Indoor air quality in low energy schools: the use of CO2 based demand controlled ventilation evaluated

T.J. (Dave) Baas, W. Zeiler

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Dutch government encourages with guidelines sustainable design of schools. The guidelines contain requirements regarding the indoor air quality in the schools. In order to evaluate the indoor air quality in the schools, measurements were performed in two new built primary schools. Both schools were designed on classification B of the Dutch government guidelines and have a CO2 based demand controlled ventilation system. To evaluate the indoor air quality, measurements were performed on CO2 level and a questionnaire was held amongst the staff of the schools. Only one of the four measured classrooms met the design criteria while the other classrooms showed exceedances of 46 to 65% during occupancy hours. The measured air flow rates corresponded with the relatively high CO2 levels that were found. At one school, the CO2 levels measured by the local CO2 transmitter were strikingly low. Deviations of 300 to 800 ppm compared to the accurate CO2 transmitter of the measurement setup were found. Resulting high CO2 levels, which were caused by the deviations of the local transmitter, showed that the control strategy at both schools did not meet the design requirements. It is not possible to ensure a good indoor air quality with the current accuracy of the local transmitters.
Original languageEnglish
Title of host publicationProceedings Roomvent & Ventilation 2018
Subtitle of host publicationExcellent Indoor Climate and High Performing Ventilation
EditorsRisto Kosonen, Mervi Ahola, Jarkko Narvanne
Place of PublicationHelsinki
PublisherSIY Indoor Air Information Oy
Number of pages6
ISBN (Print)978-952-5236-48-4
Publication statusPublished - 2 Jun 2018
EventRoomvent&Ventilation 2018 : Excellent Indoor Climate and HighPperforming Ventilation - Alto University , Espoo, Finland
Duration: 2 Jun 20185 Jun 2018

Conference

ConferenceRoomvent&Ventilation 2018
CountryFinland
CityEspoo
Period2/06/185/06/18

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