Climate and Built Environment Air Movement

1. AIR MOVEMENT
PROF. VIJESH KUMAR V,
Asst. Professor
Mc GAN’s School of Architecture

2. The Wind
• What?
• How?
• Why?

6. Why we require Ventilation?
• Removal of bad odours
• Fresh air
• Heating / Cooling

8. TURBULANCE
Roughness creates mechanical turbulence, while surface
heating causes thermal turbulence in the airflow.

28. Air movement through the building is
due to;
• Wind Pressure
• Stack effect
• Combustion and Ventilation

35. Pairing a large outlet with a small inlet increases incoming wind speed.

36. Building structures can redirect prevailing winds to cross-ventilation

39. Venturi Effect

42. Stack Effect / Chimney Effect

45. Solar Chimney

48. FANS…

49. Why Fan?

51. COURTYARD…