Urban Ventilation

This chapter focuses on ventilationVentilation to achieve satisfactory indoor air qualityIndoor air quality and provide thermal comfortThermal comfort in urban buildingsUrban buildings. The impact of urban specific parameters of air and thermal (urban heat islandUrban Heat Island (UHI)) pollution on building ventilation is outlined. Urban external pollutantsPollutants are discussed, and simple equations to calculate their concentrationConcentration indoors are given. The urban heat island is explained and methods to account for this in the design of buildings is outlined. The impact of climate changeClimate change on urban parameters is presented with suggestions on how this can be considered during the design through the use of appropriate weather filesWeather files to include climate change and urban microclimateUrban microclimates modifications. Case studies are presented with measured and simulated performance of urban ventilationUrban ventilation to indicate suitable solutions.