This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Marsik, T. Articles by Johnson, R. Search for Related Content Social Bookmarking                   What's this?

Use of a State Space Model to Study the Effect of Outdoor Air Quality on Indoor Air in Fairbanks Alaska

Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA, fttm1{at}uaf.edu

Ron Johnson

Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA

A usual method for studying the effective penetration efficiency of pollutants into buildings consists in performing a linear regression of outdoor and indoor samples. But, because of the dynamic relationship between outdoor and indoor concentrations, this method requires either long-term averages or steady-state conditions. Other methods use dynamic models but these normally require the knowledge of model parameters, such as the ventilation rate. This paper presents a state-space model analysis method that can be used for transient samples and doesn't require the knowledge of model parameters. It was used to study PM_2.5 and CO in Fairbanks, Alaska. The effective penetration efficiency for PM_2.5 ranged from 0.16 to 0.69, and was close to unity for CO. The outdoor generated PM_2.5 was responsible in average for about 67% of the indoor PM_2.5 in residences, and close to 100% in office environments.

Key Words: State space • Air quality • Particulates • Carbon monoxide • Penetration • Model

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?