a rocket.

@forloop7713 2 жыл бұрын

Rocket engines are all about pumps and turbines

@cameron3991 Жыл бұрын

I work and design pumps, in line pumps, all different kinds of chillers, VRF systems and some of the hardest electronic plc diagnostics you can do. I quit school when I was 15 never finished and now I easily make 6 figures a year.

@alejandrosrwebmaster Жыл бұрын

@@forloop7713 Reaction engine leaves the room

@idatum99 3 жыл бұрын

This video operates where my interest curve and the supply curve intersect.

@monad_tcp 3 жыл бұрын

@Jeffrey Long that's only important for youtube itself, no one cares about it

@calholli 3 жыл бұрын

I think you mean interest curve and attention curve intersect.

@pleasurewasmine3173 3 жыл бұрын

@@calholli I think he might be just be saying that he likes this content, it’s both interesting and available or supplied to him. Also, isn’t interest and attention about the same in this context, if something has your attention then it must have your interest or vice versa? Lol just speculating

@pleasurewasmine3173 3 жыл бұрын

@Jeffrey Long I think that interest is his demand curve. He is interested in this content ergo he has created a demand for it. Then the supply is this video. Just trying to overthink this, no more than a theory of his message’s meaning haha

@rodmackinnon2995 2 жыл бұрын

Well done.

@jonas1340 3 жыл бұрын

It actually is rocket science too. The big boy rockets all use pumps for propellant flow and thrust control :)) 0:32

@quintessenceSL 3 жыл бұрын

Was going to add how do pumps/fans apply to air? As dad was fond of saying "air is a fluid".

@theophrastusbombastus8019 3 жыл бұрын

Yeah and turbopumps are one of the most expensive and complex part of the rocket (admittedly more the turbine than the pump but still...)

@aritakalo8011 3 жыл бұрын

Yeah. What made V2 (/A-4) possible was it being the first turbo pump powered rocket. Development of rockets was very much development of pumps. One of the major descriptors of rockets is their turbo pump cycle and turbo pump burner mixture. open cycle, closed cycle, oxygen rich staged, fuel rich staged, full flow staged and so on. It is all pretty much about "what is powering the turbo pump necessary to feed the combustion chamber with enough combustibles". Actually add pump or pumps? Again another major "rocket pump" thing. Do Single pump or do two independent pumps?

@taktuscat4250 3 жыл бұрын

@@quintessenceSL I'm thinking of that too but, isn't that is a compressor?

@JK-te2jp 3 жыл бұрын

Really?

@dralexmclean Жыл бұрын

As a retired mechanical engineer, indeed pump selection for industrial applications is far from a simple task. Great video

@josestorino6369 9 ай бұрын

As an aspiring mechanical engineer, I can say it hasn't gotten easier despite all the computational advances in the industry and education. 😆

@t_c5266 3 жыл бұрын

Your new vs old pump mantra is like the "money doesn't buy happiness" one. I revised that phrase to say "money can't directly purchase happiness or friends because they aren't purchasable items, but it can however make your life easier and facilitate many things that do make you happy and will overall improve your happiness versus your position if you didn't have it."

@joeespo177 3 жыл бұрын

Money can't buy happiness, but it makes being miserable easier to tolerate.

@t_c5266 3 жыл бұрын

@@joeespo177 Like I said. Happiness is not a purchasable quantity. However, theres not a single person on this world who would rather be miserable and poor over miserable and rich.

@robertwalsh9904 2 жыл бұрын

Can we get that on a t shirt?

@General12th 2 жыл бұрын

Broadly speaking, I like say "money can't add happiness, but it can subtract unhappiness, and sometimes that's good enough".

@ThisOldTony 3 жыл бұрын

i need that on a tshirt asap!

@PracticalEngineeringChannel 3 жыл бұрын

I've never seen you in a t-shirt!

@huwaflo 3 жыл бұрын

Maybe you are better of with a pair of golves?

@allawa 3 жыл бұрын

Yeah we can't see your shirt so left and right gloves should do the trick

@hattielankford4775 3 жыл бұрын

@@PracticalEngineeringChannel monogrammed dress shirt?

@xandb2641 3 жыл бұрын

Lol advertising

@bartz0rt928 3 жыл бұрын

"Not a great catchphrase, but it _is_ accurate." Spoken like a true engineer.

@altuber99_athlete 3 жыл бұрын

That also happens in physics

@Serahpin 3 жыл бұрын

@@altuber99_athlete This reminds me of the SMBC comic with the evil villain ranting that he's "actually doing something" when the hero calls his work "pure evil."

