hey tell me if it's a total daft idea..but was just thinking about it......well some of you will thinks it's a daft idea... but bare with me..
Ok have been reading about problems of heat, and such..this could also be a good idea for N/A cars aswell..

anyway to the point, why hasnt someone used a car air conditioning system to feed cooler air into either a turbo..as correct me if I'm wrong...... Colder air entering engine = Denser air = More air in cylinder = ECU adds more fuel = Bigger 'BANG' = More power!..

so why hasnt anybody used the aircon system to keep the air cooler than the ambient temp??? even if a car's not fitted with aircon..it could be fitted with Just an electric motor to run the airconditioning unit..

people say they want better intercoolers, to keep the temp down...so why not incorporate an air cooling system into their cooling side of the turbo before it goes to the manifold???...
you must admit this is such a daft idea... be honest some will think about it..some of the top guys on her must have thought about getting colder air into the manifold...

 

the energy required to cool the air is more than the extra energy it gains, so it's a wasted exercise. if you could invent a system that works you'd be really quite rich as you'd have just solved the world energy crisis and invented perpetual motion... lol

 

water inj uses less energy for the same result,i like the way you are thinking tho as its something that went through my mind when i was younger! after all all our cars go better on a cold misty night.

 

well wasnt that interested in the engery it uses..was just wondering about the cooling part of it..really..i mean who's bothered about the energy when you have big powered cossie's and escos's and escort turbos... cant see them bothered about fuel comsumption..wanting better miles per gallon... when they push the BHP over 300-500.. was just wondering about it...

 

exactly...was just wondering about it really.. thats all..yeah i know about the water cooling.. but how often do you have to fill up with water?? ie aircon is there and only needs refilling every so often???..as i said was just thinking my car aint got a turbo..aint got aircon either lol

 

if you are talking about big power engines then the point is not fuel but the fact that the aircon unit sapps 30bhp but the cooler air it produces gives 30bhp.(guess).
back to square one but with the weight of the aircon.

also the charge air temps only become a problem above a certain temp,the topspeed guys will know all about controling this.

 

yeah i know..i did say was just thinking about it... yeah but if you're running the aircon with a electric motor then it wouldn't be taking any of the BHP from the engine??? at least i dont think it will... and if it doesnt then it has to be a gain...

then i think all you would need then is a bigger amped alternator to run the extra juice it takes..just an Idea...

 

i think you answered your own question

 

Everything that draws current or is belt driven saps power from an engine, the loss outweighs the benefits.

 

and i would be supprised if an air-con unit could supply enough cold air to feed the turbo

 

It could, but you'd have to tow it on a trailer behind the car

 

the air con uses electricity to run the pump
this electricity is generated by the alternator
this alternator is run from the crank
the crank produces x amount of pwoer
to run the additional air con pump as well as the extra load on the alternator won't make as much power as you are sapping from the engine (parasitic losses i think they are called) so you not only fail to achieve what you set out to achive in the first place, you are also lugging around extra weight in the form of all the ac gubbins you were trying to get sorted in the first place

i posted the same question up a while back, would using the ac type set up to cool the air in the intercooler work, and was explained the same sort of problems
by cooling the air before it gets to the turbo you are making even more hard work for yourself

much eaiser to design a bigger yet more efficient intercooler/chargecooler or use water injection to bring the inlet temps down or even freeze the inlet with the ac gubbins

 

well i did say it was an idea... hey some of the daftest ideas sometimes work... LOL

 

it's not a bad thought, it just has too many technical limitations thats all. everything had to be invented afterall

 

this answers the question
you would need an air con unit this size to cool the amount of air the engine is consuming
your standard car air con can not cool the quantity of air the engine is consuming

 

why not put wings on the car to fly at 30,000 feet where the air is nice and cold?

 

In concept i'd say you could do it and offer a benefit without any parasitic loss....the process of absorption cooling could, theorectically provide suffcient cooling to offer a significant drop in air temperature on a charge air system....the absorption process could be derived from the exhaust manifold of the vehicle (no heavy compressor) with a lightweight evaporator located in the charge pipe before the intercooler.....the evaporator would have to have a large fin spacing to limit presure drop, but be large/long enough to ensure adequate heat transfer had taken place.....it wouldn't be easy to specify though as charging an absorption system is inherrently difficult..

The other issues mentioned are considerations which could be factored out with careful monitoring and interlocking but as these cars have masive heat reserves in theory i'd say it would be possible......

 

his question was why hasn't any one used the cars air con
nice technical theory though

 

words not required

 

Interestingly, there is a new patented technology about to be launched that will cool intercoolers to below ambient temperature. I dont know much about it, but it sounds as though it has a decent team behind it and actually works.