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Human perception of room temperature and intermittent air jet cooling in a classroom
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy system.ORCID iD: 0000-0002-2171-3013
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy system.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Environmental psychology.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Environmental psychology.ORCID iD: 0000-0002-7584-2275
2016 (English)In: Indoor + Built Environment, ISSN 1420-326X, E-ISSN 1423-0070Article in journal (Refereed) Epub ahead of print
Abstract [en]

Environments with high temperatures and under steady conditions are perceived poor. The introduction of airflow variations in such environments improves the perception. However the risk of draught is high and to avoid this, variations in high velocity supply is used. This method is far more energy efficient than cooling the entire space as only the occupants are cooled. This paper discusses two studies on occupant cooling conducted at the University of Gävle.  The experiments were performed in a full scale mockup classroom and a total of 85 students participated. In Study 1, students sat in a classroom for about 60 minutes in one of two heat conditions: 20 and 25 º C. In Study 2, the indoor parameters of 25 º C were maintained but airflow variation in the sitting zone was manipulated. In both studies, the participants performed various tasks and answered questionnaires on their perception of the indoor climate. As shown here, higher room temperature deteriorates human perception of the indoor climate in classrooms, and the use of intermittent air jet cooling improves the perception of indoor climate just like cooling by reducing the room air temperature. This study contributes to further knowledge of how convective cooling can be used as a method of cooling in school environments so as to improve on building energy use. 

Place, publisher, year, edition, pages
2016.
Keyword [en]
Heat, air jet cooling, Air velocity variations, Human perception, Indoor air quality, thermal sensation
National Category
Psychology (excluding Applied Psychology) Building Technologies
Identifiers
URN: urn:nbn:se:hig:diva-20211DOI: 10.1177/1420326X16628931OAI: oai:DiVA.org:hig-20211DiVA: diva2:851624
Available from: 2015-09-07 Created: 2015-09-07 Last updated: 2016-12-05Bibliographically approved

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Kabanshi, AlanWigö, HansLjung, RobertSörqvist, Patrik
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