You might want to check what happens to the viscosity of this fluid at
lower temperatures. Its been a while, but as I recall this fluid
turns into heavy syrup at lower temps. You can visualize your water pump
churning (cavitating) in a void of this fluid at low temperatures while
not moving any through your cooling system.
The fluid next to the rotors would undoubtedly get hot -while that in
the radiator and water pump may act as a (Temporary) plug to coolant flow –
until the heated fluid explosively forces the issue.
I tried finding the viscosity charts they used to have on the site, but
could not find it.
My impression when I looked into this fluid back a few years ago, was that
this heavy viscosity at low temps was probably not much of a draw back
compared to the benefits in a racing motor – heated garage, summer temps,
etc. But, might be a different story for aircraft application.
Ed
Edward L.
Anderson
Anderson Electronic Enterprises LLC
305 Reefton
Road
Weddington, NC
28104
http://www.andersonee.com
http://www.eicommander.com
Sent: Thursday, October 10, 2013 1:05 PM
Subject: [FlyRotary] Re: waterless coolant?
This
appears interesting. I looked at the website and was unable to find the
heat capacity of the fluid. The higher boiling temp may not be helpful if
the heat capacity is such that you need a large delta T to transfer the same
amount of heat as a water-based system.
One
must also consider the effect of the higher operating temperature on engine
oils. At some temperature, oil loses its lubrication ability. I
don’t know what that temp is but assume it is different for different
oils. Just because the coolant allows higher operating temperatures,
doesn’t mean one should do that.
Gordon
C. Alling, Jr., PE
President
acumen
Engineering/Analysis,
Inc.
540-786-2200
www.acumen-ea.com
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Michael
Silvius
Sent: Thursday, October 10, 2013 1:19 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] waterless
coolant?
While on the subject of
cooling, I am curious if anyone has tried the waterless coolant? Seems to offer
some advantages, namely higher boiling boint and low pressure, is there any
reason it should not be used in our aplication?
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