The Steam Turbine: The Surprising Relationship of Engineering & Science
Ғылым және технология
Charles Parsons designed a superior steam engine called a turbine, but was ignored until he crashed a celebration of Queen Victoria's Diamond Jubilee. His turbine still generates most electricity.
Other videos in this series
Episode 1: Building a Cathedral without Science or Mathematics: The Engineering Method Explained • Building a Cathedral w...
Episode 2: Controlling Turbulence and Evolution: How Engineers Overcome Uncertainty forthcoming • Controlling Turbulence...
Episode 4: The Microwave Oven Magnetron: What an Engineer Means by “Best” • The Microwave Oven Mag...
Video Summary
00:00 Titles
00:08 Intro
To understand the relationship between engineering and science, Bill notes he will share in this video the story of how an engineer created a revolutionary engine by taming the extraordinary power of steam.
00:24 Power of Steam
Bill explains that steam can power engines because it expands: one cup of liquid water will expand into 1,600 cups of steam.
00:46 Reciprocating Steam Engines
Bill explains that this dramatic change of volume exerts a force that engineers tapped into in the early eighteenth century to drive reciprocating steam engines. He explains the operation of such an engine, focusing on the piston/cylinder where steam expands and the levers that translate the back and forth motion (reciprocating) of the piston to rotating motion.
2:07 Engine Wastes Steam
Bill notes that while the reciprocating steam engine revolutionized the world, it wasted much of the steam’s energy. Once the steam has expanded to about sixteen times its original volume it lacks the “oomph,” the force, to overcome the friction of the heavy piston within the walls of the cylinder. And friction in the arms that convert reciprocating motion into circular motion chew up some of the steam’s energy.
2:30 Charles Parsons’s Novel Steam Engine
But, in the late nineteenth century a novel steam engine appeared that used the energy from an expansion of an astonishing four hundred and seventy nine times a cup of water’s volume. That novel engine was perfected by Charles Parsons. While a huge leap forward, no one would buy his engine.
2:47 The Turbina & Queen Victoria
In frustration Parsons built a ship called the Turbinia to convince everyone of the superiority of his engine. To attract attention he crashed a naval display honoring Queen Victoria’s Diamond Jubilee in 1897.
3:33 Advantages of Parsons’s Engine
Parsons’s engine eliminated the need for the piston and cylinder and levers of the reciprocating engine.
3:45 Aeolipile
Parsons fused two two ways of using steam to rotate a shaft. The first is the aeolipile, designed by Hero of Alexandria in about 130 BC.
4:47 Branca’s Steam Device
In 1629 an Italian engineer, Giovanni Branca, designed a giant boiler shaped like a human head. From its mouth a jet of expanding steam struck a paddle wheel - much like a water wheel - which turned gearing.
5:45 Parsons’s Turbine
Bill explains how Parsons succeeded by cleverly combining the action of the aeolipile and Branca’s device by placing thirty wheels along a shaft - half rotated with the shaft, half were affixed to the casing.
8:00 Infinite Complexity
This design is simple in concept, but Parsons described the execution as of “almost infinite complexity” because of an astronomical number of dimensions and configurations of wheels and blades and every other design variable in his turbine.
09:19 Why Parsons Succeeded
What separated Parsons from the thousands of inventors before him was, he said, the “data of the physicists.” Parsons drew on the data of a forgotten French scientist, Henri Victor Regnault, who spent nearly thirty years documenting the properties of steam. From the data tabulated by Regnault, Parsons could determine that in principle a functioning turbine could be built.
10:15 Science as Rules of Thumb
For Parsons, scientific knowledge helped rule out what wouldn’t work, narrow the possibilities of what does, and shorten the path to a solution: scientific knowledge was being used as a rule of thumb. Thus the relationship between science and engineering is that science supplies gold-plated rules of thumb.
10:49 Electricity Generation
Although the turbine was a nineteenth century invention, Parsons’s turbine still enables the daily lives of nearly every human on the globe as its descendants generate the world’s electricity.
11:03 Next Video
In the next video Bill explores a single word from this definition of the engineering method: What exactly does an engineer mean by “best.”
11:15 End Credits
Пікірлер: 883
What I like about these videos is that they embody the “clear and vivid” form of science communication described by Alan Alda. Few added frills, just let the thing be cool by its own merit and clearly explain the thing you’re passionate about.
