Re: GAS-L: How does a TT work

[Kevin Chisholm <kchishol@fox.nstn.ca>]

The blades of a gas turbine extract a given percentage of the energy in
the fluid passing them. Is there any reason to believe that the TT
machine will extract a greater percentage of the energy in the gas
stream?

Is the TT constrained by the same thermodynamic efficiency constraints
as the gas turbine?

Discussions on whether it is a viscosity device or a boundary layer
device could be seen as questions of detail, like if IC engine pistons
were square, and someone then got the idea of making them round: There
would be a potential for an incremental improvement, but not a
"breakthrough" improvement.

Could someone please elaborate on the reasons why the TT concept is
inherently better than others?

Thanks very much

Kevin Chisholm 

"Schmidt, Darren" wrote:
> 
> I really believe it is a viscosity device (fluid dragging on the plates).
> There have been some models done on liquid pumps, which use boundary layer
> theory to explain performance.  They match fairly close to actual
> performance.  I do not clearly understand the case for compressible fluids.
> I have funding to at least complete performance testing of a small unit (50
> - 100 hp).  Eventually I hope to secure some further funding to gain a
> better understanding of theory, but for now we are just trying to prove this
> type of turbine can work at resonable efficiencies, and professionally
> document the performance characterisitics.
> 
> Note: if you add surface features to the disks you get better performance
> resulting from increased drag not lift as in the case of a turbine blade.
> 
> Darren D. Schmidt, Research Manager
> Energy & Environmental Research Center
> PO Box 9018
> Grand Forks, North Dakota 58202
> dschmidt@eerc.und.nodak.edu
> Ph (701) 777-5120
> Fax (701) 777-5181
> 
> -----Original Message-----
> From: IanWade@aol.com [mailto:IanWade@aol.com]
> Sent: Wednesday, June 07, 2000 9:01 AM
> To: gasification@crest.org
> Subject: GAS-L: How does a TT work
> 
> Hi list
> This is a serious list.  Sometimes on Tesla list they appear to be
> discussing
> UFO's etc.  (Believe me I mean it).
> Now Tesla said his turbine worked on adhesion and viscosity not pressure
> operating on a boundary layer.
> 
> Question for a serious list.  Is this correct?  How does or do you think a
> TT
> works.
> 
> Peter all speculation accepted.  Darren as a builder anything you think you
> know spill the beans.  I just want to know what is true and what is not.
> 
> For example does this boundary layer in effect work a bit like the balde of
> a
> conventional turbine or is there something else going on.
> 
> Jonathan
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