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Winter Mode

During winter mode, in CLOSED SYSTEM, the clerestory is kept isolated from the house interior, so that the air heated by the selective façade with solar blinds (and solarium, not shown here) is guided by the building envelope to the shadowed area in the house interior, where the sub-ceiling  exchange surface enhances functionality, and from there to the over-floor channel, which completes the heating cycle by solar harvesting.

OBS: Roof thermal insulation is critical to minimize heat losses from the warm air in the house interior, and can be complemented by spatial subdivision. In colder climates, the rock sub-corridors can be used for heat storage by day and house interior heating by night.

For long periods without sunlight, phytomass complements (ecological fireplace with adressable convection and woodstove in water heating) can be employed.