Great video as always! Kudos on making the add part of the video as entertaining as the demonstration part! Googly eyes! Are you planning doing more electric engineering videos? Perhaps on topics like wireless power transfer or high frequency power transmission?
While I really enjoy your more theory-based videos (the recent power grid one was excellent), the practical demonstrations are so good to watch. It's like being back in school science classes, with more googly eyes (an obvious improvement!). Keep up the great work!
"Hi, I'm Grady, and in this episode I build a state wide power grid and introduce fluctuations in the frequency to show you how that affects the stability and how, when introducing to much, it can cascade into a total grid failure."
@@hkr667 I can totally see him making a model town and a model working power station and everything just to simulate. Like that model bay in SF for a dam that was never built for reasons.
Those giant-arse, ⌀3m pipes around hydroelectric facilities and pumping stations? Those should have googly eyes, too. Oil refineries might be tolerated more if they put googly eyes on those big pipes.
Either water or electricity are handy ways to explain software design, to answer the question “So what do you do?”. “Well, I’m kinda like a plumber for data flow.”
I studied mechanical engineering, in my mechanical system class they tought us that fluid networks are like electrical wiring and in my electrical fundamentals they said think of electrical network as fluid piping, I have never denied derrida's deconstruction since🤣
As a firefighter engine operator I use friction loss calculations a lot. Nozzles are designed to have a certain pressure on them to form a proper stream, this means calculating your head loss for the given flow. I might use this video as an introduction to pump operations, you explain friction loss well.
My dad was a firefighter and I remember (from 50 years ago) listening to him and his buddy chat about their new pumper, flow, lift, nozzles and all that good stuff. I was in high school and it was a lot to try and wrap my head around. Turns out firemen needed to know more than how to drive red trucks and spray water on stuff.
Angus Fire in the UK used to make available a free tool for calculating the head loss in firefighting pipe. - Looks like it's still a thing - used to be a downloadable application, now it's a web thing.
@@larryg3326 It can get complicated. Growing up I loved math, didn't realize how much math was involved in firefighting until I took a operator's course. I am now a full on pump nerd, having complicated what if conversations about pressure, friction and throughput of differ t trucks is definitely something I enjoy doing with my fellow pump nerds.
The cardiovascular system almost seems like a plumbing cheat sheet - biology doesn't use elbows, because it can't afford "minor losses" of inches of pressure!
How can you explain increased blood pressure through vasoconstriction with the venturi effect stating that a narrower pipe leads to less pressure on the walls of said?
I really wish this channel existed in 2014 when I was studying hydraulics. It's not really difficult, but it would surely help. Also I wish there's another version of Grady that's into Geotechnics, because I really struggle with it even today!
Don't be shy in tutoring, and asking for it to be explained in different ways. Feynman said if you can't explain it to a 7 year old, you don't understand it yourself... something like that
The neat thing about minor losses is that it applies to our body as well. Where blood vessels split and bend is usually where we have the highest pressure, which is why ruptured aneurysms tend to happen there (e.g. split at the descending aorta in the stomach, split at the carotid arteries in the neck, split of the circle of Willis arteries in the brain). Changes in diameter is also where turbulence happens, which is why blood clots tend to settle in certain places (e.g. when veins dump blood into the heart, or when small veins transition to large veins).
Nice video, I appreciate your efforts to give an "intuitive understanding" about familiar stuff like fluid in pipes. My 9-year-old and I make a regular habit out of these videos, thanks.
I am a Water/Wastewater Engineering at a Consultant firm, and you nail this explanation. I might even use this for new analysts that are having a hard time with hydraulics.
I loved the smirk when talking about units. In hydraulics specifically there are some crazy differences when you change units. It's so easy to mess up calcs by just using the wrong units, even within a unit system.
Especially when dealing with unit conversions or the lack there of. Like when you change settings expecting feets and it changes in meters... Even space projects have been failed because of unit conversions.
@@Lady-Lilith And I as a technical drawer in a European country wonder how much time lost when working with US produced equipment to get them to fit and connect to European installations. Not just the dimensions of fittings and threads but the 110V 60Hz supply needed for some equipment. Whenever you can't use a inch based fitting and has to get or worse make a conversion connector. I too wish the US followed the metric system.
@@kholdanstaalstorm6881 I worked in Q.A. in the Auto Parts Supply sector for decades, and then, in semi-retirement, in a shop that made parts for locomotives, oil and gas and military here in Canada. The auto parts supply was easy, as almost all our exports were to the U.S., and I more or less grew up in the Imperial system. Later, in the smaller shop, everything was in metric. It was a bit of a shift for me. It's easy to convert, it's simple math. But it's hard to 'imagine' systems you weren't raised in. For example, I can 'imagine' the feel of a pound in my hand, but not a kilo-- if that makes sense. It doesn't really impact much, except maybe confidence in the matter at hand. In the end, while I think metric is easier, what's really critical is standardization. I'd use cubits if the rest of the world was using them.
Also, if you ever want to unmask an American tourist posing as a Canadian in Europe, ask them what mm socket can be used on a half inch nut. Canadians know.
Fun fact: in refineries and chemical plants a significant amount of the noise is caused by these principles. Flow rate, Reynolds number, pressure, pipe material and wall thickness work together to cause audible sound. This also helps explain why some pipes are bigger than what the calculated flow would require. Great channel btw
I’m a mechanical engineer as well, and understand all of these concepts, but I wish I had a professor like you in college, it would have made my life so much easier! Thanks for this!
Wow, I actually happen to have this in my hydraulics course in university right now. I'ts the first year and I've had trouble understanding some of what the professors tell us, but this helps a lot. Thanks!
I think it's hard for professors to think and explain practically, because they are in an isolated environment away from real world applications. I did EE, and never learned to solder until my first job.
I'm a plumber in Canada and the units you are using in your video are actually very alive in the field. I use Inches of water column on my manometer to calibrate furnaces' gas pressure.
Grady, I am a huge fan. I want you to know that I have been watching your videos for 5 if not 6 years. I'm currently finishing my ME undergrad. You have inspired a generation of engineers, and your simple but awesome passion for what you do will continue to grow through my generation. I'd just like you to know that you have played a part in my life, and I'm sure many young engineers life. I hope you take pride in knowing your inspiration-- in some way or another-- will lead to revolutionary breakthroughs in our world. Even If you didn't personally engineer new Carbon Capture technology, Interstellar space ships, or next-gen Nuclear reactors I WILL and WE WILL, and you will have played a role in that Thank you for doing what you do.
