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dc.contributor.authorMysen, Mads
dc.contributor.authorHoløs, Sverre Bjørn
dc.contributor.authorYang, Aileen
dc.contributor.authorThunshelle, Kari
dc.contributor.authorSchild, Peter
dc.date.accessioned2020-01-10T11:01:32Z
dc.date.accessioned2020-04-07T08:00:16Z
dc.date.available2020-01-10T11:01:32Z
dc.date.available2020-04-07T08:00:16Z
dc.date.issued2019
dc.identifier.citationMysen SM, Holøs SB, Yang A, Thunshelle K, Schild P: What should the Minimum Ventilation Rate Be in a Demand-Controlled Ventilation Strategy?. In: Johansson, Bagge, Wahlström Å. Cold Climate HVAC 2018 - Sustainable Buildings in Cold Climates, 2019. Springer p. 339-349en
dc.identifier.isbn978-3-030-00662-4
dc.identifier.issn2352-2534
dc.identifier.issn2352-2534
dc.identifier.urihttps://hdl.handle.net/10642/8385
dc.description.abstractDemand-Controlled Ventilation is emerging as a dominant ventilation strategy in non-residential buildings in Norway. The ventilation airflow rate is controlled between pre-set minimum (Vmin) and maximum (Vmax) values, based on the signal from room-sensors. The choice of Vmax is based on current knowledge about nec-essary airflow rate to reach an acceptable IAQ (indoor air quality) with maximum likely personal load and emission load from building materials. The choice of Vmin has an obvious impact on energy use, but there are few studies about its impact on IAQ. Vmin varies typically from 0.7 to above 2 (l/s)/m² in Norway. In several buildings, Vmin is set to the upper range of this interval due to technical limitations of the specific equipment used. We have performed blind cross over intervention-studies with an untrained test panel to evaluate PAQ (perceived air quality) when entering 20 PAQ-rooms. All the rooms have low-emitting building materials, but extra pollution sources were introduced in some of the rooms for this study. Supplementary, intervention studies were performed in a dedicated test room to assess the impact of airflow rate on PAQ, performance and well-being during the first 20 minutes of occupa-tion. We found that increasing Vmin has a significant positive impact on PAQ in rooms with extra pollution sources. This effect was not consistently present in the low-emitting rooms. Airflow rates did not noticeably affect PAQ, perfor-mance and well-being during the first 20 minutes of occupation. This indicates that Vmin above 1 (l/s)/m² has limited benefit to IAQ in low emitting rooms.en
dc.description.sponsorshipThis study is funded by the Research Council of Norway EnergiX program under Grant 255375/E20 together with the industry partners Undervisningsbygg Oslo KF, GK Inneklima AS, DNB Næringseiendom AS, Erichsen & Horgen AS, Hjellnes Consult AS, Multiconsult AS, Interfil AS, Camfil Norge AS, Swegon AS, Belimo Automasjon Norge AS, NEAS AS and the foundation Norsk VVS Energi- og Miljøteknisk Forenings Stiftelse for forskning.en
dc.language.isoenen
dc.publisherSpringeren
dc.relation.ispartofCCC 2018: Cold Climate HVAC 2018 - Sustainable Buildings in Cold Climates
dc.relation.ispartofseriesSpringer Proceedings in Energy;CCC 2018: Cold Climate HVAC 2018
dc.rightsThis is a post-peer-review, pre-copyedit version of a book chapter published in Cold Climate HVAC 2018 - Sustainable Buildings in Cold Climates, that is part of the Springer Proceedings in Energy book series (SPE). The final authenticated version is available online at: https://dx.doi.org/10.1007/978-3-030-00662-4_29en
dc.subjectDemand-controlled ventilationen
dc.subjectIndoor air qualitiesen
dc.subjectPerformance testsen
dc.subjectLow-emitting materialsen
dc.subjectPollution levelsen
dc.subjectVentilation strategiesen
dc.titleWhat should the Minimum Ventilation Rate Be in a Demand-Controlled Ventilation Strategy?en
dc.typeConference objecten
dc.date.updated2020-01-10T11:01:32Z
dc.description.versionacceptedVersionen
dc.identifier.doihttps://dx.doi.org/10.1007/978-3-030-00662-4_29
dc.identifier.cristin1630436
dc.relation.projectIDNorges forskningsråd: 255375
dc.source.isbn978-3-030-00662-4


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