Engine Room

A window seat faces the garden and the Tararua mountains beyond

The roof is shaped to maximise northern exposure whilst minimising the shadow cast on the remainder of the house

Ceiling junction, Engine Room

Air duct & Solar collector inner wall, Engine Room

Ventilation door with stay, Engine Room

Aluminium frame, Engine Room

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Hold-open latch, Engine Room

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thermal storage diagram showing airflow
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Airflow on a cold sunny morning

  • 1 The high-level solar collector is replenished with cool air from the thermal storage area below. Warmed air returns to the living area via a high level slot in the internal curatin wall
  • 2 A house fan transfers warm air from the living area throughout the house, returning as cooler air via the corridor
  • 3 Drawn by the solar collector (& back-pressure from the house), cooler air moves through (and is stored by) the thermal storage area