Richard Corfield (M0RJC)
A Steam Injector
A Steam Injector. I found this hard to understand when I studied them in my thermodynamics lectures. I still do to some extent and suspect I need to just work through the maths to convince myself that it does work!
The Venturi effect is counter-intuitive. Pressure reduces in a constriction then increases again as the gap widens and the fluid slows down. This device speeds the steam up in a constriction and mixes it with water. It then widens the jet to slow it down and increase pressure - to above the pressure in the boiler! Now that is quite amazing, but also very counter-intuitive.
Maybe it's like using the steam to throw water at a wall. The steam condenses which also effects things.
A Steam Injector
A Steam Injector. I found this hard to understand when I studied them in my thermodynamics lectures. I still do to some extent and suspect I need to just work through the maths to convince myself that it does work!
The Venturi effect is counter-intuitive. Pressure reduces in a constriction then increases again as the gap widens and the fluid slows down. This device speeds the steam up in a constriction and mixes it with water. It then widens the jet to slow it down and increase pressure - to above the pressure in the boiler! Now that is quite amazing, but also very counter-intuitive.
Maybe it's like using the steam to throw water at a wall. The steam condenses which also effects things.