I teach university-level fluid mechanics & hydraulics courses, and I just have to say that I come back to your videos all the time. You do a truly fantastic job at demonstrating theory and relating it to practical applications, and I draw so many teaching ideas from your content. THANK YOU!!
@@douglasharley2440 I am passing all my classes. But I'm not learning anything. I'm just there to memorize something to later remember it and never use it again.
@@heavygaming6596 Yeah, best to change your outlook. Take advantage of these classes, you will most definitely need some of that knowledge in your life.
@@CharalamposKoundourakis I do take advantage of what I need. I study economics and law. I chose this course for that purpose but for some reason we have p.e for example. Now during online class we are practically doing yoga in our living rooms in a zoom call. I don't need this. On the other hand I do study programming and a bit of engineering on my spare time and this is where channels like this one become so useful. I'm learning something I want to learn and will actually use. Unlike math equations I need to remember.
PE channel makes me wish i studied engineering in college. then i remember that everyone on the engineering track went five consecutive years without sleep because the workload was absolutely absurd.
@@derschwartzadder sure, but we also have a responsibility to treat these students like humans. they deserve to learn in an environment and at a pace that isn't going to destroy them mentally, physically, and financially. and the rest of us deserve to have educated engineers who didn't spend their entire college life as sleep-deprived zombies. exhausted students cannot learn. engineering students need more time to study without destroying themselves in the process, and the financial support to reduce the pressure of graduating as soon as possible and get rid of the looming threat of lifelong student debt if they wash out. same goes for medical students and other similarly demanding post-secondary fields where public health and safety is in their hands.
You're right, it absolutely is absurd. However, the degree is well deserved and, if anything, makes the transition into the workforce very easy as life feels like it's on easy mode in comparison 😂
I work with hydronic heating contractors and it’s amazing to me how very few of them seem to understand pipe size and flow. I see it almost daily that they drastically undersize their heating pipes and then in winter don’t have enough heat at that zone, despite having a large enough boiler and radiator.
Wow, it took me 4 years to complete btech and learn nothing. If we get to study like this, learn the entire course in 1 year with 20 times more knowledge. Never knew pipe pressure works in such a manner. Keep up the good work.
I love how concise your videos are. I’m a sophomore engineering student at Purdue and see a boiled down explanation really helps me wrap my mind around a concept.
This video couldnt be timed more perfectly for me. I am in the middle of renovating my home by myself. This includes redoing plumbing, and I only had the suspicions that more turns equals more pressure loss. But thanks to this clear explaination I know that I have to take the shortest route (in terms of turns) to my shower for minimum flow loss.
Mr Grady, I remember you asked in either a video or in your comments about what we would like to see more of. I responded with something along the lines of "more fluid stuff, maybe show how you make your demonstration contraptions in your garage, show some more equations, and maybe some key books you use". You responded with this video. You have everything that I mentioned in here. Not saying I'm the only one to ask for those things, just saying that I noticed, and it's amazing. Thank you.
Grady, as someone who more or less had to drop out of university and get to putting what mechanical engineering skills I have to practice every day, I cannot even express how much your videos have helped me grasp these (often not very intuivite, to me at least) concepts, to where I can apply them in succesfully designing (hydraulic) systems. Many thanks, and all the best to you and your family.
Nice stuff. I've used "Crane Technical Paper No. 410" for years. People often misunderstand just how much a couple of valves and elbows (minor losses) can affect a plumbing project. Or using the next size up piping.
I am currently taking fluid dynamics. I am apauled at how much better I understand even just head loss after 10 minutes if watching this video, than my instructor can explain in an hour. I wish educators did visual presentations when explaining concepts. Thank you!
I love to use this analogy in reverse, to explain electricity I start with "imagine a pipe system". The tension is how high the water column is, the current is how much water is passing the tube and the resistance depends on the tube... makes way easier to understand electricity, because is way easier to imagine water flowing in tubes.
I studied Civil Engineering but rarely did a professor make theory as interesting and engaging as you do. It is much appreciated and I truly enjoy watching your videos. Keep them coming.
Instead of "using the formulas to check what kind of improvements can be expected" I found it much more entertaining to watch you "go out to the garage" and test it. Love these contraptions you're always building !
This is weird but why does he have such a soothing voice?! I come here mainly for relaxing. The civil engineering knowledge is just the frosting on the cake for me. A delight to watch to these videos; Please keep producing them;
@@alveolate And for those who don't know (like me), ASMR = "autonomous sensory meridian response, a relaxing, often sedative sensation that begins on the scalp and moves down the body" according to thinkwithgoogle.com.
A couple years ago the existing sump pump in our crawlspace got overwhelmed with flow. I studied the pipe arrangement and then did some research. The pump had a 1.5" output, and previous owners had hooked it to a 1.5" pipe, up about six feet of head before going horizontal, two unnecessary 90-degree bends and ten extra feet of pipe before exiting a wall, and then to a rollable 1.5" vinyl hose. So I got a second pump, used 2" pipe, piped it directly out the wall asap without the extra bends, then 3" pipe outside and then to even larger daisy-chained vented drain pipes. Dramatically improved the flow, we still needed both pumps but it caught up so one would cycle on/off. Also used a quiet check-valve to avoid backflow (and thumping). I'm pretty good with my hands but don't have a lot of experience with home improvement, so I'm pretty proud of this project, even as simple as it was. :)
I grew up in Alaska when the Alyeska Pipeline was being laid. I was always interested in how the oil flowed and why pumping stations were necessary. This goes a long way to explaining that stuff. Thanks Grady!
When you had the large diameter pipe in there, you still had small diameter pipes on either side of it. Those small diameter pipes would dictate the pressure differential with a minor tick from the transitions.
it might have made a difference on a longer pipe, yes. However, you would have seen at least some drop in differential pressure, were it not for the minor losses stacking up in the setup he created, and I think that was his point.
My toughts exactly. He definitely could have accomodated a longer piece of the thick pipe in the apparatus, and shortened the tiny tubes. Especially when you look at the location of the pressure gauge lines even further back in the tubing, you see most of the experimentation zone is actually just small tubes and fittings.
As someone interested in the mechanical side of hydraulics, normally your videos are only tangentially related but this one is directly used in what i need to know, will definitely be coming back to this one to study.
You are better than my university professor. It was so difficult back when i was in school and fluid dynamics was a nightmare. We didnt have internet like now and all i had was a book which barely explains anything. UA-cam is truly amazing tool for learning. Please keep on making more videos.
This channel has taught me so much about infrastructure and fluid dynamics that I never knew I needed to know, but am glad I did! Not even remotely in an engineering field, but I always love these videos.
