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Ventilation, Energy and IAQ Impacts of Mechanical Ventilation in a U.S. Dwelling.


pdf icon Ventilation, Energy and IAQ Impacts of Mechanical Ventilation in a U.S. Dwelling. (524 K)
Persily, A. K.

ISIAQ: Indoor Air 99 Conference. Volume 2. Proceedings. August 8-13, 1999, Edinburgh, Scotland, 350-355 pp, 1999.

Keywords:

ventilation; residential buildings; simulation; occupants; contaminants

Abstract:

Based on concerns about indoor air quality and trends towards tighter envelope construction, there has been increasing interest in mechanical ventilation of residential buildings in the United States. This paper reports on a simulation study of indoor air quality, ventilation and energy impacts of several mechanical ventilation approaches in a single-family residential building. the study focuses on a two-story house in the northwestern United States and employs the multizone airflow and contaminant dispersal model CONTAM96. The contaminants studied include carbon monoxide, carbon dioxide, nitrogen dioxide, water vapor, finne particles and a generic volatile organic compound. One-year simulations were performed for a base case of envelope infiltration, passive inlet vents with intermittent mechanical exhaust, outdoor intake to the forced-air system return balanced by mechanical exhaust, and continuous exhaust. Results discussed include whole building air change rates, energy consumption and contaminant concentrations.