Mailing List flyrotary@lancaironline.net Message #4656
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: spray bars
Date: Sat, 6 Dec 2003 14:33:36 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
That is interesting, Bill.  I know that Tracy Crook has used a spray bar (not a mister - don't know if that would make any difference) and found it very effective in reducing coolant temps.  Perhaps we can ask him what temp difference he was seeing.
 
Ed
 
 
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
----- Original Message -----
Sent: Saturday, December 06, 2003 2:10 PM
Subject: [FlyRotary] Re: spray bars

 FWIW...........  I installed a "mister" nozzle ahead of one of my evaporator cores.  I have temperature sensors (cht probes) at the exit of each radiator, so I can read differences in delta T between the two.
 
I used a 30 psi pump from a motor home water system.  On the hottest of days (all summer in Texas), the most benefit I ever saw was 1 to 2 degrees.  I'm sure this could be improved with more nozzles, better placement, etc., but I had much more success with modifying the cowl flap.
 
Bill Eslick
 
-------Original Message-------
 
Date: Saturday, December 06, 2003 09:12:19 AM
Subject: [FlyRotary] Re: spray bars
 
> > ...snip... You would also need to figure out an adequate spray pattern,
build/buy
the nozzles, water pump, water container, etc. < <

I'd get one of those misting thingies they sell in the plant departments of
the building supply stores, mount the business end in the duct well upstream
from the rad. They put out a fog as opposed to a spray and as a result will
cool both the air and the fins at the same time. I'm sure figuring out a
little pump would be a piece of cake, just use a windshield washer system from
the boneyard. The mister will actually keep the water consumption down... I
know that it takes a fixed amount of water evaporating to provide a given
amount of cooling, but I think that with both the air and the fins being
cooled that kind of thing would provide a double whammy (as opposed to a blood
of water from a sprayer). Just some random thoughts from someone who hasn't
had anywhere near enough sleep in the last 24 hours <G>

<marv>
____________________________________________________
  IncrediMail - Email has finally evolved - Click Here
Image
IMSTP.gif
Image
BackGrnd.jpg
Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster