Mailing List flyrotary@lancaironline.net Message #28546
From: Monty Roberts <montyr2157@alltel.net>
Subject: Heat Exchangers
Date: Sun, 18 Dec 2005 16:47:49 -0600
To: <flyrotary@lancaironline.net>
I read through all the archives on evaporator cores and radiators.
 
I have a few questions for Ed in particular and anybody else who has any answers or recommendations.
 
I am going to use radiators mounted in the wing behind the spar like a ME109. There will be variable inlets and exits.
 
I have a Ford evaporator core that is 4 inches thick. The actual core minus the tanks is 8X9 in. So the core volume is 288 in^3. I will use two of these in each wing.
 
The reason I am interested in this core is I can use two Fluidyne or Earl's coolers stacked back to back to form a 4 in thick oil cooler that is the exact same core size as the evap core. There would be two oil coolers that measure 4X9 in by 4in thick. The hot oil is plumbed into the rear 2in cooler and then goes into the front 2in cooler. 
 
The evap core and the stacked oil coolers form a nice cooling block that is 12X12.25X4. All of the plumbing points in the right direction. This is a fast airplane and will cruise in the 250 mph range, I am not opposed to putting spray bars in front of the coolers for the occasional very hot day climb. The coolers are aligned with the outer portion of the prop arc under the wing so they will be in a fairly high velocity air stream on the ground.
 
Do you guys think that this will be adequate cooling for a Pport 13b?
 
Any big problems with the Ford Evaporator cores VS GM? They look to be the same except for the thickness and dimensions just happen to coincide with the oil coolers.
 
Here are the evap cores 2 req:
 
 
Here are the oil coolers DB-30110 4 required:
 
 
Monty
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