Passive Cooling The term “passive” implies that energy-consuming mechanical components like pumps and fans are not used.
Passive cooling in building design attempts to integrate principles of physics “Thermodynamics & Aerodynamics” into the building s – network of – voids:
a. Slow heat transfer into a building. This involves an understanding of the mechanisms of heat transfer: heat conduction, convective heat transfer, and thermal radiation (primarily from the sun).
b. Remove unwanted heat from a building. In mild climates with cool dry nights this can be done with natural means of ventilation. In hot humid climates with uncomfortable warm / humid nights, ventilation is essential therefore, improvised Passive Cooling completed with some mechanical ventilation appears to be a win-win situation for user and the owner.
c. Introduction of fresh air by means of active and passive methods is essential to create a healthy atmosphere in wards and public areas and to avoid cross contamination in healthcare facilities.
d. Passive cooling is essential to avoid “Sick Building Syndrome” in healthcare facilities. This is a topic which we are engaged in designing and research.