@engineerguyvideo
11 ай бұрын
That's exactly what I am aiming for ... and I have a lot of respect for the Alan Alda Science Communication Center and their approach.
@micahphilson
11 ай бұрын
@@engineerguyvideo You're very good at it too! Your videos are easily half to one tenth the length of some other science and engineering channels, yet you explain more things and far more clearly than many of them, and still include a great deal of the "wow" factor about your subjects.
@pyropulseIXXI
11 ай бұрын
This is the best. I hate when people pad with frills, as if the subject matter itself is boring and needs enhancement. If that is the case, then you are a fool that is merely entertained by frills and actually don't care about the subject matter. This also has the habit of injecting people with no real interest in the subject and diluting it, all in the name of 'inclusion.' It is such a stupid concept of tolerance; we shouldn't tolerant morons who drive the quality down just because they want to be entertained I got into physics and math because the subject itself interested me from a young age; I needed no frills. I have some peers, that perform quite poorly, that say "This was all boring to me until [insert populizer here] made it interesting. It is beyond pathetic; how can the subject itself be boring to these people, yet they still want to go into it? Makes no sense. These people can be made to like anything just by adding frills. And their performance quality is oft times extremely low
@aldomaresca9994
11 ай бұрын
@@pyropulseIXXI dude, you are being too harsh. Understand that you may have the privilege to see things that go over other peoples heads. Consider yourself lucky, why do you put people down like that?
@pyropulseIXXI
11 ай бұрын
@@aldomaresca9994 I am not putting anyone down; I tutor math and physics and will help anyone that asks for help. I encourage them to learn, and to learn on their own so they aren't beholden to external factors such as "my professor sucks; that is why I failed!" No; you failed because you didn't put the effort in to properly learn. Education is one of the only fields where people can straight up fail and then blame it on everyone else but themselves. People that need a 'good teacher' so they can learn and 'see the magic' are delusional. The quality of a teacher means nothing to me, since I learn on my own, and learning on your own is always superior by orders of magnitude. By getting people to learn on their own, I am helping them out immensely. I've had peers tell me numerous times that I teach better tahna the teacher. I teach/tutor by getting the student to re-frame how their mind works, vs just putting a path for them to follow. Once they re-frame their mind, they make their own path and can learn at an incredibly increased rate, and learn at a much higher accuracy I am merely speaking factual here; there is a real difference between people that are actually interested in a subject vs those that are only superficially interested in a subject. If someone is not interested in a subject until 'frills' are added, then they aren't interested in the subject at all. They are a mindless drone Me identifying them as a 'mindless drone' is not putting them down; it is merely a factual statement. Unlike you, I do not harbor any negative emotional reactions to 'mindless drones.' If that is how a person is, that is how they are; I do not dislike them for it; I will still hang out with them and enjoy the time; I will still help them
The chosen one has returned.
@Whiteyy191
11 ай бұрын
Cringe
@joshuadougherty8077
11 ай бұрын
@@Whiteyy191 talking from experience?
@adamjosephbliss
11 ай бұрын
Welcome back
@Jim-ie6uf
11 ай бұрын
Man, it’s been years!
@zilog1
11 ай бұрын
@@Whiteyy191Cringe²
Your video about the design of aluminum cans is what inspired in me the love for engineering that eventually turned into a career - thank you! This new series of videos perfectly captures so many ideas that I've never seen described directly, and it's filled with interesting examples. I'm so glad that you're still making these videos.
These videos should be shown to all students, and the book read by all 1st semester engineering students, I certainly would have known more of what I was getting myself into. I hope you continue this channel after the promotional videos for your book, your work is concise, well researched understandable by laymen and trained alike, a true feat of engineering.
@engineerguyvideo
11 ай бұрын
I do plan to continue. This week I am cleaning up the studio from the "debris" from this series -- all those things in the videos -- and backing up the video. Backingup up takes (astonishingly to me) about a week: it all goes onto LTO5 tape and its 4K video .. and then back into the studio to create some more videos.
Every once in a while, the universe smiles on us and the Engineering Guy delivers a new video. 😊 Well done, we missed you!
4:55: It seems to me that the plastic model turbine is shown back to front. The curved blades should increase in angle as the steam passes through the disc, and so on for the following discs. Think of each blade as an aerofoil. Apart from that, thank you, from one Bill to another, for your video.