@gasfiltered 3 жыл бұрын

Technically correct...the best kind of correct

@altuber99_athlete 3 жыл бұрын

@Qimodis Can you share an example? I'm not saying otherwise, though. I was just saying that physicists (and mathematicians) are also rigorous with definitions.

@calholli 3 жыл бұрын

@@gasfiltered Its actually technically incorrect. If you understand ohm's law, think of pressure as the "ohms" of a system; Pumps don't create pressure-- because pressure is actually measuring the "resistance" of flow. The "current" is flow, and the "voltage" would be the capacity rating of your pump. The bigger the pump, the more potential for flow, the more it is resisted, the higher the pressure. Once you look at it that way, its easier to see how pressure is actually on the other side of the equation.

@shortstack4668 2 жыл бұрын

Even though this is aimed a lot more at civil engineering concepts, for me who is studying chemical engineering, this channel is so informative to conceptualize and understand physical setups of a bunch of engineering concepts. Thank you for the content!

@gautammarwaha2903 3 жыл бұрын

“Internet pump enthusiast” - cracked me up!!

@thehoovah 3 жыл бұрын

Its like the argument, "its not the fall that kills you, its the sudden stop at the end"

@pflaffik 3 жыл бұрын

Its not the fall, its the wife who pushed you.

@whiteerdydude 3 жыл бұрын

This may be a fun comment, but it isn't the same. The sudden velocity change is exactly kills you and other objects. So your phrase is actually perfectly accurate. The fall itself is irrelevant to the impact, as it isn't what accelerates you are deccelerates you. Rockets in orbit are falling around the body they are orbiting, yet they gained their velocity by firing their engines.

@hpekristiansen 3 жыл бұрын

@@whiteerdydude Like for most words and phrases there are a scientific definition and an everyday definition(by exemplification). "a fall" is normally understood as the event including losing your anchoring point, falling and landing. So yes - that event can most definitely kill you.

@whiteerdydude 3 жыл бұрын

@@hpekristiansen thehoovah seperated the fall and impact in the figure of speech, so that point is not a valid defense of the phrase semantically speaking.

@josephburchanowski4636 3 жыл бұрын

@@whiteerdydude Well it isn't the sudden velocity change that kills you, it is that different parts of your body under go the sudden velocity change at different rates. If the rapid change in velocity was applied to all atoms in your body equally at the same time, you wouldn't be hurt by the rapid velocity change.

@HATECELL 3 жыл бұрын

This is basically the hydraulic version of the discussion whether an electric source provides current or voltage. And as my university teacher likes to say: "what they have taught you in school might not be wrong, but the full story is a lot more complicated".

@crabcrab2024 3 жыл бұрын

I would guess it depends on the natures of the source and the load. ;)

@solventtrapdotcom6676 3 жыл бұрын

I was about to make the same comment. The correct answer is to ask which exists without a circuit. Voltage/pressure always exists. Flow only occurs when a path to release the pressure is provided. Flow varies depending on resistance. Pumps create pressure. Flow is a byproduct and function of the connected circuit.

@timsmith2525 3 жыл бұрын

It's necessary to create a simple model with which to begin instruction; otherwise, you'd never get to a full understanding. The real world is always more complex then people's simple models of the world.

@nc7432 3 жыл бұрын

@@solventtrapdotcom6676 i think this is a really good way to put it

@solventtrapdotcom6676 3 жыл бұрын

@@nc7432 Because it comes from decades of experience. ;-)

@Exentity Жыл бұрын

I’m a certified fluid power hydraulic specialist (CFPHS), and I really liked how you tackled this topic. Definitely showing it to my friends

@nolesy34 Жыл бұрын

It really coupled to me

@FowlerAskew Жыл бұрын

Rewatching this video after measuring I-V curves for lots of small solar panels is really making the similarities between water and electricity stand out. Photovoltaic output is incredibly load-dependant (that's why we use MPPT controllers for all but the most basic solar setups) and the curve describing the output naturally looks a lot like the pressure vs flow rate graphs you showed of the pumps.

@krisb1999 3 жыл бұрын

I work for a pump company, and I want to show this to all our customers who I swear don't understand pumps. Well done. I look forward to your future pump videos!

@emceeboogieboots1608 3 жыл бұрын

I work for a company that uses pumps and I can see where you are coming from. As an operator we often see incorrect pumps for applications, often due to plant upgrades or changes. Often there are such administrative impediments to making a change that engineers just persist with what is in place And budgets...

@coolhandluke423 3 жыл бұрын

I feel your pain. I'm also a pump technician. My favorite question wothba new pump installation is "will this give me more pressure?" -Well not if your have the same pressure switch or transducer setpoint- happens once a week.

