Welcome to ModelEngineMaker !If you have problems registering or logging in, please use the contact menu option to request assistance.
How can a flow of steam from the boiler, at a given pressure, inject a larger mass flow of water into the boiler at, or slightly above, the same pressure?
Quote from: jadge on June 16, 2015, 11:51:49 AMHow can a flow of steam from the boiler, at a given pressure, inject a larger mass flow of water into the boiler at, or slightly above, the same pressure? Don't forget that the water is cold, when the hot steam draws in and mixes with the cold water it forms a vacumme, which in turn sucks in more cold water the combination of which are at a higher pressure than the original steam, this higher pressure mixture can then force its way into the boiler . Which is why they don't work with warm water Jo
Don't forget that the water is cold, when the hot steam draws in and mixes with the cold water it forms a vacumme, which in turn sucks in more cold water the combination of which are at a higher pressure than the original steam, this higher pressure mixture can then force its way into the boiler . Which is why they don't work with warm water Jo
I'm not sure I follow that. As far as I can see from my calculations the jet of steam from the steam cone is already below atmospheric pressure.
Quote from: jadge on June 18, 2015, 10:34:55 PMI'm not sure I follow that. As far as I can see from my calculations the jet of steam from the steam cone is already below atmospheric pressure.And it is HOT for Stew's boiler at 90Psi on the gauge, taking into account atmospheric pressure, that would be about 166 degrees C.
A couple of questions:1) You seemed to be working from a book or printed instruction for the design; is it yours or which other, and is it available?2) the delivery cone is usually recommended to have a 6deg cone angle, but you seem to use 9deg. Why is that?