From: Fredmoreno@aol.com
Message-ID: <1496ebf0.249d495f@aol.com>
Date: Sat, 19 Jun 1999 15:28:31 EDT
Subject: Cooling a Walther turbine
To: lancair.list@olsusa.com
Mime-Version: 1.0

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Let me know how much heat you want to dump (is there a figure in the engine 
spec?) and I can give it a crack.  You can't get very much out of the wings 
because of the honeycomb/composite structure and the thick boundary layers 
compared to those in heat exchangers.  You cannot get nearly enough heat to 
de-ice the wings.  That takes lots of heat, more than composites can stand.  
(I examined running coolant from a liquid cooled engine in the leading edges. 
 Forget it.  Too many problems.)  My initial guess is that you are much 
better off with the heat exchanger, but I would be happy to have a look and 
do a few calculations. 

Fred Moreno
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