I am a retired CE and a long time ago I remember an analog computer in college that was created to calculate flow in pipe networks which was quite a chore back in the slide rule days. By changing wires and resisters it was possible to determine the best layout. I would really like for you to do a video on pipe networks. I really enjoy your videos.
Thank you for making another great video. As a petroleum pipeline operator, your description of "intuitive understanding" really hits home. Its the level upon which our interactions with carefully engineered high and low pressure pipelines happen. I'll be having a lot of fun at work applying what I have learned from this video and looking for predictable outcomes. Keep up the good work!
Great explanation! We put in a pool and after much research, I requested 2” pipes with separate lines for bottom drain and skimmer as well as the return lines. Most pool builders will only use 1.5” pipes and T intake lines and return lines together which causes more resistance with less flow, your pump works harder, increasing electricity cost. Add a flow rate gauge and a variable speed pump to make it as efficient as possible.
@@MikeSmith-qj2ys Air is in fact a fluid, so fluid dynamics apply to both air and water. Liquids and gasses do have differences, but they are more similar than most people assume.
Neat idea but I don't think so. From what I understand the dimples actually increase friction but significantly reduce the drag. Not sure if there is any measurable drag in a pressurized pipe system...
Please allow the automatic translation, in the settings for the new uploads! Not only is it more useful to normal people who like to see the words appear on the screen right around the moment they're spoken, but it's also very useful for people who are partially deaf, people who want to learn the language, people who have troubles understanding your accent, or people who like watching your videos at higher speeds (i.e. x1.75, x2, or x2.5). It's one of those set-it-and-forget-it settings/options.
I'm a little confused, as I thought water pressure throughout a system remained constant. Is the pressure gradient one then that only exists during active flow, but when flow stops that gradient would disappear?
@@PracticalEngineeringChannel Ok, thanks. And thank you for continuing to present often esoteric information in an entertaining and informative fashion.
@@PracticalEngineeringChannel please give me advice for buying water pump for borewell In my farm there is no electricity available I am using solar panel of 2000watt Flow rate is not matters for me Which pump is best for lift water up to 800 feet on 2000watt solar panal Difragm pump or gear pump or screw pump
I really enjoy this channel because it shows a different perspective from what I got in school as a chemical engineer. We covered flow (transport phenomena) extensively, but it never mentioned Haven-Williams
So a small increase in pipe size can result in a significant difference in flow capacity. Going up one pipe size bigger than you really need probably doesn't change the cost much and might pay dividends in future expansion.... Are you listening process engineers?
In many cases, I'd agree, but it's not appropriate in all cases. For instance, domestic hot-water piping; a larger pipe size means a longer wait and more wasted water each time hot water is demanded. Also, the larger diameter pipe will weigh considerably more when filled with a heavy fluid (e.g. water).
Not an engineer at all, but I was happy to see the formula in use! I used it or a variation to calculate the head pressure needed for a marine aquarium circulation pump. Saved myself almost $300 instead of over guesstimating.
i spied a mistake you made @6:32 with the large pipe diameter. the delta P is being measured on the small diameter pipe, all that's happening is the large pipe is filling and the velocity will slow down, then enter the original size pipe and speed up, this is where you are measuring the pressure. if you measured at the large pipe or the pipe continued as the large pipe you would have seen less delta P. I'm a gas flow measurement tech so some of my hydraulic knowledge may be rusty. but in the real world if we want a pressure drop after a CV sometimes we jump up a pipe size to take "load" off the CV and have less worry of valve freezing off as gas velocity increases.
Yes it would be a different delta P if he measured at the larger pipe; but that would mean he changed his point of reference for comparison to all of the other tests. He wanted to compare the different components effect on the pressure drop so isolating the losses only makes sense. He isn't interested in the flow rate and pressure change due to the diameter change. Only the losses due to those.
@@jonnya3302 he would need to “change” his point of reference, changing the length of the pipe in between is changing the point of reference. In this demo the only thing he is proving is longer or shorter pipe adds or reducing resistance to the system, likewise adding elbows. If the downstream tap was on the large diameter pipe he would of easily seen the reduced differential at the higher flow rates. Other than the large diameter he proved everything quite well.
@@adampetten1009 I see what you are saying now. If he measured in the large diameter at each flow rate we would be able to see the consistently reduced differential.
@@jonnya3302 I'm not sure what point you're trying to make, but he is not making an apples to apples comparison ie: he is not making a valid comparison of the head loss across 14" of 3/8" pipe to the head loss across 14" of 2" pipe. (I'm estimating dimensions here) In reality the comparison he demonstrated is a comparison between the head loss across 14" of 3/8" pipe, and the head loss across 8" of 3/8" pipe plus 6" of 2" diameter pipe. Even a casual glance at the Hazen-Williams Equation will tell you that the head loss across 8" of 3/8" pipe plus 6" of 2" dia. pipe is going to come mostly from the 8" of 3/8 inch pipe and not from the 6" of 2" pipe.
I was a design engineer on a number of natural gas and crude oil pipelines. Some pipeline companies use a polymer based drag reducer that is injected into the product flow. It forms long strings that dampen the turbulence and Eddie currents that restrict flow.
As someone currently formulating an electronics instructional series, I really appreciate you going over Pressure and Flow in such an easy-to-understand fashion! (that may sound unrelated, but Voltage is frequently referred to as Pressure, and Flow is just another word for Current, and electricity acts like a fluid)
@@OldieBugger because engineers in America actually use the imperial system. It's not nearly as bad as you think it is, and it's pretty much necessary when all of your suppliers and tools use imperial
@@OldieBugger engineering degrees in the land of freedom are tied to this antiquated system, it's a vice perpetuated by new engineers to accommodate old engineers :/ So much headache (i assume) compared to the rest of the world, where mental crunching numbers is an easy and daily task of an engineer , to give preliminary estimates or conclusions that don't require much precision
@@kilianortmann9979 Maybe you can say so, if it makes you feel better. I measured one pipe in my bathroom that was easily accessible and my calipers showed 12mm. Which means the inside diameter is probably 8mm. What are those in the medieval units of inches, barleycorns etc?
dang, this and the pumps videos are helping me understand engines, exhaust and "power adders" far better than most direct car application videos! keep up the fantastic work!
I find all of this genuinely interesting, I'm already a different kind of engineer but I keep thinking I'd like to try other kinds thanks to videos like these.
I usually click straight through the commercial. However, today I really enjoyed getting a glimpse of you cooking with your family. Love your content, love your channel. Keep it coming!