@mattgolman 3 жыл бұрын

I'm a pump designer and I'm showing this to new engineers as part 1 of onboarding.

@midship_nc 3 жыл бұрын

i work for a mechanical seal manufacturer, even less understood...feel your pain lol

@mattgolman 3 жыл бұрын

@@midship_nc From the pump engineer: your work is appreciated.

@poisonpotato1 3 жыл бұрын

When I was in college I understood it as, pumps create pressure which gives fluid energy, difference in pressure causes velocity/flow.

@florisr9 3 жыл бұрын

Just like a net positive force creates acceleration, not the other way around.

@eswing2153 3 жыл бұрын

For gas right? But fluids I thought weren’t compressible.

@JPFighter93 3 жыл бұрын

@@eswing2153 everything is compressible, even fluids and solids. They just need a lot more pressure to compress in comparison to gases. And fluids under pressure also store a bit of energy by expanding their containers.

@y.h.w.h. 3 жыл бұрын

Yep. Nature seeks equilibrium, and we provide power in one form to create energy gradients to drive a flow that can be used for something else.

@praisethyjeebus 3 жыл бұрын

@@eswing2153 a fluid is just a substance that flows and takes the shape of its container, gasses and liquids are fluids. In some cases solids are fluids as well.

@andrewdaumueller5443 Жыл бұрын

Excellent video. It would have been nice to have this kind of thing when I was in college for civil engineering. Fluid mechanics was one of the harder classes for me to grasp. I doubt current students recognize how blessed they are to have access to content like this, bridging the gap between the academic concepts and how they manifest is reality. How about this for a catch phrase: "pumps don't create anything, but rather transfer energy into the system, which manifests in the form of flow and/or pressure".

@philemonsaina2863 2 ай бұрын

Unfortunately they dont realize how Lucky they are

@miketrissel5494 3 жыл бұрын

Boy do I wish we had an engineer like you, 20 years ago. I was an electrician that seemed to have absorbed/dumped into the water system where I worked. (Now retired) They had 4 vertical 1000 gallon / minute Deming pumps that outputted through 8” ID pipe, into a 14” header/collector pipe, sending water from a settling pond, ¼ mile back to the main plant. They kept adding more and more equipment, that needed cooling water, so the engineer kept adding pumps. No matter what he did, the pressure and the volume, ¼ mile away never increased. (Eventually up to 8 pumps) I tried to show him the folly of forcing more water through that same 14” pipe was futile, with an impeller driven pump, but the engineer looked at me as if I was a moron, till he finally got to see the amperage going down on each pump motor as other pumps were manually turned on. (Took 4 clamp-on's at once to visualize it) If you would, show how an ammeter is a good tool to check and set up pumps, check wear on impellers, and the need to set the pumps at 100% load (rather than 70-80%), to get the best balance out of multiple pump systems. Some of the newer people to the field would benefit. Most people see pump curves, and just shrug their shoulders. Setting them up is fascinating though, especially when the mechanic foreman comes to you, with his budget for the year, and asks, which pump is showing the least efficiency, and you can show him with an ammeter, and a pressure gauges, which impellers are wearing the most, in parallel multi-pump systems. I’d be glad to feed you my notes, but it sounds like you have all you need. Thanks, Mike

@dj7291993 3 жыл бұрын

“Do pumps create pressure or flow?” “Yes.”

@okiiPL 3 жыл бұрын

they pump XD

@mrxmry3264 3 жыл бұрын

they create pressure. then the fluid responds to that pressure by flowing.

@joshuaklein8429 3 жыл бұрын

@@mrxmry3264 exactly this. Like how a battery creates a voltage differential in a circuit, a pump creates a pressure differential. Fluid in the high pressure side will need to move to the low pressure side but the pump prevents it from going backwards, so it must move through the system first.

@mrxmry3264 3 жыл бұрын

@@joshuaklein8429 correct.

@tomr6955 3 жыл бұрын

By saying yes that is technically a sound answer. I enjoy doing it too, eg if someone asks me if I like red or blue, I say yes

@Sinyao 3 жыл бұрын

As a chemical engineer that works with pumps on a regular basis, I enjoyed this.

@dkgautlhe 3 жыл бұрын

As a chem eng grad I agree

@happymeal5182 3 жыл бұрын

Stranger on the internet is happy for you

@MrAminalCrackers 2 жыл бұрын

As another engineer, I feel the need to tell everyone that I am also an engineer.

