From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] cooling modes
Date: Wed, 25 Nov 2020 05:31:09 +0800
References: <list-975078@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-975078@logan.com>
Message-Id: <63042BBE-032A-4F8C-B3AF-A33E911687F1@gmail.com>

Thanks Jeff. Yes that makes sense now. Sorry, a bit slow at this end.
Steve

> On 24 Nov 2020, at 9:51 pm, Jeff Whaley jwhaley@datacast.com =
<flyrotary@lancaironline.net> wrote:
>=20
> What he was saying - and I believe it was Ernest - was: don't blow air =
onto the front face of your radiator but rather use a blower to draw air =
out the back side of your radiator.  Attach a cardboard box to the =
outlet side of radiator as per attached sketch.  Sounds like a good idea =
to me ...
> Jeff
>=20
> Is that you Roy?
> I couldn't understand your description here. Sorry if I'm being being =
slow.
>=20
> Steve Izett
>=20
>=20
>> On 23 Nov 2020, at 11:15 pm, Ernest Christley echristley@att.net =
<flyrotary@lancaironline.net> wrote:
>>=20
>> Just FYI,  I had a HVAC engineer help me with my installation.  One =
of the things I learned is that blowing "into" a heat exchanger will =
create a host of errors, the most obvious being that the blower tends to =
blow stronger in the middle of the stream than at the extremities. To =
eliminate these errors, put the head of the blower in a box at the rear =
of the heat exchanger.  Cardboard is fine for the box.  Stick the nozzle =
through a hole in the box so that it blows out.  The blower is now =
dropping the pressure in the box.  For good measure, shape the box to =
simulate what the air would encounter leaving the heat exchanger.
>>=20
>=20
> <Air_Out_Blower.jpg>--
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