I'm no engineer.. I do mostly painting now, some construction and basic handy stuff, so over time I've gotten a look into all the fields. Sometimes the more technical and mathematic parts of your content doesn't necessarily go over my head, but I'll basically never have to use them. I still love every single bit of your content, I find the insight fascinating and useful to create a broader understanding for myself. Just wanted to say Thank you, for one of my favorite channels on the platform. Your videos on concrete were my favorite, having poured some myself in my lifetime, and always appreciative of the importance of the substance in our modern world
This is also how flow in our arteries works. In this prospect it is pretty important to understand, to which extent a narrowing in an artery alters the flow and pressure of blood. Very interesting video!
I am a firefighter driver operator, wish I had you teach fiction loss to me. As an operator of a fire engine knowing fiction loss and understanding head lost to calculate residual pressure on a fire hydrant is very important. This was a good intro into fiction loss for a new fire fighter driver.
While this may not be that interesting for many people I learned a lot from this video. I had no idea you lose that much flow from sharp bends. This certainly explains why my hot water lost so much flow when I exchanged my boiler for a bigger one and while I was there I routed all the pipes nicely along the walls which of course meant many many right angle turns.
I'm a Fire Protection Engineer and I use Hazen Williams all the time to design sprinkler systems and underground piping for fire hydrants. For minor losses associated with fittings and valves, we use an 'equivalent length of pipe' value provided by the manufacturer. For more complex equipment like a backflow preventer, the manufacturer will provide a curve with pressure loss as a function of flow rate.
My background is in chemistry but I've essentially worked as process engineer since I finished University. As a result I'm mostly self taught in a lot of the fields that I use on a daily basis. This video gave a really nice intuitive explanation of head loss and would have saved me so much reading time. I hope to see you tackle Reynolds number and turbulence next!
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Please add this video to your "Flow in Pipes" playlist.
@@WilliamDye-willdye Done! Thanks for the reminder.
Can you make a video on cathodic protection
Great video as always!
Kudos on making the add part of the video as entertaining as the demonstration part!
Googly eyes!
Are you planning doing more electric engineering videos?
Perhaps on topics like wireless power transfer or high frequency power transmission?
@@PracticalEngineeringChannel Which engineering branch you like most rather than Civil engineering?
While I really enjoy your more theory-based videos (the recent power grid one was excellent), the practical demonstrations are so good to watch. It's like being back in school science classes, with more googly eyes (an obvious improvement!).
Keep up the great work!
"Hi, I'm Grady, and in this episode I build a state wide power grid and introduce fluctuations in the frequency to show you how that affects the stability and how, when introducing to much, it can cascade into a total grid failure."
@@hkr667 I can totally see him making a model town and a model working power station and everything just to simulate. Like that model bay in SF for a dam that was never built for reasons.
Hear, hear!
Those giant-arse, ⌀3m pipes around hydroelectric facilities and pumping stations? Those should have googly eyes, too. Oil refineries might be tolerated more if they put googly eyes on those big pipes.
Interesting how civil engineers use electricity to explain water flow, but electrical engineers use water flow to explain electricity.
Yup! I do it in my science class too. LoL
Either water or electricity are handy ways to explain software design, to answer the question “So what do you do?”.
“Well, I’m kinda like a plumber for data flow.”
It's like the definition of recursion: see the definition of recursion until you understand it
But how would an electrical engineer explain water flow?
I studied mechanical engineering, in my mechanical system class they tought us that fluid networks are like electrical wiring and in my electrical fundamentals they said think of electrical network as fluid piping, I have never denied derrida's deconstruction since🤣
As a firefighter engine operator I use friction loss calculations a lot. Nozzles are designed to have a certain pressure on them to form a proper stream, this means calculating your head loss for the given flow.
I might use this video as an introduction to pump operations, you explain friction loss well.
My dad was a firefighter and I remember (from 50 years ago) listening to him and his buddy chat about their new pumper, flow, lift, nozzles and all that good stuff. I was in high school and it was a lot to try and wrap my head around. Turns out firemen needed to know more than how to drive red trucks and spray water on stuff.
@@larryg3326 Cook chili and slide down firepoles too.
Now that you mention it, it sounds so obvious you guys need this but I never stopped to consider it. Thanks for sharing!
Angus Fire in the UK used to make available a free tool for calculating the head loss in firefighting pipe. - Looks like it's still a thing - used to be a downloadable application, now it's a web thing.
@@larryg3326 It can get complicated. Growing up I loved math, didn't realize how much math was involved in firefighting until I took a operator's course. I am now a full on pump nerd, having complicated what if conversations about pressure, friction and throughput of differ t trucks is definitely something I enjoy doing with my fellow pump nerds.
I'm a physician and i love these videos because a lot of this forces affecting fluids are also a big issue in heart and vascular diseases
There's a reason why Daniel Bernouilli, the author of "Hydrodynamica", was a physician and anatomist fascinated with blood circulation ;)
@@pseudolullus I was able to read my cardiograph after completing a course in industrial hydraulics!; cool
The cardiovascular system almost seems like a plumbing cheat sheet - biology doesn't use elbows, because it can't afford "minor losses" of inches of pressure!
How can you explain increased blood pressure through vasoconstriction with the venturi effect stating that a narrower pipe leads to less pressure on the walls of said?
Seeing Grady's life evolve through the Hello Fresh ads is probably one of the most wholesome experiences I get each month
it does not even feel like an ad. Perhaps they should start a secondary channel "Grady tries to cook, powered by Hello Fresh" or something :)
I was just thinking the same thing. Came down to the comments to see if anyone else thought as much.
11:44 how's it feel? lol It feels grate.
It says a lot about the rest of your life.
@@pflaffik What, that we like to see nice things and point them out when we do?
I really wish this channel existed in 2014 when I was studying hydraulics. It's not really difficult, but it would surely help. Also I wish there's another version of Grady that's into Geotechnics, because I really struggle with it even today!
hire him to be your personnal teacher
Don't be shy in tutoring, and asking for it to be explained in different ways.
Feynman said if you can't explain it to a 7 year old, you don't understand it yourself... something like that
People optimally learn when they are 80% effective. That is, there is no impulse to learn when you're doing what you already know.
I'll be sure to be vicariously thankful for you.
Hydraulics isnt that difficult? Well, you're surely smarter than me!
The neat thing about minor losses is that it applies to our body as well. Where blood vessels split and bend is usually where we have the highest pressure, which is why ruptured aneurysms tend to happen there (e.g. split at the descending aorta in the stomach, split at the carotid arteries in the neck, split of the circle of Willis arteries in the brain).
