Thanks for this. Too many videos get it wrong- the steam does not drive the piston, negative pressure does. It’s like creating a vacuum which the external atmospheric pressure pushes down on with great force (psi).
Thanks a lot. It was the best I saw up to now. It shows we did not get the sentence " we should not invent the wheel". We have to understand the wheel invention mechanism.
when designing storage tanks you have to install a vacuum breaker so it won't collapse if the wall is thin. Also now we use nitrogen to inert vessels to exclude air to prevent flammables from igniting (like gasoline) but in the old days they purged with steam to get the air out. Amazing a Newcomen engine could have a piston force of 90,000 psi. I calculated the force on a steam locomotive piston once at 200 psi and I think that is in the same range although a much smaller piston area.
Newcomen's machine was an Atmospheric Pump. It provided Atmospheric Power, ( natural air pressure) a whole 10psi.max. So, why call it a Steam Engine? A Steam Engine is different, It provides Steam Power. That's why it's called a Steam Engine. It could provide High Pressure Steam Power, as much power as your engine could take, which explains why there were so many explosions. James Watt dumped Newcomen's Atmospheric Power and Arkwright's Water-Power for High Pressure Steam Power. Like James Watt's High Pressure Steam Engine. It was the difference between an Industrial Revolution and no Industrial Revolution!
Yes. +ve P. P. So 18th century is 1700 to (1800-1). Is it? Diagram of a Newcomen steam engine, used at mines in the 18th century. I see these words: 1. MINE PUMP 2. PUMP ROD 3. ROCKING BEAM 4.COLD-WATER PUMP FOR ENGINE 5. COLD-WATER TANK 6. COLD-WATER VALVE 7. CYLINDER 8. PISTON 9. WEIGHT OF ATMOSPHERE 10. BOILER 11. COLD-WATER SPRAY 12. RODE TO OPERATE STEAM VALVE
Newcomen's machine was designed and built to supply Atmospheric Power. Watt's machine was designed and built to supply Steam Power. They are two different machines, so they shouldn't have the same name. What's wrong with Atmospheric pump and Steam pump, seems pretty logical to me. Or is it something to do with the Steam Engine being the Industrial Revolution, logic goes out the window? There's an Industrial Revolution's worth of difference between Newcomen's Atmospheric engine and Watt's Steam engine.
It's powered by atmospheric pressure, so why call it a steam engine? A steam engine's powered by steam, like James Watt's engine. It's a different engine.
Thanks for this. Too many videos get it wrong- the steam does not drive the piston, negative pressure does. It’s like creating a vacuum which the external atmospheric pressure pushes down on with great force (psi).
Thanks a lot. It was the best I saw up to now. It shows we did not get the sentence " we should not invent the wheel". We have to understand the wheel invention mechanism.
Great demo
when designing storage tanks you have to install a vacuum breaker so it won't collapse if the wall is thin. Also now we use nitrogen to inert vessels to exclude air to prevent flammables from igniting (like gasoline) but in the old days they purged with steam to get the air out. Amazing a Newcomen engine could have a piston force of 90,000 psi. I calculated the force on a steam locomotive piston once at 200 psi and I think that is in the same range although a much smaller piston area.
nice demonstration
I wonder what could be done with this concept using modern materials and technology. Low pressure steam is pretty safe, and this is a lot of power.
It is atmospheric pressure + thermal shock( rapid change in temperature caused can material to fail by spraying cold water into a hot surface)
Great explaination
so besides crushing itself does it have any application in the real world!!!
the barrel had to be reheated so that it would return to its shape
Newcomen's machine was an Atmospheric Pump.
It provided Atmospheric Power, ( natural air pressure) a whole 10psi.max.
So, why call it a Steam Engine?
A Steam Engine is different, It provides Steam Power.
That's why it's called a Steam Engine. It could provide High Pressure Steam Power, as much power as your engine could take, which explains why there were so many explosions.
James Watt dumped Newcomen's Atmospheric Power and Arkwright's Water-Power for High Pressure Steam Power.
Like James Watt's High Pressure Steam Engine.
It was the difference between an Industrial Revolution and no Industrial Revolution!
That is my logistic paradigm that they do not want to SHIFT.
Yes.
+ve P. P.
So 18th century is 1700 to (1800-1). Is it?
Diagram of a Newcomen steam engine, used at mines in the 18th century.
I see these words:
1. MINE PUMP
2. PUMP ROD
3. ROCKING BEAM
4.COLD-WATER PUMP FOR ENGINE
5. COLD-WATER TANK
6. COLD-WATER VALVE
7. CYLINDER
8. PISTON
9. WEIGHT OF ATMOSPHERE
10. BOILER
11. COLD-WATER SPRAY
12. RODE TO OPERATE STEAM VALVE
It's an atmospheric engine.
James Watt's engine is a steam engine. Reverse the process and you could describe a Watt engine!
Newcomen's machine was designed and built to supply Atmospheric Power.
Watt's machine was designed and built to supply Steam Power.
They are two different machines, so they shouldn't have the same name. What's wrong with Atmospheric pump and Steam pump, seems pretty logical to me. Or is it something to do with the Steam Engine being the Industrial Revolution, logic goes out the window?
There's an Industrial Revolution's worth of difference between Newcomen's Atmospheric engine and Watt's Steam engine.
It is not morning there?
It's powered by atmospheric pressure, so why call it a steam engine?
A steam engine's powered by steam, like James Watt's engine. It's a different engine.
Ok.
Just put the pressure back again.