The Steam Turbine: The Surprising Relationship of Engineering & Science
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
_Episode 2:_ Controlling Turbulence and Evolution: How Engineers Overcome Uncertainty forthcoming
_Episode 4:_ The Microwave Oven Magnetron: What an Engineer Means by “Best”
*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
1 view
10
1
3 weeks ago 00:01:20 1
Windblown | Steam Early Access Launch Trailer
3 weeks ago 02:01:18 1
Half-Life 2: 20th Anniversary Documentary
4 weeks ago 00:01:17 1
Pathfinder: Wrath of the Righteous - Official Game of the Year Edition Trailer
1 month ago 03:01:45 1
Relax mind, get some coffee ☂️ Lo-fi Rain / Jazzy HipHop / Chillhop
1 month ago 00:02:51 1
🎵OVERWATCH: No Mercy - The Living Tombstone 🎵
1 month ago 00:20:02 1
NEW Thermaltake TH360 V2 Ultra ARGB Sync AIO CPU Water Cooler With IPS LCD Screen
1 month ago 00:01:45 1
Europa | Steam & Switch Official Launch Trailer
1 month ago 00:23:22 1
#12 ЗАКОНОМЕРНЫЙ ЖИВОТНЫЙ ФИНАЛ THE PLANET CRAFTER Planet Humble прохождение на русском
1 month ago 00:08:02 1
ЗАСМЕЯЛСЯ ПОДПИСАЛСЯ | Тест на Психику Челендж | ЛУЧШИЕ ПРИКОЛЫ 2024 года | УГАР #105
1 month ago 04:42:51 1
Grand Beatbox Battle 2024: World League | Day 1 | Official Livestream
1 month ago 00:00:55 5
Trevithick - The World’s First Locomotive
1 month ago 00:10:19 10
What’s New in Subverse 1.0? Official Overview
1 month ago 00:01:47 1
The First Berserker: Khazan | Opening Cinematic | G-STAR 2024
2 months ago 00:02:10 2
Active Matter — Announcement Trailer
2 months ago 00:01:14 1
Don’t Be Afraid 2 - Official Launch Trailer
2 months ago 00:46:09 2
I do not recommend: ’Dragon Age: The Veilguard’ (Review)
2 months ago 01:41:03 1
Передел СМУТЫ / Dragon Age даром / Дата Squadron 42 / Конец Killzone / WoW изменился / Провал Intel
2 months ago 00:01:04 1
Steam Scream 3: Official Trailer
2 months ago 00:01:02 1
Moon Mystery - Official Launch Trailer
2 months ago 00:47:23 56
Total War Has Fallen
2 months ago 00:00:36 1
First Look at New Top-down Tactical Shooter | Project ARC