Earth tube ducted through thermal mass concrete wall
OK, here’s the basic idea. I would like to use an earthtube system to bring fresh air into a very tightly sealed home.
I’m also designing the home with a “solar stairwell”, a stairwell that’s exposed to the sun with big windows, with the back wall of the stairwell being made of dark-colored cast concrete.
During cold months, the concrete wall acts as thermal mass, gathering heat during the day and shedding it during the night. Exterior louvered shades above the big windows would keep this wall from getting direct sunlight during the summer.
So, the question is this – would it make sense to duct the earth tube air vertically through the concrete wall? The rationale is that the air moving through the solar-warmed concrete would help distribute that heat through the home.
The fresh air brought in during winter would first be temperature-moderated by the earth, and second, further moderated by the sun-warmed concrete wall before being distributed into the house.
Does this make sense?