J Hillman wrote:.......I expect it will get uncomfortably warm in there any time the sun shines. So eventually I want to bury drain tile in the floor then blow the air from the solar collector though the tile to heat up the floor so the floor acts as a thermal mass. In the summer the panels would be shaded by the roof overhang and possibly be covered with shade cloth.
I don't expect to keep it 60 degrees all winter but I do hope that by the time I get home from work in the afternoon the shop will be heated up and will continue to stay warm for several hours after dark. I would consider it a major success if I can keep the workshop above freezing ALL winter.
I have done a lot of experimenting with solar heat and I think my idea will work.
John Weiland wrote:
I really like this vision, JH! I've been thinking of doing a similar thing on a smaller scale on the south side of an outbuilding that currently is uninsulated, but I would be curious about heating up a heat sink by day to be released into the outbuilding later in the day. Your idea of letting the sun charge up your thermal bank and then release it into your shop in the early evening sounds like a very doable scenario. With the deep frost that we get here (~5 feet), I'm also thinking of how best to protect the 'banked' heat with below-ground insulation, noting that insulation placed horizontally from the foundation of the heat collector might work as well as the same amount of insulation placed vertically. See https://framebuildingnews.com/below-grade-insulation-part-1/
Thanks and good luck with your build!