[Greenbuilding] Question about a window solar heater

Bob Waldrop bwaldrop at cox.net
Thu Dec 1 09:04:07 PST 2011

I recently came across this interesting take on the traditional solar window heater.
In discussing this elsewhere, however, someone mentioned that since it hangs on the inside of a window, it blocks sunlight from the window. That person thought that the heat resulting 
from the flow of sunlight into a room without any obstruction in the window would be greater than the heat resulting from the operation of this device in a window, which would have the incidental effect of blocking some sunlight from the room.
Is that correct? 
Bob Waldrop
Oklahoma City
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