Re:The Zen of Passive Solar Heating Panel Design (2010)
by imaginenore on Sunday September 18, 2016 @06:04PM
(#12527433)
Yeah, I'm fully aware of that design. I've seen tests of it against a much simple design with the sheet of fabric in the middle, and there's basically no difference. Cutting so many cans' tops and bottoms is actually not an easy task, I had tried.
Re:The Zen of Passive Solar Heating Panel Design (2010)
by redtexture on Tuesday September 20, 2016 @09:24PM
(#12544771)
A couple of pieces of plywood, for each window, and some foam strips for air-flow sealing would do. This is not a big effort, just more than your (exceedingly short-lived) cardboard design contemplates.
The gain in creature-comfort in the apartment, might be more than the money saved in avoided heating, as a renter of the apartment.
They also tend to install it on the side wall; it doesn't get that much sunshine in the summer, but it becomes more efficient in the winter when the Sun stays at lower angles. External circulation of air is still required and is usually done by using an electric fan.