Date:         Mon, 17 Jul 1995 16:44:03 -0700 (PDT)
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         Scott Beckstead <conrad@user.centcon.com>
Subject:      Re: Sqirting water on an oil cooler et al

On Mon, 17 Jul 1995, David Carment wrote:

> When the air is "thick and around 68 degrees" - this is when the
> air-cooled engines
> run their best - especially at dusk on a cool summer's eve, just after a
> rain storm has passed through...maybe this relates to other factors as well. 
> 
> Squirting the radiator or oil cooler can't be that much different than
> driving through a very very very thick fog, or maybe the Bavarian Alps?
> So why would putting dense moisture on a hot surface make that
> device less capable of radiating heat?
> 
> Apropos the water injector system - on Westys you could use the water pump
> with a second line going under the car.....or why not put a water jacket
> around the oil cooler?
> 
> 
> DC
> 
> 
> 
> ----------------------------------------------------------------------
> David Carment
> School of International Affairs
> Carleton University
> Ottawa, Ontario
> K1S 5B6
> voice - (613) 788-2600-6662
> fax - (613) 788-2889
> Email address: dcarment@ccs.carleton.ca
> ----------------------------------------------------------------------
> 
Ok It works like this.  What happens to the cooling fin when it is cooler 
than the air around it?  It absorbs heat right.  If it's absorbing heat 
back from the air it isn't radiating heat into the air right.  Thermo 
dynamics are wonderfull things but kinda tricky.  You want to keep the 
flow of heat in one direction and cooling the fins externaly just slows 
down their heat radiating ability from the internal heat source.  As I 
said if you can just pump very humid air around the fins then you would 
get the efficiency you want.  Putting a water jacket around an air cooled 
engine makes it a water cooled engine!

Scott

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'69 transporter 
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