klink
Well-known member
Passive Solar heat
On sunny days (very few in S.E. Mich.) I have two passive solar heaters that create a little heat. Basically it's a box with no top or bottom. I used shingles for the heat sink, theres a layer on the back panel and a layer in the middle. The middle layer has no backing. The idea is that this layer heats up two air spaces. These two spaces are at different temperatures creating "lift" on the middle layer. This lift moves the air; cold air in from the bottom hot air out the top. On sunny days an hour or two will go by before the furnace kicks on. The south wall of my shop has two 3X3 windows, this is what I use as my glaze panel. I used stuff I already had to make these, I wanted to see if there was any benefit before I spend any money. There are better designs that allow the use of blowers. I just bought a thermometer to track the heat range and there is no sun...
I keep the temperature at 45F when I'm not using the shop, and this past week we had 20F outside, bright sun and my shop was at 55F.
On sunny days (very few in S.E. Mich.) I have two passive solar heaters that create a little heat. Basically it's a box with no top or bottom. I used shingles for the heat sink, theres a layer on the back panel and a layer in the middle. The middle layer has no backing. The idea is that this layer heats up two air spaces. These two spaces are at different temperatures creating "lift" on the middle layer. This lift moves the air; cold air in from the bottom hot air out the top. On sunny days an hour or two will go by before the furnace kicks on. The south wall of my shop has two 3X3 windows, this is what I use as my glaze panel. I used stuff I already had to make these, I wanted to see if there was any benefit before I spend any money. There are better designs that allow the use of blowers. I just bought a thermometer to track the heat range and there is no sun...
I keep the temperature at 45F when I'm not using the shop, and this past week we had 20F outside, bright sun and my shop was at 55F.