passive cooling lecture to second year architecture students

1. Passive Cooling Techniques
in Architecture: Keeping
Your Buildings Cool
Naturally
By: M.Tariq, Architect & Urban Ecologist
Assistant Professor & Erasmus Mundus Scholar
from UK, Finland & Spain

2. What is Passive Cooling?
● Utilizing natural forces, wind, and evaporation to regulate a
building's temperature without mechanical systems.
● Environmentally friendly and cost-effective approach to
thermal comfort.

3. Why Passive Cooling is Important?
● Reducing dependence on energy-intensive air conditioning
systems.
● Lowering greenhouse gas emissions and mitigating climate
change.
● Creating healthier and more comfortable indoor environments

4. positioning
Strategic positioning to
maximize shade and
natural ventilation.
prevailing
Utilizing prevailing
winds for cross-
ventilation.
Site Planning and Orientation:
Buffering
Buffering structures
with trees and
vegetation.

5. Stack Ventilation
● The stack effect is a phenomenon that occurs because of the
natural heat transfer. The warm air has a lower density than
the cold air and rises to the upper part of the building,
chimney, towers.

6. A cooling potential of up to 12 ˚C of indoor air
temperature was identified

8. Evaporative Cooling:
● Roof ponds, fountains, or water curtains to cool incoming air
through evaporation.
● Planting greenery around buildings to increase humidity and
promote evaporative cooling.

9. Fountains or misting installations can lower air
temperatures by an average of 0.7 to 3°C.

10. Traditional Courtyard Houses
● The shading effects of the trees on the ground and on the
south facing the windows of the building.

11. Earthen Architecture
● Mud is a bad conductor of heat. During summer season, the
outside temperature is more than the temperature inside the
mud so we feel cooler in mud house.