AC Intercooling?

[pc]

Use a tank of gas compressed into a liquid and regulate it's flow/expansion in the cooling device as needed by computer?
This way you get air-con without having the pumping equipment or parasitic loss on the vehicle. The gas can be compressed and cooled on the sideline by other equipment.

problems:
- adds weight to the car
- need a smart control system, probably tied into the engine computer
- limited run time (may not be worth it at all)
- potentially dangerous with uncontrolled release (bad crash)
- expensive

i'm sure some complicated math would show it's viability... the calculations are beyond me though.

[touge_ae101]

although the group of critics which is toyspeed think don't this is a good idea, i reckon it is a fantastic idea that i've thought about before but it seems you have the perfect platform to do it with!

apparently 1UZ's have a awesome AC pump that some guys use for airbags so that might be a start.. but you could just run the refridgerant lines through the intake pipe to cool the charge just before the plenum? then all you need to do is keep the coolant cold and circulate it.
i would imagine that the extra power you gain from having a constant 5-10deg cooler is much greater than the power it saps.

[iOnic]

You think it's a fantastic idea to take something that's only designed for cooling ambient air and use it to cool superheated intake charge for 6 hours at 90%+ duty cycle? It's been done before - google it. It was an a big back of dicks in reality. It's just a very complicated and heavy setup to achieve something that can just as easily be achieved with W2A intercoolers/water sprayers/methanol injection/alcohol fuel

[RomanV]

An interesting idea that I've heard of somewhere (someone on here mentioned it?) but never seen implemented, is having a giant air resevoir tank somewhere in the car.

The BOV feeds excess air into the tank, and pressurises it to a certain psi level.

Then when the car is off boost, it pumps all of the air from the tank back into the intake manifold, bringing the boost threshold to a lower rpm and minimising lag.

Relevance to thread = minimal, but I think you should do it anyway Redmist

[pc]

i would imagine that the extra power you gain from having a constant 5-10deg cooler is much greater than the power it saps.

http://en.wikipedia.org/wiki/Second_law ... modynamics
While you may be able to store up some "cooling" for use at occasional times, you can't have it running all of the time and have it effective... net result will be a loss of power.

[RedMist]

i would imagine that the extra power you gain from having a constant 5-10deg cooler is much greater than the power it saps.

http://en.wikipedia.org/wiki/Second_law ... modynamics
While you may be able to store up some "cooling" for use at occasional times, you can't have it running all of the time and have it effective... net result will be a loss of power.

Its the nature of offroad racing to be agressive, but in bursts. The only reason you'll ever use full throttle on 500+hp is a quick prod to pull the back end around for better attitude in corners or when you're mid way into acceleration on a long straight (the beginning you're controlling spin, the end you're controlling flight).
As stated the complexity of the solution, even given that I could cool the charge perhaps 90% of throttle utilisation, means that I'll not implement it.
On reflection most of the time I race it's in the depths of winter. It's no wonder my silly little chinese MR2 intercoolers work so well... ambiant is often below zero C!

[RedMist]

An interesting idea that I've heard of somewhere (someone on here mentioned it?) but never seen implemented, is having a giant air resevoir tank somewhere in the car.

The BOV feeds excess air into the tank, and pressurises it to a certain psi level.

Then when the car is off boost, it pumps all of the air from the tank back into the intake manifold, bringing the boost threshold to a lower rpm and minimising lag.

Relevance to thread = minimal, but I think you should do it anyway Redmist

Why have a noiseless lag reducing system?.. when I can have good old fashon "bang bang!" antilag. YEAH BABY!
Becides it'll either have a GTX or a EFR on it. Both of which are lag reducing turbo's. I'm thinking GTX3076r so I can run antilag or EFR7064 to keep everything integrated and nicely packaged.

[pc]

NOS not allowed?

[molex]

Run it on E85 + have an upstream injector for mad cooling effect?

Run conventional WTA with load dependant water misters, these can actually be quite efficient with the water usage if it's tuned correctly and if you're right about the types of throttle position averages you're likely to use. Evaporation is about the only feasible way i can think of to reduce IAT's with low compexity/not violating physics

[KinLoud]

Yeah, 180 degree turn in airflow is used in some aircraft turbine engines, i.e. PT6 family of turboprop engines.
They have a little flapper door that can be opened to allow ice to be carried out of the airduct due to it's inertia.

I'm thinking extra forced cooling of all radiators and intercoolers would be most effective.
All radiators and coolers at 90degrees to airflow and shrouded to protect from direct mud impact.
Have extra/bigger alternator to power the big powerful fans.
Or
Go the Toyota way on some of the bigger engines (1uz, 2jz) and use hydraulically powered fans.

Ken

[gepsk8]

why not change turbos to marine turbos run pure glycol cooling exhaust housings, with small pump & radiator.

[Malcolm]

Heat generated in the intake air by turbos is little to do with conduction from the housing and a lot to do with compressing it. A colder turbo will make SFA difference to intake temps, but will probably perform worse if you're removing energy from the exhaust gas stream before sending it through the turbine

[blindnz]

liquid nitrogen is the answer...

[matt dunn]

All radiators and coolers at 90degrees to airflow and shrouded to protect from direct mud impact.

I don't think air flow at 90 deg to the radiator is the most effective way to take the most heat out of it. A little angle of attack is better as you get more air contact with the surfaces.

[iOnic]

liquid nitrogen is the answer...

Wouldn't stay liquid for very long - and that stuff is so cold that it would make just about anything it came in contact with brittle to the point that it shattered. The answer has already been mentioned multiple times in this topic.