Rino;
I’ve heard arguments for both
ways; but one thing is for sure - for a given heat exchanger size, you will get
greater cooling of the oil by installing it on the outlet side of the
radiator. Typically the coolant there may be 20 – 30 degrees cooler
than at the engine outlet. You are also then getting higher temp coolant
to the radiator which allows it to reject more heat.
I had a similar situation, and installed
a small oil/water exchanger between rad outlet and the engine return and it
works great. Oil side is in parallel with the oil/air cooler. Be careful
about running two oil coolers in series – the rotary has high oil flows,
and most off the shelf oil coolers have too much pressure drop.
Al G
-----Original Message-----
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Rino
Sent: Friday, August 14, 2009 5:14
AM
To: Rotary motors in aircraft
Subject: [FlyRotary] oil/water
heat exchanger
I need suggestions on installing an
oil/water heat exchanger.
My oil temp is too high and the
water temp is too low in cruise.
Should I install the exchanger
between the water pump and radiator OR between the radiator out and the engine?
I really do not know which is best.
Renesis powered Glass Goose