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From: "William" <wschertz@ispwest.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-607644@logan.com>
Subject: Re: [FlyRotary] Re: water cooled matrix in oil pan
Date: Sat, 15 Jan 2005 20:14:16 -0600
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Although flow is conserved, a high velocity through oil cooler tubes works 
better with oil than a low velocity through the oil pan.
Bill Schertz
KIS Cruiser # 4045
----- Original Message ----- 
From: "Wynn, Mike" <mike.wynn@spectra-physics.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, January 14, 2005 4:24 PM
Subject: [FlyRotary] Re: water cooled matrix in oil pan


>
> `The problem with this is that the oil is essentially stagnant in the pan'
>
> Al, this is only 'cause you haven't looked inside when its running - 
> there's
> an oil pump driving this stuff round the engine all the time, it just 
> starts
> and finishes at the bottom of the oil pan.  The flow rate will be the same
> as anywhere else on the system that you would choose to oil/air cooler. 
> Its
> true that the `dwell time' in the oil pan will be longer as this is your
> reservoir but this is a good thing.
>
> One can discuss the merits of a (hot) water to (hotter) oil heat 
> exchanger,
> but that's a different question and one where I have no experience.  They
> are used on cars a lot but I don't know about their efficiency for
> continuous high power operation.
>
>
> Mike
> Nice moose Kevin
>
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