http://en.wikipedia.org/wiki/Thermal_comfort
http://faculty.arch.utah.edu/young/TEACHING/ARCH4350F09/RR3_BioclimaticChart.pdf
Stack Effect: Stack effect is the movement of air into and out of buildings, chimneys, flue gas stacks, or other containers, and is driven by buoyancy. Buoyancy occurs due to a difference in indoor-to-outdoor air density resulting from temperature and moisture differences. The result is either a positive or negative buoyancy force. The greater the thermal difference and the height of the structure, the greater the buoyancy force, and thus the stack effect. The stack effect is also referred to as the "chimney effect", and it helps drive natural ventilation, infiltration and fires.
http://faculty.arch.utah.edu/young/TEACHING/ARCH4350F09/RR3_BioclimaticChart.pdf
Venturi Effect: It is essentially about looking at design in volumes i.e. when you force a wind to move into a narrow opening and expand into a larger volume, the effect can be quite incredible. This design strategy creates what is referred to as wind tunnels and keeps the living spaces cool and airy." In fact this idea always works irrespective of the predominant wind direction"
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