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Field Studies of Subjective Effects on Thermal Comfort in a University Classroom
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Two field studies were conducted in a university classroom in the autumn of 2004 in Harbin. The objective of these studies was to assess the thermal conditions and the subjective effects on occupant thermal comfort. A field study was carried out when the undergraduate students were not taught the theory of thermal comfort. A second study was conducted after the undergraduate students knew something about thermal comfort. The thermal comfort variables were measured when the students were filling in the subjective questionnaires on thermal sensation and thermal comfort. A total of 167 sets of questionnaire responses were obtained. The indoor thermal environmental data for the two days are almost the same; however the thermal acceptability is different. The acceptability of the first study is 96.0%, which is higher than the acceptability of 91.5% according to the PPD. In contrast, the acceptability of the second study is 57.4%, which is very low compared with the acceptability of 95.0% according to the PPD. The students' thermal acceptability of the thermal environment before learning the theory of thermal comfort is higher than after learning about thermal comfort. These results confirm the existence of subjective effects on thermal comfort.
Wang, J.; Wang, Z. (2006). Field Studies of Subjective Effects on Thermal Comfort in a University Classroom. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from