@engineerguyvideo
11 ай бұрын
I hate this kind of errors … sorry for this …
@joebottini1743
11 ай бұрын
Ok, I wasn't the only one to notice. At 5:55, the flow rate would induce a rotation in the direction opposite than that shown. The diagram at 7:00 is correct. As someone who has used the NIST steam tables extensively, I had no knowledge of the history of their role in the success of the first steam turbine. Thank you for this video and the many others like it. I-L-L
@engineerguyvideo
11 ай бұрын
Indeed I flipped the turbine
@olejrgenbrnner4708
11 ай бұрын
@@joebottini1743 Are you sure the 7:00 is correct? In a similar comment someone posted this diagram: 2.bp.blogspot.com/-5C9XoY0Wz4w/XAJEG72iqLI/AAAAAAAABgY/35JzUdIzUTYnjWzzXvC2A2qITmfdmrn_ACLcBGAs/s1600/reaction%2Bturbine%2Bpressure%2Bvelocity%2Bdiagram.png which makes much more intuitive sense to me.
@Tomyb15
11 ай бұрын
I was wondering why the blades seemed to curve in the other direction
I was wondering how Parsons determined how to size the rotors. When you revealed the diligent work of Regnault my jaw dropped! What an amazing resource for an engineer. Thank you for this informative series and book.
This video is a gift to society! I’m so excited watching this !!!
@DmytroSichkarOnline
3 ай бұрын
Amazing video! It's sad that Tesla turbine is not mentioned here!
Steam turbines are my bread and butter. The coolest thing is that they are so well-balanced, you can spin a 330,000# LP rotor by hand, once you put oil to it in the bearing. They're great.
@mikefochtman7164
11 ай бұрын
At a GE 'large apparatus' shop near Boston, I got to see a commercial plant rotor suspended up on roller bearings while they balanced it. They only spin it a few RPM, but watching those six foot blades whiz by, even at that slow speed, was a bit scary.
@Ozzy-R
11 ай бұрын
I’ve been working in thermal power plants for over 30 years. The well balance statement is even more fascinating by the fact that these turbines, as big as they are, vibrate so little. Most bearings will vibrate about .5 to 2 mils. Considering a mil is 1 thousands of an inch, or .0254 mm.
@manxman8008
11 ай бұрын
hmm many turbs use air bearings
@ciarandevaney385
10 ай бұрын
@@manxman8008he does have a point.
@singleproppilot
9 ай бұрын
I work on gas turbine powerplants used in airplanes. They’re exactly the same in principle in action, just using a different fluid.
In 1971 at age 16 I went to Marine Engineer College in South Shields, England to learn how ships worked. We learned about reciprocating engine, took many examples apart (taken from scrapped ships) and learned how to put them back together and set up the slide valves. That was fun - but it was only when we started on turbine theory did a light bulb go on for me. I grasped the impulse-reaction principle straight away and was hooked on turbines. As a senior engineer I worked on VLCC tankers with steam turbine plants and high pressure boilers - they had excellent precision control but were very fuel hungry. At 26,000 SHP at full speed, I needed to put 240 tonnes of heavy fuel into the boilers every day. Turbines gave way to diesels - no way near as neat or as controllable , but they only burned 90 tonnes of fuel a day for about the same output power - a no brainer if you are paying the costs. I am glad that I had my time standing between the turbines as they spooled up to full sea speed. This was an experience that all engineers should have at least once. Now you only see turbines in nuclear or power plants , the steam turbine has largely vanished from the Marine world. If you ever get the chance to visit Newcastle on Tyne in UK, there is an excellent museum dedicated to Turbinia, the development of reaction turbines and the life and work of one of Britain's greatest engineers - Charlie Parsons.
@unfixedcarp8039
7 ай бұрын
Don't forget about jet turbines! I'm sure I don't need to mention that to you, but I did find it interesting how similar steam turbines and jet engines are. Especially since they also include the stationary sets of blades.
I remember when I was a wee lad in middle school when I first saw your video on the genius behind aluminum can designs. Never thought I'd imagine someday I would eventually join the giants, but here I am finally a professional engineer, 3 years in the industry. Some flames just needed a bit of spark. And that middle schooled spark was all thanks to you, engineerguy.
@douglasburnside
11 ай бұрын
I think that was the first of his videos I had come across, probably about six years ago. I immediately binge-watched all his other videos, and am busy binge-watching his four new ones now. The aluminum can video remains my favorite.