Changes in diameter is also where turbulence happens, which is why blood clots tend to settle in certain places (e.g. when veins dump blood into the heart, or when small veins transition to large veins).
Very cool. Pipes are pipes after all!
@@PracticalEngineeringChannel and cardiologists are just glorified plumbers.
@@masterimbecile how about "highly-qualified plumbers" instead of glorified?
Being a plumber with 40 years experience, you'd think I could sort my own heart problems....lol...
that doesnt make sense, at bends and split would it not be lower pressure because you have pressure drops?
Nice video, I appreciate your efforts to give an "intuitive understanding" about familiar stuff like fluid in pipes. My 9-year-old and I make a regular habit out of these videos, thanks.
Fire protection engineer here... We use hazen-williams to calculate pressure loss in water-based fire sprinkler systems too!
Hazen Williams predates Darcy... and isnt that accurate.. but for what you need it for the +/- 10% isnt that big of a deal.
I am a Water/Wastewater Engineering at a Consultant firm, and you nail this explanation. I might even use this for new analysts that are having a hard time with hydraulics.
I loved the smirk when talking about units. In hydraulics specifically there are some crazy differences when you change units. It's so easy to mess up calcs by just using the wrong units, even within a unit system.
Especially when dealing with unit conversions or the lack there of.
Like when you change settings expecting feets and it changes in meters...
Even space projects have been failed because of unit conversions.
@@kholdanstaalstorm6881 As an engineer in the US, I always wonder how many hours I've wasted with weird unit conversions. I wish we used metric.
@@Lady-Lilith
And I as a technical drawer in a European country wonder how much time lost when working with US produced equipment to get them to fit and connect to European installations.
Not just the dimensions of fittings and threads but the 110V 60Hz supply needed for some equipment.
Whenever you can't use a inch based fitting and has to get or worse make a conversion connector.
I too wish the US followed the metric system.
@@kholdanstaalstorm6881 I worked in Q.A. in the Auto Parts Supply sector for decades, and then, in semi-retirement, in a shop that made parts for locomotives, oil and gas and military here in Canada. The auto parts supply was easy, as almost all our exports were to the U.S., and I more or less grew up in the Imperial system. Later, in the smaller shop, everything was in metric. It was a bit of a shift for me. It's easy to convert, it's simple math. But it's hard to 'imagine' systems you weren't raised in. For example, I can 'imagine' the feel of a pound in my hand, but not a kilo-- if that makes sense. It doesn't really impact much, except maybe confidence in the matter at hand. In the end, while I think metric is easier, what's really critical is standardization. I'd use cubits if the rest of the world was using them.
Also, if you ever want to unmask an American tourist posing as a Canadian in Europe, ask them what mm socket can be used on a half inch nut. Canadians know.
Fun fact: in refineries and chemical plants a significant amount of the noise is caused by these principles. Flow rate, Reynolds number, pressure, pipe material and wall thickness work together to cause audible sound. This also helps explain why some pipes are bigger than what the calculated flow would require.
Great channel btw
"Fluid & friction isn't fascinating", meanwhile I'm fascinated and taking notes.
I too got a reaction out of that quote. The video is super interesting
I'm an independent plumber, this video was 2nd to none.
@@johnturner8142 same here. This video helped confirm so much for me.
call me lazy.. i prefer just rewatching a video to taking notes... also fluid and friction is how we all got here😉...
kinky af
I’m a mechanical engineer as well, and understand all of these concepts, but I wish I had a professor like you in college, it would have made my life so much easier! Thanks for this!
It’s a gift, being able to teach to a variety of learning styles.
First you must start with a free body diagram 😊
Wow, I actually happen to have this in my hydraulics course in university right now. I'ts the first year and I've had trouble understanding some of what the professors tell us, but this helps a lot. Thanks!
They're presenting idealized equations describing abstractions of real phenomenon in the context of legal matters. Don't sign anything!
I think it's hard for professors to think and explain practically, because they are in an isolated environment away from real world applications. I did EE, and never learned to solder until my first job.
I'm a plumber in Canada and the units you are using in your video are actually very alive in the field. I use Inches of water column on my manometer to calibrate furnaces' gas pressure.
I remember a Feynman lecture where he talks about the problems of predicting "honest to god wet-water flowin' through a pipe".
Woah Feynman took a side on "is water wet?"?
I am not an engineer so your simple explanations help me to understand the world around me.
Grady, I am a huge fan. I want you to know that I have been watching your videos for 5 if not 6 years.
I'm currently finishing my ME undergrad. You have inspired a generation of engineers, and your simple but awesome passion for what you do will continue to grow through my generation.
I'd just like you to know that you have played a part in my life, and I'm sure many young engineers life.
I hope you take pride in knowing your inspiration-- in some way or another-- will lead to revolutionary breakthroughs in our world.
Even If you didn't personally engineer new Carbon Capture technology, Interstellar space ships, or next-gen Nuclear reactors I WILL and WE WILL, and you will have played a role in that
Thank you for doing what you do.
I teach university-level fluid mechanics & hydraulics courses, and I just have to say that I come back to your videos all the time. You do a truly fantastic job at demonstrating theory and relating it to practical applications, and I draw so many teaching ideas from your content. THANK YOU!!
Love this guy. The way he speaks, the calm voice makes me want to continue learning. Wish my teachers did the same. Maybe I'd listen more.
lol, way to blame others for your own shortcomings. xD
Perhaps it also goes the other way. The teachers wish their students where calm and attentive like his viewers are ;-)
@@douglasharley2440 I am passing all my classes. But I'm not learning anything. I'm just there to memorize something to later remember it and never use it again.
@@heavygaming6596 Yeah, best to change your outlook. Take advantage of these classes, you will most definitely need some of that knowledge in your life.
@@CharalamposKoundourakis I do take advantage of what I need. I study economics and law. I chose this course for that purpose but for some reason we have p.e for example. Now during online class we are practically doing yoga in our living rooms in a zoom call. I don't need this. On the other hand I do study programming and a bit of engineering on my spare time and this is where channels like this one become so useful. I'm learning something I want to learn and will actually use. Unlike math equations I need to remember.
PE channel makes me wish i studied engineering in college. then i remember that everyone on the engineering track went five consecutive years without sleep because the workload was absolutely absurd.
They don't give out that diploma for nothing. Engineering is a responsibility, not just a profession.
