Thermal mass interior walls useful or not in passive solar house?
In the house we’re just about to build at times of the year with low sun angle because the south wall is 16ft high and has 120sf of windows & doors the light coming in is sure to strike the back walls.
I’m putting in a concrete thermal mass floor but was thinking of some approaches to add mass into the walls that will get directly lit.
One is to stack bricks in the framing before finishing the walls. haven’t done calculations on their mass yet.
The other is to take 4in diameter pvc pipes and seal them after filling them with water. a 4in pipe holds 5.4lbs per foot so an eight foot tube in a wall yields 43lbs. So every linear foot along a 4in deep 8ft high wall could hold 129lbs. A few feet of wall can add a bit of thermal mass collection capability which can be located between rooms..
Is this an idea with any merit and worth possibly considering as a way to hold and re-radiate passively collected heat?
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