Bill's channel was the first channel i subscribed too. KZread gold.
@sincerelyyours7538
11 ай бұрын
Mine too. No other channel can compare to the quality of his erudite exposition.
Keep them coming Bill, love your work and welcome back.
As someone fascinated by philosophy of science your lucid analysis of the engineering method vs the scientific method was absolutely delightful. Thank you for your work!
This series is a true masterpiece, awesome job!
I have made a post Army career being a steam turbine generator engineer for a large generation company. I travel to many many site to do detailed inspections. I'm constantly blown away by the vast amount of refinement over the past 150 years that got us to the modern rotor design. The new stuff ia great but my favorite plants are the ones built in the 60s and 70s. They are examples of what slide rule design can do. The mechanical hydraulic controls are far and away my favorite.
Love to see you making content again!
I have taken my grandchildren to the Discovery Museum Newcastle many times to see the Turbinia. The thing that always strikes mel is the fact that the turbine drove the propeller so fast that the water ate its way through the bronze it was made from. Parsons had to redesign the propeller to something very similar to those we use to this day. Engineers just keep engineering!
So glad to see Engineerguy return to making videos.
I love how this channel goes years with no posts and then there's a post EVERY DAY for like a week! I'm on an engineering binge!
@engineerguyvideo
11 ай бұрын
well ... its not intentional to be gone for a few years ... that's not the goal!
@KayleeKerin
11 ай бұрын
@@engineerguyvideo Having kids will do that to you!
Earlier today, I visited the "Glasgow Transport Museum" which houses the original exposed turbine from the World's first Commercial Steam Turbine Ship - The TS King Edward - The predecessor to many of the magnificent turbine liners of the 20th century such as the RMS Queen Mary or SS United States, and I was thinking to myself: I only wish I knew EXACTLY how this thing works. Well thank you for saving the day! A magnificent and simply yet thorough explanation.
Welcome back!!! So glad you're back in my feed.
Mr. Hammack, these videos are nothing short of phenomenal. Your clear and detailed, yet concise delivery is beyond comparison. Thank you so very much for these videos.
As someone working on a graduate degree in Thermal Fluid systems, I had never heard of Parsons. Thanks for telling his story
@SeriousPigi
11 ай бұрын
The sad truth is that most positions at universities give very little time to prepare for lectures, both regarding the topic itself and the teaching method, as the priority is paper-focused research, grant applications and consulting.
@randolphlee4586
11 ай бұрын
😮My advanced degrees in engineering physics were earned more than half a century ago, and those that have commended this series of videos are correct in saying that they are excellent introductions to the topics covered. And Dan, you are to be commended for your honesty in revealing the shocking lapse in the presentation to you, of one of the foundations of the practical applications of advanced thermodynamics at the turn of the last century. It points up the importance of a firm grounding in history, science and engineering for all students of those topics. KZread presenters of these topics are providing a valuable resource that is even more important considering the absence of such studies in today's science and engineering institutions.
@pyropulseIXXI
11 ай бұрын
I'm working on a graduate degree in theoretical physics
@pyropulseIXXI
11 ай бұрын
@@SeriousPigi wtf are you talking about? I taught myself everything I know, with going to lecture and getting a degree being a mere formality. I honestly cannot stand people that get lead around by the establishment. The problem with modern academia is the 'publish or die' mindset. Recent meta analysis show up to 40% of published studies are fake.. yes, FAKE; the medical field was up to 23% of published papers are fake; that is an insane figure (they said, via 'analysis,' it wasn't more than 2%, but actual studies on the matter show much, MUCH higher figures IN ALL FIELDS). The modern form of academic peer review is doing more harm to science than good. But this doesn't mean you shirk your responsibilities of teaching yourself stuff, and blaming the system for your inability to learn basic stuff is incredibly egregious
@pyropulseIXXI
11 ай бұрын
@@randolphlee4586 He should be teaching himself this. He is pursing a graduate degree, and you are talking as if he still needs his hand held and should be told what to learn as if he is a 5 year old. I am pursing a PhD in theoretical physics, and 95% of all my learning came from myself, with the pursuit of a degree and attending lecture being a mere formality. Despite this, I have also taught myself two languages, various musical instruments to expert level (guitar and piano), and I have major-level knowledge in biology, chemistry, philosophy, history, anthropology, and various other humanities, as well as linguistics. In fact, I can often talk beyond people that have degrees in these fields, despite only having a physics degree. People just make excuses; furthermore, people pretend that them being 'hyper-specialized' somehow excuses them being utterly ignorant of other fields and subjects. It does not excuse you. Field integration is far more important than this era of 'hyper-specialization.' You can still be specialized whilst having a working and professional level knowledge of multiple other fields, but people are just too pathetic and think being a 'renaissance man' is out of reach in modern times. IT ISN'T
Charles Prson's original Turbinia is on display at the Museum of Science and Technology in Newcastle upon Tyne, UK, as are examples of his turbine engines. Also, at the CA Parsons Heaton works, just outside Newcastle, you could occasionally see large turbine rotors being placed inside a huge steel tank where they were spun up for testing and balancing.
