We have something similar in the southwest called Earth Ships. These homes are made of soil compacted used tires and a stone/mortar mix or sometimes aluminum cans and mortar. In the summer a large south facing angled window runs the length of the house doesn’t see the sun all summer and in the winter, the sun’s angle changes to allow all the light/heat in. We got way more than an 8° difference, 100% passive, at 130F° outside… and if you know anything about the Sonoran Desert, you know the nights can be deadly cold. You can actually go hyperthermic when the temps drop to 100F° immediately as the sun sets. Earth Ships stay stable all year long.
We have something similar in the southwest called Earth Ships. These homes are made of soil compacted used tires and a stone/mortar mix or sometimes aluminum cans and mortar. In the summer a large south facing angled window runs the length of the house doesn’t see the sun all summer and in the winter, the sun’s angle changes to allow all the light/heat in. We got way more than an 8° difference, 100% passive, at 130F° outside… and if you know anything about the Sonoran Desert, you know the nights can be deadly cold. You can actually go hyperthermic when the temps drop to 100F° immediately as the sun sets. Earth Ships stay stable all year long.