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Idea for Turbine "almost Stirling" Heat engine.Pls comment.

Posted: Sat Mar 08, 2008 8:21 am
by stuart1648
A newbie so pls bear with me.Idea: Cylinder of non-conductive material
(eg-plastic)with heat exchanger elements CLOSELY FITTED at both ends
and turbine (eg-fan) fitted into middle of cylinder . Hot Exchanger
draws air through small gap around it, heats it and expands it toward
fan; cold exchanger simultaneously draws the air from fan and expels
it through small gap around it.
In short a convective current is created which spins the centrally
located fan which produces electricity.
The gap size is crucial; must be small enough to allow pressure
gradient to build inside tube but large enough to allow flow-through.
It should be fairly easy to build feedback circuit to adjust gaps as
temperatures of exchangers change.I personally like geo-thermal for
delta h. Comments? Thanks, Stuart

"Idea for Turbine "almost Stirling" Heat engine.Pls comment

Posted: Sat Mar 08, 2008 10:55 am
by stan.hornbaker
A complete detailed description, with a diagram or drawing, if you can provide one, posted to the files /drawings will be necessary for anyone to comment on your proposed system.

The complete detailed description will avoid multiple post of replies asking for more details.

Response to Idea for Turbine "almost Stirling" Heat engine.Pls comment.

Posted: Wed Feb 18, 2009 8:02 pm
by tom.eberhard
I'm working on a similar idea, have you taken any steps beyond your post? (like computer simulation, prototype, etc?)

Response to Idea for Turbine "almost Stirling" Heat engine.Pls comment.

Posted: Wed Feb 18, 2009 8:17 pm
by stan.hornbaker
Sounds like a description of a bootstrap engine is such there be.
A Stirling engine is a closed system with heat applied externally and rejected to the cold sink, with mechanical energy turning a flywheel or other means of mechanical connection to another device.

IF you depend on convetive circulation to generate power one of us is in the wrong business. Capice?