Figure 6
Thermal Chimney
Thermal chimneys can be constructed in a narrow configuration (like a chimney) with an easily heated black metal absorber on the inside behind a glazed front that can reach high temperatures and be insulated from the house. The chimney must terminate above the roof level. A rotating metal scoop at the top which opens opposite the wind will allow heated air to exhaust without being overcome by the prevailing wind.
Thermal chimney effects can be integrated into the house with open stairwells and atria. (This approach can be an aesthetic plus to the home as well.)
3.1.3 Other Ventilation Strategies
Make the outlet openings slightly larger than the inlet openings.
Place the inlets at low to medium heights to provide airflow at occupant levels in the room.