The anecdote you closed your book with, you and your father watching the activity of a factory one more time, made me tear up a bit. What a wonderful and bittersweet moment.
It is always an amazing day when we get a new video from the Engineer Guy! This should become mandatory viewing for ANYONE working with turbines.
The quality doesn't disappoint. Always enjoy showing how Engineering is often the fusion of existing technologies / ideas as opposed to the creation of the new, where the fusion ends up being greater than the sum of its parts. Glad to have your content back in my feed again!
The Turbinia is in a museum near where I live (Discovery Museum, Newcastle, UK), I've been to see it a few times over the years and it still gives an aura of effortless speed; it's like seeing a thoroughtbred locked in a stable.
Nice to see more of your content. Welcome back to engineering content creation! I am now 70 and spent my life as a professional engineer, albeit in IT. However I went to school in Newcastle UK , and visited the Science Museum there a few times in my teen years and was fascinated by the Turbinia. There is now a dedicated exhibit hall for the ship. Parsons was one of two great Victorian Tyneside Engineers. The other was Armstrong who is now more famous for creating a UK Arms Industrustry based on heavy breech loading rifled naval guns, but he made his initial fortune developing hydraulic machinery for dockside loading and unloading.
I'm so glad I can watch your videos again, as interesting and clever as ever. They truly are a gem. Thank you very much.
HE'S BACK! WOO HOO!
Biggest W of 2023 is engineerguy's return ❤
thank you for this detailled description!!
You're back! I missed your videos and am so happy to see you returning to teach on KZread more. Thank you for all the effort you put in to these videos, they are always enlightening and soothing to listen to.
So great to have you back posting on YT!
This video contains the most understandable depiction of the working parts of both a piston steam engine and a steam turbine that I have ever seen. Well done, Bill, and it's great to have you posting new videos!
Absolutely fantastic video. Wonderful to have you back, Bill.
This man’s video’s convinced me to leave working at cars for a living and start a degree in engineering, best move I’ve done so far
i've been loving your recent return, please keep this up
I know you took a break for whatever reason, but please carry on with your wonderful explanations. The world would be a poorer place without you.
I wasn't expecting to see a new video of yours appear in my feed but I'm glad I did. Welcome back.
Dude....this is golden. Thanks for sharing.
Clearest and best description of the principles of a turbine and the role of the stationary blades I have ever heard. Thank you!
He's back! He's back! Thanks for yet another amazing video buddy! You were one of the best Engineering educators on youtube IMO.
This is the first video that's been recommended to me (although being subscribed [but without receiving notifications]) since you started back up and I'm so excited you're back educating the world after your break!
Another awesome episode. Glad to have ya back! I look forward to the future series!
I feel like I haven't seen videos from you in a while. I'm so glad to be seeing them now. Really great stuff. Thank you.
It's so amazing that you are back!!! Very happy to see you, you have been missed!
I love how first the idea is crude and rudimentary. Then with future innovations, the technology gets smaller and much more efficient.
Absolutely beautiful presentation. I'm so glad there's more of your content for the world to see
Can't get enough of your videos. Have a BIG welcome back from Idaho! Love the new series
As always, a pristine content. Thank you for the work invested in this! It's awesome and great for students and not only to learn more about the steam era and the innovation of Charles Parsons.
Another great video! Saw your talk at UPenn last month and enjoyed that too. Keep up the great work!
Stellar. SO glad you are back!
I feel at home! Comfy engineering videos. Thank you for continuing with these.
I love your explanation and graphic images, really clear and concise. Thanks.
Welcome back Bill! I've always enjoyed your content.
