Indoor Air Quality
نویسنده
چکیده
The issues of indoor air quality are complex and can be directly influenced by a number of system and building parameters. There are no universal solutions for every problem since there are numerous potential contaminant sources. They may originate from indoors and have a direct impact on indoor environmental quality, or they may originate from outdoors and be transferred by a mechanical or natural ventilation system or even by infiltration, into the building. The most common indoor contaminants are the Volatile Organic Compounds (VOCs), microbiological contaminants, and various gases or chemicals originating from human activity and equipment. Outdoor dust, pollen, and gases can also enter into the building. Poorly implemented energy conservation strategies and sealing of buildings have progressively caused serious indoor air quality (IAQ) problems that have become known as the sick building syndrome. Occupant health complaints and illnesses have been monitored in different use buildings around the world. The increased awareness of IAQ issues has led to a large number of IAQ improvements in various building practices, from eliminating the use of building materials like asbestos to the design, operation, and maintenance practices of ventilation systems. However, addressing and dealing with IAQ problems must be a continuous effort. Ventilation systems when properly designed, installed, operated, and maintained can secure proper IAQ conditions at acceptable energy consumption. Existing ventilation standards set the grounds for properly handling these complex issues.
منابع مشابه
An Assessment of Indoor Air Quality and Thermal Comfort in Educational Spaces (Case Study: Girls' High Schools in Arak, Iran)
As students spend one-third of their time at school, their health, comfort, and productivity are mostly influenced by thermal condition and indoor air quality of classrooms. Regarding that manual window-opening is a common way for providing fresh air in classes and students aren't allowed to change their uniform, position or control the windows during the lesson hours, providing thermal comf...
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