Hi Dan,

I'm not a thermodynamics expert and I don't have a Legacy.
However, my thought for my IVP was that if there's plenty of flow, the temp of the air coming out the top cannot be that much (10-20 dF?) hotter than the ambient cabin temperature.
I found that the volume of air moved varies greatly and that how that varies as a function of back pressure also varies from fan to fan.
I ended up with a pair of the  xxx24h701's  in my IVP.  Can't give you an operational report yet. Together I should get 40-50cfm out of them.
http://db.sanyodenki.co.jp/product_db/cooling/dcfan/group_pdf/1247015663.pdf

Colyn



On May 29, 2012, at 1:09 PM, Dan Ballin wrote:

Anyone have experience thoughts on using a fan in the glare shield on
a Legacy to cool the avionics.  I am concerned about pulling air out
towards the canopy and onto the plexiglass, but I believe this would
result in better cooling.  I do have a avionics fan, but it still gets
mighty hot behind the panel.

Thanks
Dan Ballin
N386DM

--
For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html