|Here are some quick pics of my
heater... note the temp rise. I believe it is a 100 cfm fan, but I can't seem to
remember the conversion factor with temp rise/cfm=watt to find the output. Today
I looked at the temp rise and it went from input of 40degrees F to 135 degrees
F. Pretty amazing for a sub $200 heater.
Old sliding glass doors are amazingly cheap at used building material stores (and are often older non-low e for better solar transmission). In fact I used one from a brand new low e door (other side was cracked so I got it for $25) to make a great window for my walk out basement.
Anyway, enjoy the snow and stay warm! Happy New Year!
I'll just note here that I think that
collectors that use 2 or 3 layers of screen for the absorber are nearly as easy
to build, and will be more efficient and
produce more heat... Tim's design could be easily adapted to use the