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Association of ventilation rates and CO2 concentrations with health and other responses in commercial and institutional buildings.

Authors
Seppanen-OA; Fisk-WJ; Mendell-MJ
Source
Indoor Air 1999 Dec; 9(4):226-252
NIOSHTIC No.
20032675
Abstract
This paper reviews current literature on the associations of ventilation rates and carbon dioxide concentrations in nonresidential and non-industrial buildings (primarily offices) with health and other human outcomes. Twenty studies, with close to 30,000 subjects, investigated the association of ventilation rates with human responses, and 21 studies, with over 30,000 subjects, investigated the association of carbon dioxide concentration with these responses. Almost all studies found that ventilation rates below 10 Ls(-1) per person in all building types were associated with statistically significant worsening in one or more health or perceived air quality outcomes. Some studies determined that increases in ventilation rates above 10 Ls(-1) per person, up to approximately 20 Ls(-1) per person, were associated with further significant decreases in the prevalence of sick building syndrome (SBS) symptoms or with further significant improvements in perceived air quality. The carbon dioxide studies support these findings. About half of the carbon dioxide studies suggest that the risk of sick building syndrome symptoms continued to decrease significantly with decreasing carbon dioxide concentrations below 800 ppm. The ventilation studies reported relative risks of 1.5-2 for respiratory illnesses and 1.1-6 for sick building syndrome symptoms for low compared to high low ventilation rates.
Keywords
Ventilation; Ventilation-equipment; Ventilation-systems; Inhalation-studies; Gases; Gas-adsorption; Respiratory-hypersensitivity; Respiration; Respiratory-system-disorders; Air-monitoring; Air-quality; Air-quality-control; Air-quality-measurement; Air-samples; Air-sampling-techniques
Contact
WJ Fisk, Lawrence Berkeley National Laboratory, Indoor Environment Department, Environment Energy and Technology Division, Berkeley, CA 94720
CODEN
INAIE5
CAS No.
124-38-9
Publication Date
19991201
Document Type
Journal Article
Fiscal Year
2000
NTIS Accession No.
NTIS Price
Issue of Publication
4
ISSN
0905-6947
NIOSH Division
DSHEFS
Source Name
Indoor Air
State
OH; CA
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