Happy New Year !

I look forward to 2013. I have several passive window box designs and prototypes in the works.

I am reducing the current 4 solar fans down to two more powerful units.

Stay Tuned

Dave

Happy Holidays

Happy Holidays

Lets hope for a great 2013 Solar Year!

Dave

Solar Passive Window Box Heater Design change

I have been using a 4 solar fans to push the warm air back into the room.

I now think, using two solar fans will do the same job.

I currently have 4 opening, which may decrease the heat build up.
Redcing the top four openings to 2- could get my inside box heat to higher then the current 96f.

I plan to incorporate these changes over the weekend

Dave

Design Change to the Passive Solar Window Box Heater

I have been using a 4 solar fans to push the warm air back into the room.

I now think, using two solar fans will do the same job.

I currently have 4 openings, which may decrease the heat build up.
Reducing the top four openings to 2, could get my inside box heat to higher then the current 96f.

I plan to incorporate these changes over the weekend

Dave