Identifying and managing indoor-air problems

Abstract

At first glimpse, the answer to this question may appear straightforward: we are equipped nowadays with state of the art instrumentation capable of detecting concentrations of pollutants at levels far below those which are considered to be health hazard. There are also sophisticated, computer controlled "smart" building systems, which enable various parameters within large, multi-zone buildings to be set and maintained at the required levels, as well as controlling other variables relating to the operation of the building in response to the outdoor climate. In addition, we are capable of designing buildings in a way which should prevent the development of indoor air problems in the first place. However, despite all of these factors, the frequency of headlines in the media, relating to severe consequences of indoor air and indoor environment problems, indicates that there is still a long way to go in identifying and managing indoor air quality (IAQ) deficiencies. This paper explores and illustrates the causes behind IAQ problems, particularly in situations when measurements do not identify any problems and everything has been done properly and appears to be working correctly. Based on these illustrations, conclusions are discussed as to the options for ensuring good air quality in complex and ever changing indoor environments.