REFLECTOR: Need for Cabin Heat at Altitude

[Jack Prock]

Several years back there was discussion of how to get warm air into the cabin.

This involved not putting the forward oil heater NACA scoop at all. 

I use a fan (blower or squirrel) to push air from inside the cabin through the forward oil cooler,
and then either push this overboard or route it back to the cabin. 

I currently have this blower:



But this doesn’t push enough air through the cooler. I connected it all up, and I can barely feel 
air movement on the backside of the cooler. My assumption is that this fan does not
handle the back pressure resistance that the oil cooler presents. 

Jack

From: Don Johnston 
Sent: Wednesday, June 26, 2013 5:13 AM
To: Velocity Aircraft Owners and Builders list 
Subject: Re: REFLECTOR: Need for Cabin Heat at Altitude

Not sure who this was directed to, but in my case...

I have a panel that extends from the forward edge of the canard to the top of the fuselage (just forward of the doghouse). There is a 3" opening in the panel. The bilge blower attaches to the opening in the panel and SCAT tubing runs to the nose NACA just aft of the damper which shuts off the outside air.  When the the blower is running, air is pulled from the cabin (behind the instrument panel), through the blower, through the oil cooler (now it's really an air heater) and back into the cabin (the damper for oil cooler exit duct out the bottom would be closed) through the two 1.5" ducts that exit on the floor between the rudder pedals. 

I have no mechanism to move that air to the aft part of the cabin (at this time). 

The heat level can be controlled by adjusting the speed of the fan or by varying the position of the inlet and exhaust dampers. 

But (for me) this is all theoretical since I'm not flying yet. 

-Don


On Wed, Jun 26, 2013 at 6:58 AM, victor delta <vdelta at pacbell.net> wrote:

  RE: Response from Kurt

  Fully understand about the use of blower motor (I assume it is used to move the air throughout the cabin) but what about the overall system?
  Where is the hot air picked picked up and how?
  Is the volume of (hot) air entering the cabin regulated in any way?
  What about controlling the heat level?  Any mixing capability of the hot air and cold air?
  How does the hot air reach the rear seats?  Is it (your system) effective that far back.....or?
  Appreciate more info on what you have put together in terms of the nuts and bolts.
  Thanks in advance for any info passed along.
  VD
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