@@derschwartzadder sure, but we also have a responsibility to treat these students like humans. they deserve to learn in an environment and at a pace that isn't going to destroy them mentally, physically, and financially. and the rest of us deserve to have educated engineers who didn't spend their entire college life as sleep-deprived zombies. exhausted students cannot learn.
engineering students need more time to study without destroying themselves in the process, and the financial support to reduce the pressure of graduating as soon as possible and get rid of the looming threat of lifelong student debt if they wash out.
same goes for medical students and other similarly demanding post-secondary fields where public health and safety is in their hands.
You're right, it absolutely is absurd. However, the degree is well deserved and, if anything, makes the transition into the workforce very easy as life feels like it's on easy mode in comparison 😂
I work with hydronic heating contractors and it’s amazing to me how very few of them seem to understand pipe size and flow. I see it almost daily that they drastically undersize their heating pipes and then in winter don’t have enough heat at that zone, despite having a large enough boiler and radiator.
You would probably also be amazed at how many think that reaming pipes at joints is unnecessary, and don't do it, if you knew.
I imagine every minute of published video probably takes you 10 hours to produce, so thank you. You're a resource to many!
This one is a 10 out of 10. It's perfect as an introduction or refresher!
Can confirm the introduction part
It deserve more. 21/20 since it covers everything and more
And no doubt nightmare fuel for some!
Wow, it took me 4 years to complete btech and learn nothing. If we get to study like this, learn the entire course in 1 year with 20 times more knowledge.
Never knew pipe pressure works in such a manner. Keep up the good work.
As a plumber, i'm stoked to learn about this from you. Thanks, Grady!
I love how concise your videos are. I’m a sophomore engineering student at Purdue and see a boiled down explanation really helps me wrap my mind around a concept.
This video couldnt be timed more perfectly for me. I am in the middle of renovating my home by myself. This includes redoing plumbing, and I only had the suspicions that more turns equals more pressure loss. But thanks to this clear explaination I know that I have to take the shortest route (in terms of turns) to my shower for minimum flow loss.
Mr Grady, I remember you asked in either a video or in your comments about what we would like to see more of. I responded with something along the lines of "more fluid stuff, maybe show how you make your demonstration contraptions in your garage, show some more equations, and maybe some key books you use".
You responded with this video. You have everything that I mentioned in here. Not saying I'm the only one to ask for those things, just saying that I noticed, and it's amazing. Thank you.
"substitute your preffered units" ah yes, water volts, water amps, and water ohms.
I'm using Planc units. I mean, why not? /shrug
He didn't say to convert the unit type, he said you could change the unit size.
Yasssssss hahaha!
Me too lol 😂
I hear ya. I've found that the water analogy of electricity is much, much more useful to me when used in reverse
Grady, as someone who more or less had to drop out of university and get to putting what mechanical engineering skills I have to practice every day, I cannot even express how much your videos have helped me grasp these (often not very intuivite, to me at least) concepts, to where I can apply them in succesfully designing (hydraulic) systems. Many thanks, and all the best to you and your family.
Nice stuff. I've used "Crane Technical Paper No. 410" for years. People often misunderstand just how much a couple of valves and elbows (minor losses) can affect a plumbing project. Or using the next size up piping.
As a concrete pump operator and a fireman, thank you! All of your fluid hydraulic videos are awesome!
Grady Hillhouse is my UA-cam Professor in Civil Engineering. Heads up for this great teacher.
Me too
I am currently taking fluid dynamics. I am apauled at how much better I understand even just head loss after 10 minutes if watching this video, than my instructor can explain in an hour. I wish educators did visual presentations when explaining concepts. Thank you!
I love to use this analogy in reverse, to explain electricity I start with "imagine a pipe system". The tension is how high the water column is, the current is how much water is passing the tube and the resistance depends on the tube... makes way easier to understand electricity, because is way easier to imagine water flowing in tubes.
I was thinking exactly, exactly that.
I studied Civil Engineering but rarely did a professor make theory as interesting and engaging as you do. It is much appreciated and I truly enjoy watching your videos. Keep them coming.
Brought me right back to my Fluids class
Instead of "using the formulas to check what kind of improvements can be expected" I found it much more entertaining to watch you "go out to the garage" and test it. Love these contraptions you're always building !
I was waiting for 8:45 the whole video. Thank you, you never miss answering any question i have. :)
You've helped me through university, now you're helping me in the workplace. I'm forever grateful for you, sir. 🙏🏾
I remember learning the Hazen-Williams equation for school. There is also the Bernoulli equation.
Hydraulics lab was one of my favorite classes in engineering school. Learned so much from it in a very practical way.
This is weird but why does he have such a soothing voice?! I come here mainly for relaxing. The civil engineering knowledge is just the frosting on the cake for me.
A delight to watch to these videos; Please keep producing them;
oh dear... guess we better start welcoming the grady ASMR fans
@@alveolate And for those who don't know (like me), ASMR = "autonomous sensory meridian response, a relaxing, often sedative sensation that begins on the scalp and moves down the body" according to thinkwithgoogle.com.
A couple years ago the existing sump pump in our crawlspace got overwhelmed with flow. I studied the pipe arrangement and then did some research. The pump had a 1.5" output, and previous owners had hooked it to a 1.5" pipe, up about six feet of head before going horizontal, two unnecessary 90-degree bends and ten extra feet of pipe before exiting a wall, and then to a rollable 1.5" vinyl hose. So I got a second pump, used 2" pipe, piped it directly out the wall asap without the extra bends, then 3" pipe outside and then to even larger daisy-chained vented drain pipes. Dramatically improved the flow, we still needed both pumps but it caught up so one would cycle on/off. Also used a quiet check-valve to avoid backflow (and thumping).
I'm pretty good with my hands but don't have a lot of experience with home improvement, so I'm pretty proud of this project, even as simple as it was. :)
Excellent as always. I often share your videos with my colleagues. Thank you for all the time you put into these.
I grew up in Alaska when the Alyeska Pipeline was being laid. I was always interested in how the oil flowed and why pumping stations were necessary. This goes a long way to explaining that stuff. Thanks Grady!
When you had the large diameter pipe in there, you still had small diameter pipes on either side of it. Those small diameter pipes would dictate the pressure differential with a minor tick from the transitions.
it might have made a difference on a longer pipe, yes. However, you would have seen at least some drop in differential pressure, were it not for the minor losses stacking up in the setup he created, and I think that was his point.
Exactly what I was thinking. Once you go through that small diameter pipe thats all your going to get from that system of pipe
@@simongibbs9392 if it were 20' long, you'd notice a significantly smaller pressure drop.
My toughts exactly. He definitely could have accomodated a longer piece of the thick pipe in the apparatus, and shortened the tiny tubes. Especially when you look at the location of the pressure gauge lines even further back in the tubing, you see most of the experimentation zone is actually just small tubes and fittings.
