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Types of ventilation and their uses.
Occupational health and safety symposia. Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHEW (NIOSH) Publication No. 76-136, 1976 Feb; :183-192
Each category of ventilation, natural, dilution, and local exhaust is discussed along with its advantages and disadvantages. The use of natural ventilation is not advised within a building. Dilution or mechanical general ventilation, which utilizes fans to remove contaminated air, requires vast quantities of air to control vapors with low threshold limit values. The most efficient type of ventilation is local exhaust which requires a smaller fan and a smaller volume of air.
Airborne-contaminants; Exhaust-systems; Ventilation-systems; Blowers; Control-equipment
Occupational health and safety symposia
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division