@honiahakaa 2 жыл бұрын

another engineer here i work in boosting station " compression 5002D turbines

@NickShabazz 3 жыл бұрын

This was a really great video, thanks! Loved the graphs!

@markmywords5342 2 жыл бұрын

@gioyu comi Long story short, for the motor it's because of eddy currents. For the motor it has to do with the design of the motor. A motor has an ideal operating range. If the motor is spinning too slow, you're not getting bang for your buck (low flow rate). Too fast, and the fields generated by the motor start to interfere with eachother (eddy currents) and its efficiency goes down... so the idea is to get the correct size motor. If you get too big or too small a motor, you strain the motor and make it inefficient. Good electricity goes to waste if you don't select the correct motor... so it's good on your electric bill as well to find the perfect motor. In regard to the system curve, I think it's because the pressure drop due to friction in the pipe isn't linear. Watch his other vid on pressure and flow. He's got a part with the hazen williams equation.

@nicklewis9639 3 жыл бұрын

Awesome video! I am a project engineer for a large diameter(54” into 92”) sewer project where we bypass 30MGD. I just went through learning all this and this video does a great job simplifying a complicated topic.

@grmasdfII 3 жыл бұрын

"Here in my garage", just bought this new pump, it's really fun accelerating liquid into the discharge line. But you know what I like more than the physics of pumps? Performance.

@HobbyPackRat 3 жыл бұрын

"this is the first of 2 videos... let me know if you want to see more". Grady, i'd watch a video on anything that you passionately explain. You explain complex topics simply with great demonstrations. Any subject is interesting in your videos. Keep up the great work.

@wantu2much 3 жыл бұрын

Honestly he could narrate paint drying, and talk about how the chemical changes to paint drying, and it would be interesting.

@DavidGuild 3 жыл бұрын

Same. I have absolutely no practical use for anything he explains but I still watch all his videos because it's so interesting.

@richardwebb9532 2 жыл бұрын

I worked for town councils doing water reticulation and sewerage for 30 years, your presentation is perfect.

@pasabalyemez1 2 жыл бұрын

As a mechanical engineer in a food plant who's currently working on replacing cooling tower 20yrs old circulation pumps (6 pumps, each of 750m3/h, 132kw) with new energy efficient pumps. Really enjoyed the video! Good job!

@advanceringnewholder 3 жыл бұрын

0:21 Mehdi: "THANK YOU!!!"

@aspecreviews 3 жыл бұрын

LOL...

@meninsilau 3 жыл бұрын

Lol, I know Grady was there. 😂

@pufthemajicdragon 3 жыл бұрын

And now I want a collab

@red1246 3 жыл бұрын

Yes

@rupeshchoudhari5426 3 жыл бұрын

😎 The Rectified Group 🔥

@deathhog 3 жыл бұрын

"Let me know if - . . ." The answer is yes, Brady. The answer will always be, "Yes. We do want to know more. Please, be as in depth as possible." Edit: Oh! Do come and join the argument over pressure vs flow below. It will help the channel's engagement.

@MeriaDuck 3 жыл бұрын

Very true

@ubersham 3 жыл бұрын

I thought his name is Grady

@superjugy 3 жыл бұрын

THIS^

@Averna222 3 жыл бұрын

@@ubersham It is.

@calholli 3 жыл бұрын

But he's wrong... If you understand ohm's law, think of pressure as the "ohms" of a system; Pumps don't create pressure-- because pressure is actually measuring the "resistance" of flow. The "current" is flow, and the "voltage" would be the capacity rating of your pump. The bigger the pump, the more potential for flow, the more it is resisted, the higher the pressure. Once you look at it that way, its easier to see how pressure is actually on the other side of the equation.

@ronmasters751 3 жыл бұрын

Had a long, confused discussion over lunch one day with a friend who needed to pump water into a very high reservoir, and was trying to arrange multiple pumps. This clarifies the whole problem.

@jeeprod1 3 жыл бұрын

Thank you for the informative video. I worked years for a plant in which we did not have a clear understanding of what pumps are capable of. We had to move 10,000 gpm of a slurry containing a crystal formation that centrifugal pumps were hard on. Plus, before we discovered mechanical seals, we were pumping 500 gpm of diluting water into the packing glands, We were burdened with having to repair packing and replacing ballraces on a crippling frequency. At the end of my time at that plant, we had new minds coming on who introduced us to eddy pumps, which changed things . I wish we had youtube and videos like yours to teach us these things back then.

@mguy19 3 жыл бұрын

"Pumps be like: here have this fluid, unless it's too much trouble..."

