Buly,
You are correct that parallel coolers will be more efficient, IF the liquid flow through the coolers are the same.
Bill Schertz

-------------- Original message --------------
From: Bulent Aliev <atlasyts@bellsouth.net>

> I believe parallel coolers will be more efficient due to the higher
> delta T. In a serial set up, the liquid in the second cooler will be
> lower temp. and less efficient heat transfer will take place. Just an
> opinion of an eyeball engineer?
> Buly
> On May 5, 2006, at 11:34 PM, Kelly Troyer wrote:
>
> > Bob,
> > One other comment........There is some difference of opinion
> > among the group
> > whether connecting coolers (oil or coolent) in series (as you
> > propose) or in
> > parallel is the most efficient method.........We have group members
> > currently
> > flying with both methods........Most that I am aware of that use
> > both methods
&g t; > are for coolent systems as not many are using two oil
> > coolers........I personally
> > lean toward a parallel coolent system........Any comments from
> > others in the
> > group about this question would be welcome as I know we have
> > several with
> > experience or training in this area !! What would be most efficient
> > for one
> > system should probably apply to the other.......IMHO
> > --
> > Kelly Troyer
> > Dyke Delta/13B/RD1C/EC2
> >
> >
> >
> >
> > -------------- Original message from kenpowell@comcast.net:
> > --------------
> >
> > Bob,
> > I think you should have made the lines larger to help lower presure
> > drop in the long lines. I understand that the extra oil in the
> > lines will be heavy but the pressure drop would be a tradeoff that
> > I wouldn't want to make.
> >
> > Ken Powell
> > Bryant, Arkansas
> > 501-847-4721
> > C150 / RV-4 under construction
> >
> > -------------- Original message --------------
> > From: BMears9413@aol.com
> > I'm running two oil coolers in the Spitfire. Due to the lengthe of
> > the lines and volume of the two coolers I reduced my oil lines to
> > AN8 (I think stock they were 10?) Now, before I close everything up
> > I'm having second guessing. My total line length will be around
> > 12'. I had planned on running the lines to one oil cooler, then the
> > other, then back to the motor.
> > Any comments?
> >
> > Bob Mears
>
> Buly
> http://tinyurl.com/dcy36
>
>
>
>
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