Cooling with oil

[jtoomasson at yahoo.com (Jeff Toomasson)]

Just to provide a little clarification, oil wouldn't work in this
application because its specific heat coefficient is MUCH higher than water
or glycol. Since pure water has a low specific heat (dH = 1.0), it has a
greater cooling capacity in that it can _exchange_ heat faster that a medium
with a higher specific heat - also provided it has an outlet to exchange
that heat to (i.e., radiator). You are right that oil could absorb more heat
in the long run but the internal combustion engine generates so much heat so
fast that it has to exchange it faster that a high specific heat material
could provide.

Aside from its corrosive properties pure water is a nearly perfect heat
exchange medium in a pressurized system.

HTH, JT

----- Original Message ----- 
From: "Dan Bubb" <jdbubb@ix.netcom.com>
To: "Kervin Ridgley" <kridgley@brownscar.com>; "list"
<scirocco-l@scirocco.org>
Sent: Thursday, September 25, 2003 7:52 AM
Subject: Re: Cooling with oil


> Oil is more viscous than water so it would pump slower. That would reduce
> cooling capacity.
> Oil also has less thermal capacity than water so the amount of heat that
> could be carried by a given volume of coolant would also decrease. That
> would also decrease cooling capacity.
> OTOH you would never have any corrosion in your cooling system!
> Dan
>
> ----- Original Message -----
> From: "Kervin Ridgley" <kridgley@brownscar.com>
> To: "list" <scirocco-l@scirocco.org>
> Sent: Thursday, September 25, 2003 10:10 AM
> Subject: Cooling with oil
>
>
> I was wondering if you could take the coolant out of a JH engine and fill
it
> with oil and have it work.  I don't plan on doing it, I was just
wondering,
> maybe I just need another cup of coffee.
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