back pressure ... and one of the laws of thermodynamics
Steam Engine
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Dave (imported)
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fhunter
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Re: Steam Engine
Dave (imported) wrote: Tue Oct 29, 2019 7:39 pm back pressure ... and one of the laws of thermodynamics
Quick search gives at least Giffard's injector - for adding water to the boiler. (http://kesr-mic.org.uk/resources/The+Steam+Injector.pdf )
As for aerodynamics - it is a moving car, enough air to cool the exhaust steam.
PS. What am I missing here?
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Dave (imported)
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Re: Steam Engine
A friend of mine who loves big machines of all types reminded me that Steam Engines were designed to scoop air into the firebox so that the coal burnt hotter and created higher pressure steam. Coal doesn't naturally burn extremely hot unless it is fired with air (or like a Basic Oxygen furnace for producing steel) blasted with oxygen. Think of the bellows at a blacksmith's fire.
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ambiguous (imported)
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Re: Steam Engine
There was a little gem for steam folks on BBC4 the other day "Flying Scotsman from the footplate" . You folks in the States may be able to stream it via BBC I player or android apps. https://www.bbc.co.uk/programmes/b086kn87 Although the link shows it not currently to be available yet I guess it will be in the future.
The Flying Scotsman is a bit of a misnomer as it originally was the name of the train itself and not the locomotive.
It was called the flying Scotsman simply because it could get up to 100MPH when pushed.
In this episode 26 MPH limit on some parts of the track and some steam had to be vented during a downhill bit.
If you do get to see this (Its about an hour long) you will get to appreciate the teamwork that goes on in working on one of these.
For example the engineer can make the work of the fireman a whole lot easier by careful use of the regulator and the constant vigilance needed for hazards and signaling.
No commentary as such just dialogue between crew members.
Good watch for steam buffs.
The Flying Scotsman is a bit of a misnomer as it originally was the name of the train itself and not the locomotive.
It was called the flying Scotsman simply because it could get up to 100MPH when pushed.
In this episode 26 MPH limit on some parts of the track and some steam had to be vented during a downhill bit.
If you do get to see this (Its about an hour long) you will get to appreciate the teamwork that goes on in working on one of these.
For example the engineer can make the work of the fireman a whole lot easier by careful use of the regulator and the constant vigilance needed for hazards and signaling.
No commentary as such just dialogue between crew members.
Good watch for steam buffs.
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Cseriess (imported)
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Re: Steam Engine
There is a great episode of Top Gear, where they race a Norton, a Jaguar and a Steam train from london to Edinburgh. Clarkson gets to shovel coal on the engine.
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2barbells (imported)
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Re: Steam Engine
ambiguous (imported) wrote: Mon Oct 28, 2019 12:12 pm I was watching the history of the Queen Mary on the TV yesterday.
Nice Ship... Probably on the Drawing board in the 1920's but a real innovation for its time.
The oil powered steam turbines could get the thing up to 30 or more Knots winning her the Blue Ribband for the fastest Atlantic crossing.
Commandeered for the war effort she and her sister ship the Queen Elizabeth became troop carriers for the 2nd World war.
Once these ships left port they were on their own as there was nothing that could keep up with them and that included most of the allied battle ships.
Tens of thousands of US troops crossed the Atlantic Owe their lives to those fantastic turbines these ships were fitted with.
I just thought I would big it up a bit for the boring looking turbine.
It is good that those nice folks in the States decided that this was that was too good a ship to turn into beer tins and have given it a bit of space at Long Beach.
My wife and I had an opportunity to stay on the Queen Mary in Long Beach. It is now a floating hotel and has many exhibits detailing many aspects of its life at sea, including its time as a troop transport. It was a great experience and surprisingly affordable.
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ambiguous (imported)
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Re: Steam Engine
Another gem on the tv was on UK TV "channel 5" "The worlds most scenic railway minute by minute" 120 minute run time through some of the more picturesque areas of Scotland. Oddly enough it isn't raining but probably not the most scenic railway. However it is on many Europeans bucket list.
https://www.channel5.com/show/britains- ... by-minute/
Not much dialogue and falls under the genre of slow TV but a good programme to chill to.
https://www.channel5.com/show/britains- ... by-minute/
Not much dialogue and falls under the genre of slow TV but a good programme to chill to.
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ambiguous (imported)
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Re: Steam Engine
I thought we could bring this topic bang up to date with this
A rotary steam engine by Cyclone technologies.
w27heVUxDQ8&feature=emb_logo
A rotary steam engine by Cyclone technologies.
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GordonGG (imported)
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Re: Steam Engine
ambiguous (imported) wrote: Tue Dec 31, 2019 10:54 pm I thought we could bring this topic bang up to date with this
w27heVUxDQ8&feature=emb_logo
[/quote]
A rotary steam engine by Cyclone technologies.
Thanks for that. Interesting.