Registered: 1509207680 Posts: 13
Reply with quote #11
I am new to this and have not finished my first collector yet, but it looks like you can get quite a bit of heat from a passive collector. Do a search for "Zen of passive solar" and see what kind of results they got. It's pretty impressive.
Black Hills of South Dakota
Registered: 1352981942 Posts: 2,274
Reply with quote #12
A passive heater can provide a lot of free heat. It's low or no maintenance, and requires no electricity, and is completely silent. But it also has limitations. It needs to be installed vertically and prefers a tall, rather than wide shape for better air movement. It also produces far less heat than an active heater of the same size as much of the heat is lost through the glazing.
Still, I think in many cases a passive heater is the ideal solution. But if you do have a small fan, solar powered perhaps, you will greatly increase the heat captured. Greg in MN