Rather, is it worth doing?

Okay.. Follow me here.. Boost is good.. Cold air is good.. But, when you ++ the pressure, the temp also gets ++'d.. Hmm.. What to do!

Okay.. Let's say you want to run 10psi.. So, boost up to **30** psi! Intercool that. Now, before you forward it up into your TB, bleed off 20psi from that. Now you have 10psi that should be FREAKING COLD from the depressurization after the intercooling.

Hell..use that extra 20psi blowoff to blow AT the intercooler! It should be pretty cold, too!

So.. any ideas about this? Would I regain back the energy required to boost it up that high? Or am I just psycho?

-Tesla

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91 T/A 305
STB, Airfoil, Hooker cat-back, pseudo-cold air to K&N, Accel coil, !cat, !smog pump.
300 lb*ft of rice churning power.

 

I dont think it would work. There arent pieces fo radjusting your boost on a supercharger as like a turbocharger.

turbos have the advantage of adjusting the source that drives it. basically, the turbo uses the exhaust routed into it. It spins a shaft. the shaft, goes into the front half of the turbo that has an impeller on it that actually movs the air. The exhaust is then kicked out the back half of the turbo. You can adjust the amount of exhaust with a wastegate.

on a blower, you dont have anything like that. There are bypass valves, but they are used for letting ALL the boost out, not just some of it.

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-86 IROC
Vortech stuffed EFI 406 in progress

 

If you overpressurized to 30psi, and then bled off 20psi or so, maybe you would experience a few degrees of cooling, but not much. It's not like an A/C unit where most of the cooling is due to the phase change of the coolant from liquid to gas during the expansion.

I'd have to think about it for a while longer, but at a glance I think the theoretical best you could do would be to accomplish the same results as you'd have running a straight 10 psi of boost with an intercooler. In actuality, it wouldn't even be that good, since the compression and decompression cycles aren't 100% efficient. You'd have a system which was actually less efficient.

To paraphrase the Second Law of Thermodynamics, "there's no such thing as a free lunch."

 

I agree. It would be like taking the 5hp Briggs and Stratton on a go cart and using it to generate electricity to drive the wheels with an electric motor. NOTHING is 100 percent efficient and kart would be fastest w/5hp motor hooked to the wheels.

I had this idea a while back and came to my senses:

Use A/C system cold air to intercool intake charge! NO way A/C system can cool that much air that fast and if it could, A/C compressor would weigh more than me. (220 lbs)

Just crank-up whatcha got (10psi) and tweak from there.

 

Blast.. Ah well.. seemed like a good idea at the time..

Hahaha.. speaking of the good ole' 2nd law, <a href="http://www.theonion.com/onion3631/christian_right_lobbies.html">maybe we should get it repealed!</a>



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91 T/A 305
STB, Airfoil, Hooker cat-back, pseudo-cold air to K&N, Accel coil, !cat, !smog pump.
300 lb*ft of rice churning power.

 

Heee, heeee

 

I was just reading that last night, too. You gotta love The Onion.

 

i am no expert, but any one realize how much hp is require to turn the compressor to put out 30 psi? in the roost style blower to pull something like 25 psi will require around 300+ hp. i agree the centrfugel supercharger is more efficien, but it's not like a turbocharger(run on the otherwise wasted 30% thermal exhaust energy).

dw