Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Acceptable indoor air quality at reduced energy consumption for high-occupancy buildings with intermittent operation

Acceptable indoor air quality at reduced energy consumption for high-occupancy buildings with... In high-occupancy buildings with intermittent and short-occupancy events, occupants and their activities are the primary sources of contaminants, rendering continuous ventilation unnecessary for achieving acceptable indoor air quality (IAQ). Because the recommended ventilation rate constitutes a substantial percentage of the supply air, reducing or discontinuing ventilation during unoccupied periods saves significant energy. This study aims to assess the IAQ of high-occupancy buildings with different ventilation strategies and occupancy schemes to conserve energy using CONTAM (IAQ and ventilation analysis program) and Visual-DOE (energy analysis program). The results show that intermittently operating the ventilation 1 hour before occupancy saves 25% in the auditorium and 33% in the mosque compared to the continuous ventilation strategy. The intermittently operated strategy with ventilation 1 hour before occupancy also revealed an acceptable CO2 level (<1000ppm), while the Formaldehyde (HCHO) levels decreased with increasing ventilation rates, as humans’ contribution to the HCHO concentration indoors was insignificant. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Architectural Science Review Taylor & Francis

Acceptable indoor air quality at reduced energy consumption for high-occupancy buildings with intermittent operation

Download PDF
17 pages

Loading next page...
 
/lp/taylor-francis/acceptable-indoor-air-quality-at-reduced-energy-consumption-for-high-P3xgp41fCM

References (108)

Publisher
Taylor & Francis
Copyright
© 2023 Informa UK Limited, trading as Taylor & Francis Group
ISSN
1758-9622
eISSN
0003-8628
DOI
10.1080/00038628.2023.2199705
Publisher site
See Article on Publisher Site

Abstract

In high-occupancy buildings with intermittent and short-occupancy events, occupants and their activities are the primary sources of contaminants, rendering continuous ventilation unnecessary for achieving acceptable indoor air quality (IAQ). Because the recommended ventilation rate constitutes a substantial percentage of the supply air, reducing or discontinuing ventilation during unoccupied periods saves significant energy. This study aims to assess the IAQ of high-occupancy buildings with different ventilation strategies and occupancy schemes to conserve energy using CONTAM (IAQ and ventilation analysis program) and Visual-DOE (energy analysis program). The results show that intermittently operating the ventilation 1 hour before occupancy saves 25% in the auditorium and 33% in the mosque compared to the continuous ventilation strategy. The intermittently operated strategy with ventilation 1 hour before occupancy also revealed an acceptable CO2 level (<1000ppm), while the Formaldehyde (HCHO) levels decreased with increasing ventilation rates, as humans’ contribution to the HCHO concentration indoors was insignificant.

Journal

Architectural Science Review – Taylor & Francis

Published: May 4, 2023

Keywords: High occupancy buildings; ventilation; indoor air quality; energy savings; intermittent occupancy; contaminant

There are no references for this article.