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..
no generator, I attached an optical rpm counter and a brake with a dynamometer, we made various tests at different rpms and now we've got both torque/rpm and power/rpm graphs. we intended to try with various pressures but didn't make it in time..
@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
@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
@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
@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
What is the diameter of the discs and the spacings? Your air exit holes seem small. Have you made any calculations regarding this? What type of bearings did you use?
I used normal 10x30x9mm ball bearings, in fact I had to change them after some time, there are some problem vith tolerances of the bearings' housing: tempered steel vs aluminium, you can imagine...
the disks are 100mm diameter and 0,5mm thick, and the spacing is also 0,5mm
I did not made any calculations regarding the exit holes, but those aren't on this side, you can see them in my other video, not very well tough...
It is possible to buy hybrid ceramic 608 skate bearings which run to nearly 100,000 rpm. The optimum spacing for steam and gases is 1.2mm. I have seen the exit holes in a video from another Italian gentleman (your tutor perhaps?). My concern is that they look quite small.
the exit holes are't only holes, are enlonged then the area is quite big.
for the spacing this is the second effort: I first tried with 1mm but it leaded to an efficency of 4,7%, in this version speed and power dramatically increased. at this point the whole design should be changed in order to achieve better results.
there are only three videos of this turbine on the net and are mine and another one, the project is for ITI of Trento, not ITI Omar
Now put like twenty of those in your basement, cut off your electricity, and power your home with those.
HedgehogStudios1 4 months ago
Sounds like a F1 car engine
Aleixbiker 8 months ago
10k views!! Thank you everyone! XD
lollum89 1 year ago
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 1 year ago
Found another way, expect something coming in the short term ;)
lollum89 10 months ago
Above 40 000 these start to really howl! Nice machine what kind of generator? bi polar AC or DC?
TheTeslaJet 2 years ago
no generator, I attached an optical rpm counter and a brake with a dynamometer, we made various tests at different rpms and now we've got both torque/rpm and power/rpm graphs. we intended to try with various pressures but didn't make it in time..
lollum89 2 years ago
@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
Siewperman 10 months ago
@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
lollum89 10 months ago
This has been flagged as spam show
@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
Siewperman 10 months ago
This has been flagged as spam show
@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
Siewperman 10 months ago
Excellent work! Thanks for the additional info on the discs.
Can you tell me something about the nozzle details? What would the orifice diameter be? Is it round?
MrfixitRick 2 years ago
the orifice is rectangular 8x2mm, but it should be redesigned
lollum89 2 years ago
Use copper disks next time.
Rev it to 60,000 rpm. Leave it on for 5 days.
You've just made a small gravity shield. No joke.
seanspade 2 years ago
@seanspade use a superconducting material as a rotor and. . . .
venomousbird 1 year ago
@venomousbird it will just explode under centripetal force ;)
just the same for copper..
bye
lollum89 10 months ago
Hi,
What is the diameter of the discs and the spacings? Your air exit holes seem small. Have you made any calculations regarding this? What type of bearings did you use?
Cheers, Wilson.
evildrome 2 years ago
I used normal 10x30x9mm ball bearings, in fact I had to change them after some time, there are some problem vith tolerances of the bearings' housing: tempered steel vs aluminium, you can imagine...
the disks are 100mm diameter and 0,5mm thick, and the spacing is also 0,5mm
I did not made any calculations regarding the exit holes, but those aren't on this side, you can see them in my other video, not very well tough...
I hope I have been useful XD
lollum89 2 years ago
It is possible to buy hybrid ceramic 608 skate bearings which run to nearly 100,000 rpm. The optimum spacing for steam and gases is 1.2mm. I have seen the exit holes in a video from another Italian gentleman (your tutor perhaps?). My concern is that they look quite small.
All that aside, you have made a good effort.
evildrome 2 years ago
the exit holes are't only holes, are enlonged then the area is quite big.
for the spacing this is the second effort: I first tried with 1mm but it leaded to an efficency of 4,7%, in this version speed and power dramatically increased. at this point the whole design should be changed in order to achieve better results.
there are only three videos of this turbine on the net and are mine and another one, the project is for ITI of Trento, not ITI Omar
lollum89 2 years ago
@evildrome
I use skate bearings, very good hunch you have there. They also reduce rust or other oxidizing issues.
TheTeslaJet 2 years ago