Operational Challenges of Modern Demand-Control Ventilation Systems : A Field Study
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2022-03
Major/Subject
Mcode
Degree programme
Language
en
Pages
15
Series
Buildings, Volume 12, issue 3
Abstract
To maintain proper indoor air quality and increase energy efficiency, a demand-control ventilation (DCV) system has become a popular solution. This paper reports the findings of a field study conducted on the performance of the DCV systems in eight public buildings in southern Finland. We conducted the measurements in two stages. In the first stage, we made a site visit and measured the airflow rates in the design operation conditions of the chosen space. For the second stage, we left temperature/humidity data loggers to monitor the thermal conditions during the normal operation mode of the space. The results indicate that, out of the eight studied spaces, only one DCV system was performing according to design specifications. While the systems were operating in a suboptimal way, the flaws in functionality were mostly minor, and none of the sites had perceived indoor-air-quality-and/or thermal-condition-related problems during the time of measurement. Nonetheless, this result shows that the potential benefits of DCV were partially lost due to malfunctioning systems. Additionally, by only monitoring room air temperature (or IAQ) without airflow rate measurements in different operation modes, it is not possible to conclude whether the DCV system works properly or not.Description
Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords
demand-control ventilation, field study, performance of ventilation system, public buildings
Other note
Citation
Zhao, W, Kilpeläinen, S, Bask, W, Lestinen, S & Kosonen, R 2022, ' Operational Challenges of Modern Demand-Control Ventilation Systems : A Field Study ', Buildings, vol. 12, no. 3, 378 . https://doi.org/10.3390/buildings12030378