Urban Heat Island and Passive Cooling

The concentration of the population on the big cities made it necessary to follow it with a large number of high buildings, civil, industrial and mobile elements such as cars, public transport and other features. This has contributed on creating higher temperatures inside the city then on opened country. This phenomenon is called The Urban Heat Island. Increasing the temperatures from UHIs, can influence the community environment and quality of life. UHIs increase generally electricity demand, as well as peak demand. The increase of energy demand requires the capital investments in generating capacities. Increasing the energy production also amplifies the sum of pollution emitted on the air. The advanced pollution on the air, combined with greater temperatures activates makes it worse the range of medical difficulties and increases the health risk. From this viewpoint the questions that arise are: What strategies can we apply to reduce overheating on the cities during the summer days? How can we reach human comfort and decrease energy consumption on the buildings? Therefore, this paper highlights some of the strategies involving the wind to improve microclimate near the building, reduce the energy consumption, and increase the physical comfort and quality of life.