Is there any exemple of a similar solar heat storage that runs
from south to north of a building ceiling (like a duct) ? I
guess one would use a Cansolair-like solar heater to recharge
the "storage duct" during the day and discharge it with a fan
that pushes the hot air throught some louvres at night.
For starters, check out Nathan Hurst's nice Barra system Wikipedia article.
Nick