dry ice is cool ****, when i was like 14 we made bombs with that **** lol. but ya with a temp of -109.3 F its gotta be effective...

 

edited out my post cuz I didnt see the full system before. Why wouldnt you just get nitrous or an intercooler chiller. I think it would be a little easier to get nitrous to refill than dry ice. Nice idea but there have got to be more economical ideas.
Give me the mass flow of the intake air and temp of dry ice and I can figure out how much cooler you can get it. I bet the temp drop is nothing cuz that air flow is so fast. No time to cool the air no matter how cold the cold source is.

 

that's c02 dry ice.

it'll get sucked into your intake, stall your engine out if it's leaking.

besides, that's for n/a car.

you want something for the upper IC pipe.

I don't know how that'll mess with the maf sensor.

would be good for hotwire setup.

 

The critical temperature of N2 is -147C, it can't be liquified above that no matter how much pressure it's under. I doubt any kind of fancy, chilled intercooler could be more cost effective than running a nitrous shot. It's all about getting oxygen into the cylinder. What about a really big oxygen concentrator like people with respiratory problems use!?

Dave

 

haha dave, I was just thinking about the O2 injection for intakes. I don't know if it would work since oxygen is much more explosive than gasoline.. maybe you would have to fix the timing of the motor. That C02 is a sweet idea though. I don't know about passing the air DIRECTLY over the dry ice though since it will choke the engine out.. maybe make a tank that goes around the piping or intercooler to fill up with dry ice. I have heard of people doing this. Its not just a photoshopped picture. On the Speedvision channel I've seen people put 50lb bags of ice on their IM between races.. maybe the same could be done with dry ice DURING a race since it just evaporates. (in a special made tank of course so it doesn't fly out everywhere.)

 

With dry ice there is definately enough surface area to drop the temp. Regular ice no... Dry ice YES...


But it might not work that well on a turbo car like the evo but on something like and eclipse 9non-turbo) this would be really nice add on..

 

muscle car guys have been using dry ice boxes for AGES...and no, it will not leak into your piping and get in the motor...it is just a box secured around the piping...designed only for track use, you wouldnt use this during daily driving...

the usage of dry ice is ancient...much more efficient cooling devices have been designed since then...alcohol/water injection is much more effective than a dry ice box....

 

Yeah, i've seen this on drag cars many times...I can see this as being effective for drag only since this would never hold up in traffic, its only good for short spurts of all out driving. and in reference to the air going by the ice too fast to cool it... this is commonly known as an "ice-catcher", many bongs have successfully cooled their smoke flow with this device lol

 

But you put ice *in* the bong, you don't pack it around it. And unless you have the lungs to burn a Jamaican spliff in one toke the airflow through a bong is nowhere near what a 2L turbo engine at 7000rpm needs. Or so I've heard. And hot water is better, anyway. Hmm, there's a nitrous connection here, too, at least if you have friends who do atomic absorbtion spectroscopy...

Dave

 

that's a great idea... put something really cold on a metal pipe... wha happenes when pipes frost? WATER!

This idea is as good as the tornado

 

like i said...this has been used for generations...its not a "new idea"...that design is just marketed towards sport compacts and such...the moisture (condensation) that would accumulate inside the pipes would be moisture that would have to already be in the system...therefor you wont see much condensation if any...definately not enough to have any adverse effects on your motor...the frost will accumulate on the OUTSIDE of the piping, not on the inside unless water/moisture is present inside of the system

 

that would be neat if it was around the cupholders.

 

negative, compressed gasses are actually the same temperature as the surrounding air. the chilling effect comes when you release the pressure. during the compression phase, the gs and the cylinder it's in actually heats up, sometimes quite a bit. think about it this way: by compressing something, you are actually storing energy.

example #1: paintball gun. As you fire repeatedly, the cylinder containing liquid CO2 gets colder. as the pressure is realeased, the molecules expand, and the liquid vaporizes to its vapro pressure. exothermic reaction, thus cooling.

Example #2: your car's air conditioning system works by pressurizing the R134a, the releasing the pressure over a series of fins. these fins get really cold, thus cooling the air. the refrigerant is then collected, repressurized (it gets pretty hot during pressurization) then it is run, still pressurized, through the cooler mounted at the front of the car. this cools it enough so that when it's released again into the finned area (i know it has a name, just can't think of it now) it's not still screaming hot (thus it would only return to it's original temperature.

interesting stuff, compressed gas. i work in the field, and we have some 4500PSI SCBA's. when you fill those jokers they get almost too hot to hold. they actually have to be filled twice, since the pressure drops as they cool.

JJ

 

Solid form of CO2 = dry ice. Dry ice is called dry ice because when it evaporates, it turns completely to gas instead of water first. There is a name for that, but I forget it.

 

it be sublimation