I've been thinking about getting two CPU cooling fans that have the heat sink at a distance from the fan and use a heat pipe to move the heat over to the fan an

I've been thinking about getting two CPU cooling fans that have the heat sink at a distance from the fan and use a heat pipe to move the heat over to the fan and connecting them back-to-back so one fan blows outward and one blows inward. Something like two of these: http://i.ebayimg.com/images/i/151452729196-0-1/s-l1000.jpg http://i.ebayimg.com/images/i/151452729196-0-1/s-l1000.jpg https://prod.scorptec.com.au/10/299/65429/121859_large.jpg https://prod.scorptec.com.au/10/299/65429/121859_large.jpg https://brain-images-ssl.cdn.dixons.com/7/2/10178327/l_10178327_004.jpg https://brain-images-ssl.cdn.dixons.com/7/2/10178327/l_10178... That way outgoing air would warm (or cool) the incoming air. If a Hepa filter could be added to the incoming air fan it would make an ideal unit to put in the window at fairly low cost. Since they are CPU coolers they could probably be made speed adjustable also.