As someone interested in the mechanical side of hydraulics, normally your videos are only tangentially related but this one is directly used in what i need to know, will definitely be coming back to this one to study.
Love the demonstrations. They make it much easier to understand difficult to understand concepts. Keep up the good work.
You are better than my university professor.
It was so difficult back when i was in school and fluid dynamics was a nightmare. We didnt have internet like now and all i had was a book which barely explains anything. UA-cam is truly amazing tool for learning.
Please keep on making more videos.
Daw! The wittle baby holding on to daddy during cooking time! So cute.
As for the actual engineering stuff, very informative.
I'm not even an engineer and this is my favorite UA-cam channel. Thank you so much for the amazing content you produce, Grady!
I'm in a Fluid Mechanics class and I really love this video. Thanks man
cant explain why but I want grady to officiate my wedding
Lol, now that you mention it, he IS very pastor-ish. Put a collar on him and he'd be indistinguishable from any real pastor or priest. 😆😊
He's a good speaker, so you're not the only one thinking that.
Probably his clarity and diction, sounds like someone who can captivate an audience.
My wife likes to be in the room when i'm watching his videos. She doesn't watch them or care about engineering, like at all, but she loves his voice.
@@kholdanstaalstorm6881 He has the demeanor of a man who enjoys the world around him, and understands why he's here; which is very priest-like.
@@TheBetterGame My girlfriend like to be in the room when I'm watching AvE videos. I'm not sure what that say about her.
This channel has taught me so much about infrastructure and fluid dynamics that I never knew I needed to know, but am glad I did! Not even remotely in an engineering field, but I always love these videos.
I just like it when Grady says words that start with "P". Pipes, permeable pavement, …
I know how you mean 😁
I am a retired CE and a long time ago I remember an analog computer in college that was created to calculate flow in pipe networks which was quite a chore back in the slide rule days. By changing wires and resisters it was possible to determine the best layout. I would really like for you to do a video on pipe networks. I really enjoy your videos.
‘I just turn the valve as far as it will go’
...*_cries in small water heater_*
Laughs in smaller on-demand water heater
Great thread.
THIS is the videos I expect to see on UA-cam.
If it doesn’t improve your life or leave you any smarter, there’s kinda no point.
Grady doing a video on fluid dynamics. Excellent.
Thank you for making another great video.
As a petroleum pipeline operator, your description of "intuitive understanding" really hits home. Its the level upon which our interactions with carefully engineered high and low pressure pipelines happen.
I'll be having a lot of fun at work applying what I have learned from this video and looking for predictable outcomes. Keep up the good work!
When he says "Phenomenon", all I hear is "Mahna Mahna" and I start singin in my head....
AH! Now it's in my head too.
Do Dooooooo Do Do Do!
Thank you! I'm on the board for my city's utilities, which includes water and sewage. This is very helpful.
My takeaway from this video, you need to water your plants regularly :P especially you grady.
RIP those freeze-scarred palms and cacti.
This is really weird. I swear I made this as a top-level comment, not a reply.
They died because of the cold snap in Texas, because he lives there.
Great explanation! We put in a pool and after much research, I requested 2” pipes with separate lines for bottom drain and skimmer as well as the return lines. Most pool builders will only use 1.5” pipes and T intake lines and return lines together which causes more resistance with less flow, your pump works harder, increasing electricity cost. Add a flow rate gauge and a variable speed pump to make it as efficient as possible.
Off the wall idea: disregarding cost, could adding dimples like a golf ball on the inside wall of a pipe reduce friction and increase flow?
It might be a good concept. But, we're pumping fluid, not air.
@@MikeSmith-qj2ys Air is in fact a fluid, so fluid dynamics apply to both air and water. Liquids and gasses do have differences, but they are more similar than most people assume.
Neat idea but I don't think so. From what I understand the dimples actually increase friction but significantly reduce the drag. Not sure if there is any measurable drag in a pressurized pipe system...
Internal HDPE liners do a better job than dimpling but its not cost effective for most pressurized systems.
the dimples would typically increase the piping's roughness factor increasing friction losses.
Please allow the automatic translation, in the settings for the new uploads! Not only is it more useful to normal people who like to see the words appear on the screen right around the moment they're spoken, but it's also very useful for people who are partially deaf, people who want to learn the language, people who have troubles understanding your accent, or people who like watching your videos at higher speeds (i.e. x1.75, x2, or x2.5). It's one of those set-it-and-forget-it settings/options.
Me: built Excel Sheets to calculate pressures, flow, and head of pipe networks for Fluids class
Also Me: watches this video
@@Kandralla Looking at someone else’s excel spreadsheet is like looking at the scene of a grisly murder
I'm going to add this video to a power point I created to teach "Pump Operations" for the Fire Department I work for. Great Stuff.
I'm a little confused, as I thought water pressure throughout a system remained constant. Is the pressure gradient one then that only exists during active flow, but when flow stops that gradient would disappear?
Yes exactly. The difference between hydrodynamic and hydrostatic conditions.
@@PracticalEngineeringChannel Ok, thanks. And thank you for continuing to present often esoteric information in an entertaining and informative fashion.
@@PracticalEngineeringChannel please give me advice for buying water pump for borewell
In my farm there is no electricity available
I am using solar panel of 2000watt
Flow rate is not matters for me
Which pump is best for lift water up to 800 feet on 2000watt solar panal
Difragm pump or gear pump or screw pump
I really enjoy this channel because it shows a different perspective from what I got in school as a chemical engineer. We covered flow (transport phenomena) extensively, but it never mentioned Haven-Williams
So a small increase in pipe size can result in a significant difference in flow capacity. Going up one pipe size bigger than you really need probably doesn't change the cost much and might pay dividends in future expansion.... Are you listening process engineers?
Copy. Loud and clear, over
In many cases, I'd agree, but it's not appropriate in all cases. For instance, domestic hot-water piping; a larger pipe size means a longer wait and more wasted water each time hot water is demanded. Also, the larger diameter pipe will weigh considerably more when filled with a heavy fluid (e.g. water).
@@willusher3297 for domestic you can always use a recirculator.
Not an engineer at all, but I was happy to see the formula in use! I used it or a variation to calculate the head pressure needed for a marine aquarium circulation pump. Saved myself almost $300 instead of over guesstimating.
i spied a mistake you made @6:32 with the large pipe diameter. the delta P is being measured on the small diameter pipe, all that's happening is the large pipe is filling and the velocity will slow down, then enter the original size pipe and speed up, this is where you are measuring the pressure. if you measured at the large pipe or the pipe continued as the large pipe you would have seen less delta P. I'm a gas flow measurement tech so some of my hydraulic knowledge may be rusty. but in the real world if we want a pressure drop after a CV sometimes we jump up a pipe size to take "load" off the CV and have less worry of valve freezing off as gas velocity increases.
