Insulating the garage would go a long way to help keep the bitter
Vermont cold out, but that's a project for another day. I decided
instead to take advantage of the south-facing side of the garage and
build a solar furnace to collect some of that sunshine just bouncing
straight off my garage. My dad built one years ago and said he recorded a 110-degree
temperature differential between inlet and outlet. And I had enough
scrap materials around the basement to do something similar to what my
dad built.
I started with some 2×4s and plywood to build a simple box. I'm no
carpenter, but I learned that if it's wobbly, just add more nails. I actually built the box to certain dimensions, based on what scrap
materials I had and on the dimensions of my heat collection method -
aluminum cans. That sure was a lot of Sprite. Fifty cans in five
columns of 10 will funnel the air upward.
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