Hilsch Vortex Tubes...20kW cooling capacity
Is anyone familiar with these and if they know of a setup for a CAI to a blower?
They are suually prescribed in small foot long 4-30cfm units for cooling - I'm yet to find a big one.
I'm thinking there is a great source of energy in the exhaust....hence why Turbos are what they are and the consequent engines are subsequently higher in efficiency than our SC buddies - they recycle this energy.
I'm wondering if someone has run a turbo purely as an air pump off a SC motor and then run 500-1000cfm to a vortex tube capable of cooling the intake air to 0-5degC (32-41F).
This would be the equivalent of taking 20kW of heat from the intake plenum. In our cars, this equates to about - 70F pre IC or the equivalent of an addiitonal 20kW of cooler, but only at high rpm when its needed.
Condensation wouldnt be a big issue - the motor sees the water either way. Obviously you dont want icing conditions to develop.
Sounds a little complex though - to some spanner swingers out there they may know.
I'm still to work out the dimensions of the tube - as I say - I havent found a larger 500-1000cfm unit yet.
1000cfm at 10-20psi from a pair of snail/s may be a tough call as well - it would more than likely be a narrow/wide one (ie: high volume).
The vortex tube discharge can be open to atmosphere at the CAI entry point so that over pressure isnt a problem.
The vortex tube (I believe) is reasonbly insensitive to intake temps - so the turbo compression energy (ye olde AIT's in a different guise) may not be an issue....(maybe me thinks).
The tune would be a challenge to say the least with the added back pressure from the Turbo
Open to suggestions/experience.
They are suually prescribed in small foot long 4-30cfm units for cooling - I'm yet to find a big one.
I'm thinking there is a great source of energy in the exhaust....hence why Turbos are what they are and the consequent engines are subsequently higher in efficiency than our SC buddies - they recycle this energy.
I'm wondering if someone has run a turbo purely as an air pump off a SC motor and then run 500-1000cfm to a vortex tube capable of cooling the intake air to 0-5degC (32-41F).
This would be the equivalent of taking 20kW of heat from the intake plenum. In our cars, this equates to about - 70F pre IC or the equivalent of an addiitonal 20kW of cooler, but only at high rpm when its needed.
Condensation wouldnt be a big issue - the motor sees the water either way. Obviously you dont want icing conditions to develop.
Sounds a little complex though - to some spanner swingers out there they may know.
I'm still to work out the dimensions of the tube - as I say - I havent found a larger 500-1000cfm unit yet.
1000cfm at 10-20psi from a pair of snail/s may be a tough call as well - it would more than likely be a narrow/wide one (ie: high volume).
The vortex tube discharge can be open to atmosphere at the CAI entry point so that over pressure isnt a problem.
The vortex tube (I believe) is reasonbly insensitive to intake temps - so the turbo compression energy (ye olde AIT's in a different guise) may not be an issue....(maybe me thinks).
The tune would be a challenge to say the least with the added back pressure from the Turbo
Open to suggestions/experience.
These tubes use inertia to spin the air and separate the hot and cold molecules, you blow into it and get like 900 degrees out one side and -50 out the other.
There is no such thing as a free lunch, same here.
Lots of the air in goes out, and it requires high pressure air, been there and done that. If you want cooling, vent compressed air ( its dry ) and get the abedetic cooling, this is how they make liquid air, nitrogen, etc.......
Sorry to be a downer again, have visited all these area, oh prices listed - how many do you want.
Woody
There is no such thing as a free lunch, same here.
Lots of the air in goes out, and it requires high pressure air, been there and done that. If you want cooling, vent compressed air ( its dry ) and get the abedetic cooling, this is how they make liquid air, nitrogen, etc.......
Sorry to be a downer again, have visited all these area, oh prices listed - how many do you want.
Woody
ah ...but my lunch is continually getting sqeezed out of the exhaust....
At 6,000rpm stock 14.5psi, I'm pumping in 1,350kW of fuel* .....and only extracting 255kW and 450Nm at the shaft.....the rest my friend is lunch.....**
.....and its on me - prepaid....cost nadda....nothing....well....maybe not nothing...;>)...!
At 20psi - you're talking 1,620kW of fuel.....
Anyone hungry?
*based on 44MJ/kg
**well not quite all of it...gotta run water and oil pumps...but lets say 25% is ex exhaust gas kinetic and heat energy.....300kW....fantastic
At 6,000rpm stock 14.5psi, I'm pumping in 1,350kW of fuel* .....and only extracting 255kW and 450Nm at the shaft.....the rest my friend is lunch.....**
.....and its on me - prepaid....cost nadda....nothing....well....maybe not nothing...;>)...!
At 20psi - you're talking 1,620kW of fuel.....
Anyone hungry?
*based on 44MJ/kg
**well not quite all of it...gotta run water and oil pumps...but lets say 25% is ex exhaust gas kinetic and heat energy.....300kW....fantastic
Last edited by Billy22Bob; Sep 24, 2012 at 09:22 PM.
Iam thinking your numbers are optimistic. Cars are only 20 -30 % efficient and your looking to get over on thermodynamics.
Thermodynamics , the game:
Laws 1 -3
You cant win
You cant get even
You cant get out of the game
10 degree F colder air gets you one percent more power out. Its a heat engine after
all.
Woody
Thermodynamics , the game:
Laws 1 -3
You cant win
You cant get even
You cant get out of the game
10 degree F colder air gets you one percent more power out. Its a heat engine after
all.
Woody
Turbos use the kinetic part of the exhuast energy to drive a turbine which drives a pump to pressurise an intake manifold which in turn produces more power which in turn drives the turbo and around you go...= lag...but efficient 'cause you're using waste gas/energy....
...as opposed to us who pref to take the crank....no lag....that's fine...but inefficient
However.....if they can extract enuf energy via the turbo to 20+ psi 500cfm to one exhaust's worth of energy.....could you pull 2x500 from a 3.2L V6?
I'm thinking run this 2x500cfm @ 20psi air ex the snails....through a couple of vortex tubes and pipe the cold side into your intakes.... and take your ambients from a wet 95F_RH70 (hot humid day) down to a conservative 41F (or maybe even lower) - gotta work out the magic numbers....
Hell throw the condensate in there as well - some like water injection...
Hey - you could possibly even run the hot air side of the tube off to blow dry the missus' hair....
Sorry if I resort to repeating myself .....it's just a tactic in a possibly loosing battle.....
...as opposed to us who pref to take the crank....no lag....that's fine...but inefficient
However.....if they can extract enuf energy via the turbo to 20+ psi 500cfm to one exhaust's worth of energy.....could you pull 2x500 from a 3.2L V6?
I'm thinking run this 2x500cfm @ 20psi air ex the snails....through a couple of vortex tubes and pipe the cold side into your intakes.... and take your ambients from a wet 95F_RH70 (hot humid day) down to a conservative 41F (or maybe even lower) - gotta work out the magic numbers....
Hell throw the condensate in there as well - some like water injection...
Hey - you could possibly even run the hot air side of the tube off to blow dry the missus' hair....
Sorry if I resort to repeating myself .....it's just a tactic in a possibly loosing battle.....
Last edited by Billy22Bob; Sep 24, 2012 at 10:36 PM.
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