Date:         Mon, 3 May 1999 01:41:48 -0400
Reply-To:     David Beierl <synergx@IBM.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <synergx@IBM.NET>
Subject:      Re: Lowering Cooling Sys pressure
Comments: To: "Joe L." <jliasse@TOAST.NET>
In-Reply-To:  <004b01be9517$f8fd7860$51891e26@eucjliasse>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 23:49 5/2/99 -0400, Joe L. wrote:
>      Correct me if I am wrong but does not lowering the system pressure also
>lower the boiling temp of the coolant? Should this be seen as desireable?

It does, Joe -- but no harm b/c if the coolant gets hot(ter) it will raise
the system pressure and hence boiling point.  The low pressure only
pertains when the heat load is such that the thermostat is not completely
open.  Once the thermostat opens fully any additional load will raise the
temperature toward the next setpoint, which is the fan turnon
temperature.  If this is also lower than stock then the system temp and
pressure will again be lower than stock until the heat load overcomes the
ability of the fan, at which time the temp and pressure will rise again
toward the fan high-speed setpoint.  Und so weiter...

david
David Beierl - dbeierl@ibm.net