Microclimate and air change rates. Microklimat och luftvaxling.

Discusses the importance of local wind and temperature conditions and their effect on the air change rate between a building and its environment. Provides a descriptive model of air change rates and a building's microclimate. Describes methods which illustrate average wind velocity and effect of height and characterises wind spectra and turbulence intensity caused by velocity fluctuations. Discusses mechanisms which affect air change rates and climate comfort and gives an analysis of a simple model for random air leakage. Lists important and urgent research requirements.