A Simple Interactive Design Tool for Sizing, Locating and determining Pollution Attenuation features, of Urban Air Inlets suitable for Office Buildings

摘要

This paper identifies successful ways of applying natural ventilation to non domestic buildigns lcoated in urban area. Whilst noise and ocntaminant pollution sources are a problem methods of avoiding these emissions are discussed. A review of literature has established that pollution problems arise for buildings which are in close proximity to roads, railways, airports and local industries. Location of ventilation air inlets will affect the quality of indoor air, therefore it is essential that they are located in ways that minimise the ingress of external pollutants. Potential pollution avoidance strategies include, locating vents on sheltered facades and positioning central inlets at a sufficient height from emissions. Wind flows patterns around buildings have an important impact on air quality, and a simple model is discussed that determines the decrease in pollutant concentrations between emission sources and air intakes.