@jimbolimbobimbo369 3 жыл бұрын

In 10 mins you explained how characteristic & system curves interact better than any text book I was ever shown. As a HVAC engineer who deals with centrifugal pumps quite often, I wish I saw this video during uni. Could've saved me a lot of time...

@michaelwitt7984 3 жыл бұрын

HVAC engineer here too. Totally sending this to my Jr engineers.

@gregholloway2656 3 жыл бұрын

Retired HVAC guy here. Thanks for the great explanation, Grady.

@dieseldork6 3 жыл бұрын

More urban planners need to watch this. Your video describes every day for me while I design wet pipe fire sprinkler systems balancing water flow from the public utilities against what is required to drive the sprinkler system. One other fun fact for pumps is that the less water you have to work with, the less pump you need to add the required flow. Adding a bigger pump to a system with marginal pressure makes for frustrating calculations! Thanks for the video 👍🏻

@erikpetto3672 3 жыл бұрын

I just wanted to say I've discovered this channel somewhat recently, and I'm in love with it. Teachers could learn a lot from Mr Engineering's (I'm assuming his name is Grady Engineering) way of explaining core concepts without relying on cumbersome maths.

@smkymtnsaws163 3 жыл бұрын

As a HVAC/R tradesman, I meet lots of people who don’t understand this. Engineers and tradesman. I don’t fully understand it yet but that’s why I’m here!

@alb12345672 3 жыл бұрын

Heart and blood vessels work the same way. Narrow blood vessels create high blood pressure.

@Lucien86 3 жыл бұрын

People who don't know talking to people who don't know creates great confusion. Also the one who has the loudest voice but knows the least always seems to have the greatest ability to transfer their knowledge and confusion.

@LQC2556 3 жыл бұрын

Reminds me too much of Electroboom's mantra on voltage vs. current: "It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that indicates how much hurting you shall receive, because a touched supply voltage may drop if its current is somehow limited."

@panda4247 3 жыл бұрын

@soiung toiue I think that it's something like "it's not the speed that kills you. It's the sudden stop". And also, from the Discworld books "I don't fear heights. I fear the depths below them."

@do_hickey 3 жыл бұрын

Well done! As someone who does TIC for fire pumps, this was incredibly well put together. You probably know more than I do about the topic, but I have lots of experience with pumps if you want to reach out for any info!

@nostrilnick 3 жыл бұрын

I spent almost 20 years as a mechanical engineer at various pump manufacturing companies designing/developing centrifugal pumps for the water/wastewater and chemical processing industries. This video was a great primer for people getting started in understanding pumps and fluid transfer principals. Well done. Your civil engineering videos almost make me wish I'd studied that instead!

@stevenlynch3456 Жыл бұрын

Hehe great "primer"

@Konenstro 3 жыл бұрын

that composite video of the three beakers was great :)

@neilsucks 3 жыл бұрын

"pumps impart flow and pressure to a fluid in accordance with their characteristic curve and the corresponding system curve." great mantra. will meditate on that

@roccodifranco7866 Жыл бұрын

I worked for a water utility for 38 years as a union millright Hackensack water , United water , SUEZ water , installation, repair, and maintenance, great video for people who do not know what pumps do ,the Engineers and my company constantly Installed pumps that did not perform as advertised

@ScamstinCrew 3 жыл бұрын

would love to see a video covering impeller pumps. I worked at a valve shop where the serviced crude oil pumps and they used impellers to "pull" the fluid though. the multi stage versions also did a "crossover" so the pumps impellers pushed or pulled on each other instead of generating a huge thrust load to one side. might be an interesting episode.

@ydihtty 3 жыл бұрын

"Do pumps create pressure or flow?" "Yes."

@Tjita1 3 жыл бұрын

"Yesn't."

@keith_5584 3 жыл бұрын

They also pump moonrock gel, Blue bouncy goo, and superfast orange hydrocarbons. May contain traces of TimeTravel, forward and backward.

@jedidiahwest4619 3 жыл бұрын

Brings me back to my WW plant managing days. In a small town, we all had to think like engineers because the city was too cheap to pay for a real one. Every time I had the chance to talk to an engineer, I would soak it up.

@yoshyoka 3 жыл бұрын

Very nicely done: you have a talent of making complex topics easy to understand. There is one complication more: positive displacement pumps which make use of elastic elements (diaphragm, persitaltic etc..) will also provide different flows at different pressures; for some the difference will be tiny, for others quite significant.

