Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.

intercoolers... water to air.... or.... air to air

General Tech Talk

Moderators: toaddog, TWISTY, V8Patrol, Moderators

Posts: 1397
Joined: Sat May 29, 2004 6:58 pm
Location: West Australia Posts: Less than DeWsE

Post by jeep97tj »

Bush65 wrote:
Mytqik wrote:...
However water has a lower level of heat transfer. IE it accepts heat at a slower rate than air, so to cool the same volume of charge air, you will need more water...
Absolute crap! :roll:
Why just say that???? :roll: back it up with some info
Posts: 1513
Joined: Tue Oct 21, 2003 8:06 pm
Location: North East Melbourne

Post by ORSM45 »

think there is also another variable to this question.

location on mounting.

if top mount id say water to air.

if front mount id say air to air.

MaccA
Posts: 5803
Joined: Wed Feb 19, 2003 3:02 pm
Location: Brisbane

Post by ISUZUROVER »

jeep97tj wrote:
Bush65 wrote:
Mytqik wrote:...
However water has a lower level of heat transfer. IE it accepts heat at a slower rate than air, so to cool the same volume of charge air, you will need more water...
Absolute crap! :roll:
Why just say that???? :roll: back it up with some info
Because it is true.

If you want info...

The specific heat capacity of WATER is about 4180 J/(kg.K) - where J=Joules (energy) and K= Kelvin (degrees celcius + 273.15). Specific heat capacity is the amount of energy that is required to raise the temperature of one kg of the substance by 1 Kelvin.

so it takes approx 4.2kJ of energy to raise 1kg of water by 1 degree celcius/kelvin.

By contrast, the specific heat capacity of AIR is 1.05 J/(kg.K) in a constant pressure process e.g. 1 atmosphere (specific heats of gases are calculated slightly differently but this is close enough for here).

So therefore, on a kg for kg basis water has about 4000x the cooling capacity of air.
_____________________________________________________________
RUFF wrote:Beally STFU Your becoming a real PITA.
Posts: 848
Joined: Fri Apr 02, 2004 12:01 pm
Location: Central Victoria

Post by Patroler »

Water - air may be better for very low speed stuff provided you had a decent fan to remove heat.

I guess you could put a thermo on and air to air as well...

neither will cool any lower than ampient temp at best

air to air would have a larger intake volume reducing throttle response?

water to air has a lot more plumbing and things that could go wrong but a smaller intake volume.

I'd say either could be made to work as well as one another, probably comes down to what you can fit in there...
There are no stupid questions, but there are a LOT of inquisitive idiots
Posts: 1559
Joined: Sun Nov 03, 2002 2:35 pm
Location: Captain Creek QLD

Post by Bush65 »

jeep97tj wrote:
Bush65 wrote:
Mytqik wrote:...
However water has a lower level of heat transfer. IE it accepts heat at a slower rate than air, so to cool the same volume of charge air, you will need more water...
Absolute crap! :roll:
Why just say that???? :roll: back it up with some info
Because it is stating the flamin obvious.

If you can't see that, go and stick your head in abucket of water ;)
John
Post Reply

Who is online

Users browsing this forum: No registered users and 130 guests