Tesla patented the first bladeless turbine. He was never able to
commercialize it.
Several small firms and individuals have done extensive work with offshoots
of this technology, including geothermal utilization. Nothing has proven
practical to date in this application.
If these folks have solved the many problems they deserve a kudo. But, it
would be wise to wait and see.
Mark
From: "Frederick Sparber" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: [email protected]
Subject: Re: IAS's Bladeless Turbine & Hero's Engine
Date: Fri, 5 Aug 2005 10:37:10 -0500
A new engine for running off low grade heat?
In principle with a lot of tangential "jets" drilled into a rotor in a low
pressure condensing chamber
it should work all the way down to millibar pressure . Can it replace a gas
turbine or rotary "Wankel" ?
http://www.keveney.com/Wankel.html
http://iaus.com/turbine.htm
" How Does the Propulsion Turbine Work? Rather than relying on turbine
blades to spin the turbine cylinder, IAS's Propulsion Turbine is designed
to turn the cylinder without blades. To do that, IAS's patent-pending
bladeless turbine utilizes a rocket nozzle to direct steam-a very different
approach than traditional turbines."
"Rockets, widely recognized as the most efficient engines, are typically
propelled by steam. Based on preliminary tests, the IAS-designed rocket
nozzle 99 percent efficient, and its net thermal efficiency is above 75
percent when traveling at 50 percent of the velocity of the steam exiting
the nozzle. This efficiency continues to increase as the velocity of the
rocket nozzle exceeds 50 percent of the velocity of the exiting steam."
"Traditional turbine performance relies upon the environment within its
blade chambers. If steam condenses on the blades, a sharp drop in
efficiency and damage to the turbine can be the result. Traditional
multi-stage turbines require dry, high-quality steam. This is more
expensive to produce and maintain. IAS's new turbine is structurally
unaffected by low quality steam."
http://physics.kenyon.edu/EarlyApparatus/Thermodynamics/Heros_Engine/Heros_Engine.html
"We know nothing biographical about Hero of Alexandria. Even his dates are
unknown, but internal evidence suggests that he was writing about 62 A.D.
It is not even clear if he invented the two devices which bear his name:
Hero's Fountain and Hero's Engine. "
"Hero's Engine is today a generic name for any device which propels
itself by shooting steam from one or more orifices. These devices are also
known as Eolipiles."
"The two engines in the picture at the left are from the apparatus
collection at Yale University. After filling the sphere with water, a flame
is applied to it until the water boils, and the device begins to rotate."
Frederrick