@kamilgorecki9898 Жыл бұрын

Pump as an active element of pipes system provides delivery of the mechanical energy (with respect to time - power) to the fluid which is given as Q•H (for one unit of the specific weight of the fluid). Centrifugal pump was considered in the video thus shape or geometry of the impeller/rotor is strictly associated with its specific speed coefficient (kinematic or dynamic). These types of machines increase kinetic energy of the fluid (also momentum) when non zero net torque is acting on the shaft - see Euler's equation... then most of the kinetic energy is converted into potential energy (geometric elevation & static pressure) as diameter of outlet increases. Total head is a function of discharge H(Q). Briefly speaking, pump is an active source of energy for fluid and pipes as passive elements consume it (dissipation). Thus, actual resistance of pipes (throttling, roughness, length, diameter, elbows...) determine flow rate for a given source of the energy - pump (related to rpm). Thinking in terms of the energy and conservation laws is always usefull

@andrewjvaughan 3 жыл бұрын

I must be pumped for this video because there was 0 resistance from me.

@moeron9172 3 жыл бұрын

ba dum tsss

@gorillaau 3 жыл бұрын

No pressure on releasing the second video from me, either.

@gus473 3 жыл бұрын

And the puns start flowing.....!

@gorillaau 3 жыл бұрын

@@gus473 But the pressure to find another pun increases over time, and the flow decreases accordingly.

@erwinli6962 3 жыл бұрын

So no head?

@nwmancuso 3 жыл бұрын

2:53 “And now through the magic of buying 3 of them!” -TC

@lightningdemolition1964 3 жыл бұрын

I immediately thought of Alec too.

@DoctorMangler 3 жыл бұрын

As a plumber I really appreciate this video. You opened my eyes to new ideas, and I love pumps too. I work with hydronic pumps so we go for efficiency and longevity rather than high flow or head. There are issues however with placement that can impede or enhance cavitation and also entrapped air removal through traps or high points. Thanks again for all these great videos!

@asterope1604 3 жыл бұрын

I'm an engineer in a pump repair shop and make and fit mechanical seals to them, this video was fantastic. Plus to prove pumps do create pressure, it's in their design, the volute has that spiral shape that once the product has been moved off the impeller eye to the walls of the volute it follows this spiral to the discharge and as the volute opens up the fluid builds up and loses flow and builds pressure before leaving the discharge, which is why the suction always larger than the discharge, to create pressure.

@OADINC 3 жыл бұрын

That graph at 3:20 is amazing no longer does anyone need to convert the units I love it!

@ARCANEmateCLAN 3 жыл бұрын

If only such a scale was used in industry.

@stevenstart8728 3 жыл бұрын

Most of us don’t have to convert because we a smart enough to use metric instead of the system that was invented by people who married their own cousins.

@IstasPumaNevada 3 жыл бұрын

"Let me know if you want to see more" I'd love to see more! Seriously, your channel is one of my favorites.

@KamiInValhalla 3 жыл бұрын

Love this channel. The insightful content, informative experiments, and smooth delivery. Hard to beat.

@lukeprivett9867 3 жыл бұрын

PLEASE MAKE MORE THAN 2 PUMP VIDEOS GRADY

@millomweb 3 жыл бұрын

'Chemical engineer' - such a vague title. What is the difficulty in selecting a pump ?

@stefanfl1200 3 жыл бұрын

Hi, I work in an refinery and work with pumps, turbines and compressors every day. You made a very good video, couldnt explain it better :)

@Patmccalk 3 жыл бұрын

Honestly, who dislikes a video that’s completely educational? Outrageous

@SonsOfLorgar 3 жыл бұрын

Usually a person with religious or conservative convictions or both ;)

@Patmccalk 3 жыл бұрын

@@SonsOfLorgar “you can’t know that because GAWD”

@--_DJ_-- 3 жыл бұрын

Probably people who don't like his delivery. I didn't really enjoy the video, but I wouldn't go as far as giving it a thumbs down.

@revimfadli4666 3 жыл бұрын

@@SonsOfLorgar i like the irony of wild guessing here

@simondwilkinson 3 жыл бұрын

It's educational but not the best quality. He doesn't actually explain that much, just says "pumps are more complicated than you thought" in a long winded way. He shows the characteristic curves, but doesn't attempt to explain why they have the shape that they do. The conclusion is literally just "the flow rate depends on the whole system, not just the pump".

@SilentNightttt 3 жыл бұрын

Seriously one of the best channels on KZfaq with easy to digest videos that are concise and very well made. Thank you sir.

@akjarni 3 жыл бұрын

I would love more videos on pumps, because I adore hearing people talk about topics they're passionate about.

@nebulous962 3 жыл бұрын

I am pumped!

