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dc.contributor.authorThunshelle, Kari
dc.contributor.authorNordby, Henrik S.
dc.contributor.authorSolberg, Håkon Rikoll
dc.contributor.authorHoløs, Sverre Bjørn
dc.contributor.authorSchild, Peter
dc.identifier.citationThunshelle K, Nordby, Solberg HR, Holøs SB, Schild P. Acceptable air velocities using demand-controlled ventilation for individual cooling. E3S Web of Conferences. 2020;172en
dc.description.abstractOne of the main challenges in highly insulated buildings is the increasing share of energy demand for cooling. New solutions for low energy cooling are needed. Individual cooling by demand-controlled ventilation and use of ceiling mounted nozzles for cooling by higher air velocities could be an alternative. A laboratory study was designed to investigate thermal comfort and thermal sensation for elevated indoor room temperatures relevant to Norwegian summer climate; 24℃, 26℃ and 28℃ with a relative humidity set point of 40 %. Air flow was set to give air velocities of 0.25 m/s, 0.50 m/s and 0.75 m/s. 21 test persons were exposed to different air velocities in a cross-over study. Questionnaires on thermal comfort and thermal sensation were answered repeatedly. Jets from ceiling mounted supply air nozzles was shown to improve thermal comfort at 24 °C, 26 °C and 28 °C. In general, most test persons preferred low air velocity (0.25 m/s) at 24 °C, while high (0.5 m/s) or extra high (0.75 m/s) air velocities were preferred at 26 °C. At 28 °C, extra high or even higher air velocities were preferred.en
dc.description.sponsorshipThis study is funded by the Research Council of Norway EnergiX program under Grant Agreement 269381 together with the industry partners GK Inneklima AS, Trox Auranor Norge AS, Entra ASA and Topro AS.en
dc.publisherEDP Openen
dc.relation.ispartofseriesE3S Web of Conferences;Volume 172, 2020. 12th Nordic Symposium on Building Physics (NSB 2020). Article Number: 09002
dc.rightsCreative Commons Attribution 4.0 International (CC BY 4.0) Licenseen
dc.subjectAir velocitiesen
dc.subjectDemand-controlled ventilationen
dc.subjectIndividual coolingen
dc.subjectHighly insulated buildingsen
dc.subjectEnergy demanden
dc.subjectEnergy efficient buildingsen
dc.titleAcceptable air velocities using demand-controlled ventilation for individual coolingen
dc.typeJournal article
dc.typePeer revieweden
dc.source.journalE3S Web of Conferences
dc.relation.projectIDNorges forskningsråd: 269381

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