REFLECTOR:Heating

Rene Dugas reflector@tvbf.org
Thu, 23 Oct 2003 18:32:51 -0500


Just FYI.
I cold weather Air from the oil cooler is warm not hot.  My oil temp has
never been over 185 degrees so differential temp from 72 degrees of
comfort to incoming "hot" air is only 123 degrees.  Not much to work
with.  Air leaks around the canard may generate as much cold air at 0
degrees.  I use the factory system with two floor vents and a dash
windshield vent and wear a coat.  A system to bring heated air from an
exhaust muff would be great at leaned CHT's of 410 or EGT's of 1450
would give us a lot more to work with.
Rene'

-----Original Message-----
From: reflector-admin@tvbf.org [mailto:reflector-admin@tvbf.org] On
Behalf Of Brett Ferrell
Sent: Thursday, October 23, 2003 8:34 AM
To: reflector@tvbf.org
Subject: Re: REFLECTOR:Heating

John,

You could probably do that, the issue is how do you get get the ducting
all
set up?  I wasn't clear if you wanted to maintain the "stock"
NACA-cooler-Dump system, but assuming you do there's not a lot of room
to
bring in the bilge air and a selection flapper into the NACA, and then
you
have the same issue coming out, I think you'd want a flapper to select
to
dump overboard or send air to the oil line conduit.  However if someone
comes up with a clever way to do that, it would be nice for guys with
the
RGs.

The factory system is nice and simple, and the ducting quickly gets
complicated anyway you go if you want finer temperature control.  I
really
hate the way the Cessna heaters work, where you get either 400 degree
air or
NONE, which is why I went with the mixer.  But that causes me to have a
T in
the fresh air line (cool air to the mixing valve and up to another T to
feed
the 2 panel-mounted eyeball vents), then I have a T in the hot air line
to
the mixer (one from the standard naca system, one from the recirc fan
system).  I think I'll really like the functionality of the system, but
it
does look a bit rat's-nesty in there....

Brett

----- Original Message ----- 
From: "John Dibble" <aminetech@dixie-net.com>
To: <reflector@tvbf.org>
Sent: Thursday, October 23, 2003 10:07 AM
Subject: Re: REFLECTOR:Heating


> I like the bilge fan idea.  It can double as additional (better)
cooling
during taxi on hot days.  Would it be possible to eliminate the second
oil
cooler by running the bilge air through the oil line duct with an outlet
vent near the back of the cabin?  On warm days my rear pilot side
passengers
feel heat from
> the duct as is.
>
> John
>
> Brett Ferrell wrote:
>
> > Craig,
> >
> > I'm going a similar route, installing seat heaters and a mixer valve
to
get the air temperature I want, but am not have 2 zones.  I was
wondering,
did you use the mixer from Spruce or make your own?
> >
> > Also, after feedback from a flying Velocity, I'm installing a bilge
fan
so I can heat (through a second oil cooler) recirculated cabin air
instead
of bringing (potentially subzero) outside air in.  And since I've got an
FG,
I'm going to use the keel as a heating duct for the backseats to get
some
hot air.....
> >
> > Brett
>
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