@revenevan11 3 жыл бұрын

I thought immediately of the popular (and less than correct) voltage/current saying that you mentioned when I saw the title. Excited to learn more about pumps in this video!

@Balar9 3 жыл бұрын

Interesting to see this video pop up today. I just finished my Fluid Dynamics for Fire Protection class this morning. Even though we learned about pumps several weeks ago, it's always interesting to explore some concepts again.

@ithasbeenwritten222 3 жыл бұрын

I’ve had a lot of friends who are engineers, i myself am a mechanic, and I always smile when i see Grady puts little eyeballs on the action pieces knowing full well how special it is for an engineer to humanize things for the rest of us emotional non-Vulcans. It’s a special breed who can bridge that gap. 🖖🏽 And amazing how much of a difference they make! 👀

@quandarkumtanglehairs4743 Жыл бұрын

Yeah that's actually really cool and helpful

@c31979839 3 жыл бұрын

More pump videos! Any video topic you're passionate about is a video I'll enjoy watching! Your passion and interest comes through so much on these videos.

@busterbeagle2167 3 жыл бұрын

Grady, it’s like the old saying Build it and they will come. Upload it and I’ll watch. Edit- and give it a thumbs up. Lol

@tomr6955 3 жыл бұрын

And there you've just hit on another hot button issue. Does demand get supply or does supply get demand?

@Nosirrbro 3 жыл бұрын

@@tomr6955 The whole concept either way is kinda outdated and too simplistic to be genuinely descriptive of reality

@busterbeagle2167 3 жыл бұрын

@@Nosirrbro wrong. What device are you using right now ?

@busterbeagle2167 3 жыл бұрын

@@tomr6955 supply TRIES to meet demand

@jcprov9481 2 жыл бұрын

Can we take a moment to pay respects to the sheer amount of time and money spent on these models to demonstrate the concepts in these videos? They are part of the reason I love this channel so much.

@bensimmons8974 3 жыл бұрын

The simile at the end of the video is so genuine. I LOVE IT!

@hellohypo2009 3 жыл бұрын

Really classy break with the fountain with your melody in the background. So grounding... such soothing... many subscribe.

@user-bo2cu1dt8j 3 жыл бұрын

Great video Grady, your content always consolidates what I learn in class but you deliver it with much more enthusiasm which not only makes it more interesting, but helps my understanding of topics so much

@cjjoyce27 3 жыл бұрын

What a wonderful video. I've only recently learned to think about pumps and fans correctly, this was a great way to describe their operation.

@stevenmiller2837 3 жыл бұрын

Enjoyed the video! As a Merchant Marine deck officer, I learned about pumps mostly with an eye towards tanker operations (and ballast operations).

@specific_pseudonym 3 жыл бұрын

"Internet pump enthusiast" ...yes, there are a lot of those out there XD

@timseguine2 3 жыл бұрын

I think we are the wrong video site for that though

@ericv00 3 жыл бұрын

@@timseguine2 You might be surprised.

@ryanfitzgerald4408 3 жыл бұрын

I was literally searching your channel yesterday for this video and it didn't exist yet. Thank you sir!

@ellisphotographyvideograph8171 Жыл бұрын

Nice job. Enjoyed the video. The pump creates differential pressure which in turn produces flow just like a difference in voltage potential will produce a current. That’s how I was taught.

@Usmang786 2 жыл бұрын

Thanks man with the help of your video I have manage to to clear my problem my4 pumps was disabled out of order when I was retaining water to the 11th floor with the help of this video I have manage to calculate the flow and pressure rates and now my pumps is working fine

@clydecessna737 3 жыл бұрын

Nice to hear a presenter with good diction and memorable presentation techniques.

@What_was_wrong_w_jst_our_names 3 жыл бұрын

It’s not the failing of the parachute to open that kills you. It’s the hitting the ground at a high rate of speed.

@LeScratch89 3 жыл бұрын

"If your parachute fails, you have your whole life to figure it out."

@diggymgee 3 жыл бұрын

"Guns don't kill people, people kill people!"

@justayoutuber1906 3 жыл бұрын

@@diggymgee loss of blood pressure kills people

@buckeyebeliever3397 3 жыл бұрын

More pump videos please! As an EE, I interact with pumps from time to time but need to know MUCH more about them.

@chatrkat Жыл бұрын

Another excellent and educational video. In addition to your first class production quality, I’ve been enjoying the topics you cover. This particular video was on great interest to me as I’ve been playing with pumps since a small boy when I first watched my dad repair a 1958 pedestal sump pump in our basement.

@jajssblue 3 жыл бұрын

Pumps impart energy/work. That is expressed as both flow and pressure in different parts of the fluid path.