Yeah, it's kind of surprising that Grady made an error that gross. I'm wondering how he missed something that obvious.
Yes it would be a different delta P if he measured at the larger pipe; but that would mean he changed his point of reference for comparison to all of the other tests. He wanted to compare the different components effect on the pressure drop so isolating the losses only makes sense. He isn't interested in the flow rate and pressure change due to the diameter change. Only the losses due to those.
@@jonnya3302 he would need to “change” his point of reference, changing the length of the pipe in between is changing the point of reference. In this demo the only thing he is proving is longer or shorter pipe adds or reducing resistance to the system, likewise adding elbows. If the downstream tap was on the large diameter pipe he would of easily seen the reduced differential at the higher flow rates. Other than the large diameter he proved everything quite well.
@@adampetten1009 I see what you are saying now. If he measured in the large diameter at each flow rate we would be able to see the consistently reduced differential.
@@jonnya3302 I'm not sure what point you're trying to make, but he is not making an apples to apples comparison ie: he is not making a valid comparison of the head loss across 14" of 3/8" pipe to the head loss across 14" of 2" pipe. (I'm estimating dimensions here) In reality the comparison he demonstrated is a comparison between the head loss across 14" of 3/8" pipe, and the head loss across 8" of 3/8" pipe plus 6" of 2" diameter pipe. Even a casual glance at the Hazen-Williams Equation will tell you that the head loss across 8" of 3/8" pipe plus 6" of 2" dia. pipe is going to come mostly from the 8" of 3/8 inch pipe and not from the 6" of 2" pipe.
I just did a project on this in my fluid mechanics class. This is really cool to see again.
1:10 physics analogies have joined the chat : superconductors and superfluids :D
I was a design engineer on a number of natural gas and crude oil pipelines. Some pipeline companies use a polymer based drag reducer that is injected into the product flow. It forms long strings that dampen the turbulence and Eddie currents that restrict flow.
You can tell the real professional engineer in the subtle details, like the googly eyes added for increased measurement accuracy.
As someone currently formulating an electronics instructional series, I really appreciate you going over Pressure and Flow in such an easy-to-understand fashion! (that may sound unrelated, but Voltage is frequently referred to as Pressure, and Flow is just another word for Current, and electricity acts like a fluid)
Me, using the metric system, having no clue how his scales compare to mine ( 2:47 )
Yea, if this is supposed to be about engineering why does he use antiquated measures?
@@OldieBugger because engineers in America actually use the imperial system. It's not nearly as bad as you think it is, and it's pretty much necessary when all of your suppliers and tools use imperial
@@OldieBugger engineering degrees in the land of freedom are tied to this antiquated system, it's a vice perpetuated by new engineers to accommodate old engineers :/
So much headache (i assume) compared to the rest of the world, where mental crunching numbers is an easy and daily task of an engineer , to give preliminary estimates or conclusions that don't require much precision
Because, even in Europe, domestic pipe sizes are still inch based (or roughly inch based, BSPT is kinda weird)
@@kilianortmann9979 Maybe you can say so, if it makes you feel better. I measured one pipe in my bathroom that was easily accessible and my calipers showed 12mm. Which means the inside diameter is probably 8mm. What are those in the medieval units of inches, barleycorns etc?
I'll definitely share this to my neighbors. They are getting new pipelines installed in their house. This would be supper useful to them!!
Milliliters for science, ounces for drinking
no
Nah, it’s millimeters for bullet size and inches for 🍆 size!
@@switchblade6226 says the person having a 354 ml drink while pouring 1.85977 ounces of chemicals in a test tube
Pints for drinking
No
dang, this and the pumps videos are helping me understand engines, exhaust and "power adders" far better than most direct car application videos!
keep up the fantastic work!
I find all of this genuinely interesting, I'm already a different kind of engineer but I keep thinking I'd like to try other kinds thanks to videos like these.
Sure wished I had this video when I took pipeflow class in engineering school... Excellent video!
I usually click straight through the commercial. However, today I really enjoyed getting a glimpse of you cooking with your family. Love your content, love your channel. Keep it coming!
You’re the only Chanel a actually watch the ad reads for willingly!
I'm no engineer.. I do mostly painting now, some construction and basic handy stuff, so over time I've gotten a look into all the fields. Sometimes the more technical and mathematic parts of your content doesn't necessarily go over my head, but I'll basically never have to use them. I still love every single bit of your content, I find the insight fascinating and useful to create a broader understanding for myself. Just wanted to say Thank you, for one of my favorite channels on the platform. Your videos on concrete were my favorite, having poured some myself in my lifetime, and always appreciative of the importance of the substance in our modern world
I love that you still put googly eyes on your demo units
This is also how flow in our arteries works. In this prospect it is pretty important to understand, to which extent a narrowing in an artery alters the flow and pressure of blood.
Very interesting video!
*important for medical professionals, that is
Greetings from México I´m electromechanical engineer. Thanks for sharing your knowledge, your videos are very helpful and educational.
This dude is good. One of the best channels on YT
I am a firefighter driver operator, wish I had you teach fiction loss to me. As an operator of a fire engine knowing fiction loss and understanding head lost to calculate residual pressure on a fire hydrant is very important.
This was a good intro into fiction loss for a new fire fighter driver.
While this may not be that interesting for many people I learned a lot from this video. I had no idea you lose that much flow from sharp bends. This certainly explains why my hot water lost so much flow when I exchanged my boiler for a bigger one and while I was there I routed all the pipes nicely along the walls which of course meant many many right angle turns.
I'm a Fire Protection Engineer and I use Hazen Williams all the time to design sprinkler systems and underground piping for fire hydrants.
For minor losses associated with fittings and valves, we use an 'equivalent length of pipe' value provided by the manufacturer. For more complex equipment like a backflow preventer, the manufacturer will provide a curve with pressure loss as a function of flow rate.
My background is in chemistry but I've essentially worked as process engineer since I finished University. As a result I'm mostly self taught in a lot of the fields that I use on a daily basis. This video gave a really nice intuitive explanation of head loss and would have saved me so much reading time. I hope to see you tackle Reynolds number and turbulence next!
This channel is one of the best technical channel, explaining concepts very clearly! 👍🏽👍🏽🙏🏼