You have such a great way of explaining things. One of my favorite series as a kid was James Burke's Connections, and this gives me a similar vibe, but much more in depth on each topic.
I've been looking forward to this episode since you announced the new series, turbines are just so damn cool and we're the first thing that got me really interested in engineering. Stators are such a simple yet incredibly impactful addition, what every good engineering solution strives to be.
So glad to see new uploads! This channel is a go-to for NGSS aligned examples for science and engineering practices in my work as a science teacher.
@engineerguyvideo
11 ай бұрын
All licensed Creative Commons: use the videos as you wish!
That was amazing. Glad you are back.
So glad to have you back!
So glad to see you back!!
This video was amazing. I always understood the basic concept of the turbine, but now I feel like I really understand why it works! Bravo!
Amazing video. Having learned turbomachinery design in school, I was blown away by the way you made it so simple to understand. And it's also amazing to learn how Parsons managed to build such a complicated machine way back then. Thank you so much for this channel, Bill, and keep illuminating the world with wisdom!
@howardsimpson489
8 ай бұрын
As a builder of extreme low head hydro turbines, I wonder how many prototypes he constructed to learn what did not work well.
Glad to see you posting again. I love your work and this video is no exception!
So glad to see you teaching here again! Thank you
Great explanation of turbines. It gives the right knowledge without the never ending mathematical explanations we all had to endure in school. Thank you Anthony
Thank for sharing your magnificent knowledge! I really missed those videos
Thank you for these. I enjoyed them as an engineering student many years ago, I appreciate them even more now
Thorough loss of joy and happiness has been a massive problem going into my 30's (37 now), so it means a lot when I say that I genuinely got a little excited to see a new upload here. 🙂
I'm so happy you are well and making videos again!!😃
wow this upload schedule is amazing! loving the videos.
Thank you for another video! I have genuinely missed your content.
A really clear and informative presentation. Thank you so much!
Welcome back Bill. We have been waiting for your fantastic stories!
Absolutely brilliant video.! Never fully understood the intricates of the turbine until now...
amazing video. thanks so much for making such complex topics, so easily digestible.
Your talents of explanation on science is amazing. Love your videos and hope to see more.
Your clear videos are definitely a boon to posterity, bringing to vivid life the way things work and almost more importantly how we got there. As a trained physicist become engineer on a steam project, I find your closing statement of the engineering method intriguing - my college’s engineering school appended “applied science” onto their name :) Clive Cussler wrote a novel about the steam-turbine ships and dreadnoughts, and included Turbinia; it’s in his Isaac Bell series I think it’s called “The Spy”
Thanks, Mr. Parsons I've had a lot of fun and rewarding time fixing turbines over my 40 years as a union millwright.
just wonderful. nice explanation of complex , complicated design of steam turbines
Fanstastic! I wish I had such inspiring conceptual presentations during my engineering studies. Puts this field into a wholistic perspective.
Great Video !! You explained the stators very clearly, Thanks
So good to see you making videos again!
What an amazing video! Glad you are back!
Glad your back!! Always interesting and educational!!
Really nice to see another video from you. Welcome back.
It's great to have you back!
Always fascinated by all the various 'heat engines'. The Navy ship I served on, we used turbines that had two-wheel Curtis stage, followed by several Rateau stages (what we called 'velocity and pressure compounded'). Those turbines were extremely rugged and needed very little maintenance. Great video.
It's so great to have you back! After a 3 year break, were getting state of the art content from the EngineerGuy again!
So happy to see you back!
Glad to see you are posting KZread videos again. Several folks in my book club have read and thoroughly enjoyed your book "The things we make."
@engineerguyvideo
11 ай бұрын
Thanks for sharing this ... The publisher has asked I send them any correction necessary before the paperback edition ... so if they your colleagues saw an errors please forward them to me!
Good to see you are still making videos. I really enjoy watching them and learn so much from them.
I don't think I can quite express how beautiful it is to hear your voice and cadence describing feats of engineering again.
So good to see you back!
Great explanation of the power of steam and the challenges of efficiently harnessing it!
What??? In 6:05, the turbine rotates in the right direction alright, but the direction of the steam comes-in from the wrong side. You need a stator stage at the opposite end and the steam needs to enter from there. Your flow vectors don't add up for a turbine, but basically defines a compressor running in the false direction.
Glad to have you back after many years and great contents as usual.