@jajssblue 3 жыл бұрын

I think part of the confusion might come from the conflation with discussions of incompressible and compressible fluids. Water is taught as incompressible, which is practically true and so people jump to the idea that a build up of pressure can't be what is occurring. Which is ironic since hydraulic pressure is probably an intuitive concept until they start studying fluids at a college level. Just goes to show how diverse and confusing the subject can be at first when you're learning about different aspects instead of thinking about it as an integrated whole.

@andrewh2341 3 жыл бұрын

Totally agree, the Bernoulli eq (assuming simplified models) says that pressure, head, and flow are all basically the same and interchangeable. It’s just conservation of work and energy.

@braydenthomas146 3 жыл бұрын

Geez Grady... I wish you would've posted this video 2 days ago. I just submitted my capstone project designing a pump system and I could've used this :D

@marcusfelipe110 3 жыл бұрын

Great video, thank you! Now I understand better the displacement pumps

@olegvelichko1659 3 жыл бұрын

As always - thanks for the quality infotainment! Love the content!!!

@1stGenHomestead 3 жыл бұрын

I've been working towards my distribution four water license and my collections 3 license and these videos have really helped me

@isbcornbinder 3 жыл бұрын

For or four?

@1stGenHomestead 3 жыл бұрын

@@isbcornbinder four

@joelmork4118 3 жыл бұрын

Nice video! I hope your next video about pumps includes something about pump cavitation!

@roBLINDhood 3 жыл бұрын

This was profound and these physics have been at the center of all three of my different professions. (Electronics, HVAC, automotive)

@gauravrade8908 3 жыл бұрын

Man you just nailed it. YOUR CHANNEL DESERVED THE NAME YOU HAVE GIVEN TO IT

@joshuaalan7580 3 жыл бұрын

"It's not the volts that kills you, it's the amps - the voltage just assists in determining how effectively those amps are in fact killing you"

@7784000 3 жыл бұрын

No but the voltage determines the Current that is running through your boody as long as the power supply can deliver the current while the current is also determined by your bodys resistance.

@heyhoe168 3 жыл бұрын

It's not the volts that kills you, it's ignorance.

@seraphina985 3 жыл бұрын

@@7784000 But still the fact remains the voltage determines the current that flows. Of course, the voltage can and absolutely will change if connections within the circuit change as this will disrupt the distribution of charges within the circuit. Sure this will be more noticeable if the sink being added or removed is large compared to the sources within the circuit. This is of course why voltage will drop sharply if the charge is being provided by a relatively limited source compared to how much current is able to flow through the new sink as the source simply cannot maintain the charge at that rate of charge dissipation.

@jonka1 3 жыл бұрын

Not exactly, the voltage determines how many amps are killing you.

@musschootski 3 жыл бұрын

You should say: "Pumps impart energy on the fluid they interact with."

@Danmemer89 Жыл бұрын

i love your videos! they're so educational and finding out we live in the same state is a funny little bonus! please keep up the great work!

@trharrington22 2 жыл бұрын

8:23 the excitement in his face and voice when he gave us the catchphrase

@pwtech6767 3 жыл бұрын

Cool! Do positive displacement pumps next? Or if you REALLY want to have fun trying to figure out what category to put it in, look at a Disc Pump from Discflo. Great way to instigate a class-wide argument in any fluid dynamics or pump-related engineering class. Edit: If you want to borrow a couple, I've got a few types of positive displacement pumps that I can drop off in your garage. Also know some folks who have clear cut-away (working!) progressive cavity, rotary lobe and maybe other types of positive displacement pumps if you wanted to do a video on different types.

@vespermace 3 жыл бұрын

As a Civil Engineering student trying to get through my hydraulics modules, please come lecture us, our current lecturer is just obsessed with is postgrad students :/

@SwissTHX11384EB 3 жыл бұрын

Thank you for adding metric to your graphs. It's very helpful :)

@tammoratya9504 2 жыл бұрын

looking for a video explaining this and i love how you make it so any questions i have about the topic sound perfectly reasonable and not like im an idiot for not getting it the first time

@de0509 3 жыл бұрын

This needs a "Galaxy Brain" meme to differentiate the different tiers of sayings on how pumps work

@brown56765 3 жыл бұрын

His "I love pumps" has some mad "I live refrigerators" energy XD

@millomweb 3 жыл бұрын

That's cos they be heat pumps ;)

@heeryanus 3 жыл бұрын

Wisdom taught me when doing work in the process and energy department of my university: If your setup doesn't leak, its a bad setup. Some very good setups in this video :)