REFLECTOR:Cooling a canard

[John Dibble]

Yes.  Also, the solubility increases with increasing temperature, but I don't know how
much.  Also the solubility vaires greatly with the type of hydrocarbon.  Some aromatic
hydrocarbons (100LL in the South) have solubilities of 500 ppm.  However, I think 10
ppm applies to engine oils.

John

Chuck Jensen wrote:

> John,
>
> The 10 ppm solubility is about right but I thought that was oil in water.
> Is the solubility for water in oil the same?
>
> Chuck
>
> -----Original Message-----
> From: reflector-admin@tvbf.org [mailto:reflector-admin@tvbf.org]On Behalf Of
> John Dibble
> Sent: Monday, September 15, 2003 7:40 PM
> To: reflector@tvbf.org
> Subject: Re: REFLECTOR:Cooling a canard
>
> Chuck Jensen wrote:
>
> > John, your right about that.  My engine operates at a temp way lower than
> > 190F and I get thirsty several times a day.
> >
> > There is one other dynamic at play here, related to moisture evaporation,
> > that I'm unsure of the impact (if any).  Clearly, water has a higher vapor
> > pressure than oil, so it'll evaporate off more readily.  However, in the
> > engine, any condensation that collects in the crankcase is going to be
> > covered by a thick blanket of oil which may reduce/prevent evaporation.
>
> Yes, the blanket will slow evaporation.  However water does have a small
> solubility
> (~10 ppm) in oil so it can slowly migrate through the oil and evaporate.
>
> John
>