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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-2840205@logan.com>
Subject: Re: [FlyRotary] Re: spray bars
Date: Sat, 6 Dec 2003 14:33:36 -0500
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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 -----=20
  From: Bill Eslick=20
  To: Rotary motors in aircraft=20
  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-------

        From: Rotary motors in aircraft
        Date: Saturday, December 06, 2003 09:12:19 AM
        To: Rotary motors in aircraft
        Subject: [FlyRotary] Re: spray bars

        > > ...snip... You would also need to figure out an adequate =
spray pattern,=20
        build/buy
        the nozzles, water pump, water container, etc. < <=20

        I'd get one of those misting thingies they sell in the plant =
departments of=20
        the building supply stores, mount the business end in the duct =
well upstream=20
        from the rad. They put out a fog as opposed to a spray and as a =
result will=20
        cool both the air and the fins at the same time. I'm sure =
figuring out a=20
        little pump would be a piece of cake, just use a windshield =
washer system from=20
        the boneyard. The mister will actually keep the water =
consumption down... I=20
        know that it takes a fixed amount of water evaporating to =
provide a given=20
        amount of cooling, but I think that with both the air and the =
fins being=20
        cooled that kind of thing would provide a double whammy (as =
opposed to a blood=20
        of water from a sprayer). Just some random thoughts from someone =
who hasn't=20
        had anywhere near enough sleep in the last 24 hours <G>

        <marv>
      =20
              =20
      =20
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<DIV><FONT color=3D#000000 size=3D2>That is interesting, Bill.&nbsp; I =
know that=20
Tracy Crook has used a spray bar (not a mister - don't know if that =
would make=20
any difference) and found it very effective in reducing coolant =
temps.&nbsp;=20
Perhaps we can ask him what temp difference he was seeing.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 size=3D2>Ed</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT size=3D2>Ed Anderson<BR>RV-6A N494BW Rotary =
Powered<BR>Matthews,=20
NC<BR><A=20
href=3D"mailto:eanderson@carolina.rr.com">eanderson@carolina.rr.com</A></=
FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Dn268bl@charter.net href=3D"mailto:n268bl@charter.net">Bill =
Eslick</A>=20
  </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dflyrotary@lancaironline.net=20
  href=3D"mailto:flyrotary@lancaironline.net">Rotary motors in =
aircraft</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, December 06, =
2003 2:10=20
  PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [FlyRotary] Re: spray =
bars</DIV>
  <DIV><BR></DIV>
  <TABLE id=3DINCREDIMAINTABLE cellSpacing=3D0 cellPadding=3D2 =
width=3D"100%"=20
    border=3D0><TBODY>
    <TR>
      <TD id=3DINCREDITEXTREGION=20
      style=3D"FONT-SIZE: 12pt; CURSOR: auto; FONT-FAMILY: Arial" =
vAlign=3Dtop=20
      width=3D"100%">
        <DIV>&nbsp;FWIW...........&nbsp; I installed a "mister" nozzle =
ahead of=20
        one of my evaporator cores.&nbsp; I have temperature sensors =
(cht=20
        probes) at the exit of each radiator, so I can read differences =
in delta=20
        T between the two.</DIV>
        <DIV>&nbsp;</DIV>
        <DIV>I used a 30 psi pump from a motor home water system.&nbsp; =
On the=20
        hottest of days (all summer in Texas), the most benefit I ever =
saw was 1=20
        to 2 degrees.&nbsp; I'm sure this could be improved with more =
nozzles,=20
        better placement, etc., but I had much more success with =
modifying the=20
        cowl flap.</DIV>
        <DIV>&nbsp;</DIV>
        <DIV>Bill Eslick</DIV>
        <DIV>&nbsp;</DIV>
        <DIV id=3DIncrediOriginalMessage><I>-------Original=20
        Message-------</I></DIV>
        <DIV>&nbsp;</DIV>
        <DIV id=3Dreceivestrings>
        <DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>From:</B></I> <A=20
        href=3D"mailto:flyrotary@lancaironline.net">Rotary motors in=20
        aircraft</A></DIV>
        <DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Date:</B></I> =
Saturday,=20
        December 06, 2003 09:12:19 AM</DIV>
        <DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>To:</B></I> <A=20
        href=3D"mailto:flyrotary@lancaironline.net">Rotary motors in=20
        aircraft</A></DIV>
        <DIV dir=3Dltr style=3D"FONT-SIZE: 11pt" <i><B>Subject:</B></I> =
[FlyRotary]=20
        Re: spray bars</DIV></DIV>
        <DIV>&nbsp;</DIV>&gt; &gt; ...snip... You would also need to =
figure out=20
        an adequate spray pattern, <BR>build/buy<BR>the nozzles, water =
pump,=20
        water container, etc. &lt; &lt; <BR><BR>I'd get one of those =
misting=20
        thingies they sell in the plant departments of <BR>the building =
supply=20
        stores, mount the business end in the duct well upstream =
<BR>from the=20
        rad. They put out a fog as opposed to a spray and as a result =
will=20
        <BR>cool both the air and the fins at the same time. I'm sure =
figuring=20
        out a <BR>little pump would be a piece of cake, just use a =
windshield=20
        washer system from <BR>the boneyard. The mister will actually =
keep the=20
        water consumption down... I <BR>know that it takes a fixed =
amount of=20
        water evaporating to provide a given <BR>amount of cooling, but =
I think=20
        that with both the air and the fins being <BR>cooled that kind =
of thing=20
        would provide a double whammy (as opposed to a blood <BR>of =
water from a=20
        sprayer). Just some random thoughts from someone who hasn't =
<BR>had=20
        anywhere near enough sleep in the last 24 hours=20
        &lt;G&gt;<BR><BR>&lt;marv&gt;<BR></TD></TR>
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