tesla turbine 200W@20900rpm

this is a project made by me during year 2007/2008 and improved by a friend of mine on year 2008/2009 at the ITI M.Buonarroti of Trento, Italy.

the discs of the turbine are laser-cut stainless spring steel generously made by EBARA pumps - Cles (TN, Italy).

the turbine is supplied of 6bar (0,6 MPa) compressed air, in this video it reaches its maximum efficiency of 21,6% producing 200W at 20900rpm. The range of best efficiency is between 18000 and 30000 rpm, with variations smaller than 30W. There is still some space for further major improvements.
peak spinning speed is 38000rpm @6bar. higher pressure would hopefully increase the value, but the material resists certainly up to 43000rpm, higher values are not reccomended

Category:

Science & Technology

Tags:

• turbina
• turbine
• tesla
• Bladeless
• Jet
• Engine
• Nikola
• High
• speed
• boundary
• layer
• cohesion-type
• Prandtl
• iti
• trento
• itis

[lollum89]

holy crap! I just discovered that the tube joint is completely wrong: there must be an impressive pressure drop in that point! I should try modify that that, the efficency should jump up!

but the bearings aren't in too good of a shape and their housings too.. besides I should assemble again the test apparate, don't have much time to do it..

[lollum89]

Found another way, expect something coming in the short term ;)

[HedgehogStudios1]

Now put like twenty of those in your basement, cut off your electricity, and power your home with those.

[Aleixbiker]

Sounds like a F1 car engine



[lollum89]

@venomousbird it will just explode under centripetal force ;)

just the same for copper..

bye

[lollum89]

@Siewperman Hi, you assumed right with the power, I just put in constant pressure, so reading it and knowing the shape of the nozzle I could calculate the input power. Therefore Pout/Pin=efficency.

the pressure reading wasn't very accureate, pretty much overestimated, and I found a kinda major problem on the fast plug, so real efficency could be higher.

The nozzle could be redesigned but that's another story.

if youd'like I can send you the calculations I made

[Siewperman]

@lollum89 I assume that you managed to get the power output based on the torque generated together with the speed. How did u get the efficiency from there? Would really like to know. Not doubting your method though... just want to learn something.. =D

[venomousbird]

@seanspade use a superconducting material as a rotor and. . . .

[lollum89]

10k views!! Thank you everyone! XD