An additional assist comes from altitude. The boiling point decreases with
altitude so, for example, at 6000 msl pure water boils at about 94 deg C, at
8000 msl 92 deg C, and at 10000 msl 90 deg C. Of course things are not that
simple either because the "antifreeze" added to the water raises the boiling
point at any given altitude, with the amount of boiling point elevation
depending on the concentration.
Best regards,
Rob Housman
Europa XS Tri-Gear A070
Airframe complete
Irvine, CA
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of R.C.Harrison
Subject: Europa-List: Was Flying report OSHKOSH..Now is oil/water
evapouation temps.
Hi! Guys.
Sorry to "butt in" but itdoesn't have to boil to evaporate at operating
temps below boiling the engine crankase breather should loose lots of water
vapour.
However the oil will have been designed to be most effecient in lubrication
at the normal operating temps of greater than 100deg C.
(IMHO) Probably this is why my engine needed replacement piston rings at 452
hours with the oil temps hardly ever getting over 50-70 deg C
regaards
Bob Harrison. G-PTAG
----- Original Message -----
From: "Norbert P. Hoffmann" <Norbert.P.Hoffmann@t-online.de>
Subject: Re: Europa-List: Flying report OSHKOSH
P. Hoffmann)
>
> Am Donnerstag, 12. August 2004 10:57 schrieb Simon Smith:
>
> > I thought that is was important that the oil temp did go above 100C /
212F
> > to boil off any water vapour in the oil.
> >
> > Any thoughts?
> >
>
> In a standard installation, the oil temp. sensor measures the oil
temperature
> >after< the cooler. The actual temperature is higher.
>
> Norbert
> D-EUPA
|