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Experimental research on thermal comfort in the university classroom of regular semesters in Korea
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  • Experimental research on thermal comfort in the university classroom of regular semesters in Korea
  • Experimental research on thermal comfort in the university classroom of regular semesters in Korea
저자명
Jung. Gun-Joo,Song. Sung-Ki,Ahn. Young-Chull,Oh. Geun-Sug,Im. Young-Bin
간행물명
Journal of mechanical science and technology
권/호정보
2011년|25권 2호|pp.503-512 (10 pages)
발행정보
대한기계학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

This research has investigated physical variables affecting indoor thermal comfort and subjective responses of thermal comfort of students in a university in Korea in which the weather is oceanic temperate climate, and has been performed to contribute to the research fields of Sustainable Thermal Standard and Adaptive Thermal Comfort (ATC). This research is based on the ISO 7730-2005 standard and the ATC theories and 4 main variables of PMV such as dry bulb temperature (Ta), relative humidity (RH), black bulb temperature (Tg), and air velocity (Va) are measured once a week during two regular semesters. A clothing insulation, a thermal sensation vote (TSV), an acceptability of thermal environment, and a preference for cooling and heating are investigated at the same time using a questionnaire. This study was carried out for 26 weeks during the spring season, from March to June 2009, and the autumn season, from September to December 2009. The main achievements of this study are as follows. Monthly Mean Outdoor Temperature (MMOT) and Operative Temperature (OT) in the classroom during research periods are $7.4{sim}23.3^{circ}C$ and $17.5{sim}29.0^{circ}C$, respectively. The acceptability ratio of thermal environment shows over 80% when the range of OT in the classroom is $17{sim}25^{circ}C$, and the range can be applicable to operative index of heating and cooling of classroom. The mean TSV of respondents is almost "neutral (0)" when the PMV in the classroom moves to "neutral (0)" and "slightly cool (-1)", and the TSV is almost "+1.5" when the PMV moves to "slightly warm (+1)". The acceptability ratio of thermal environment is slightly different from ASHRAE Standard 55-2004. So it is necessary to more investigate standard range of acceptability of thermal environment in oceanic temperate climate region using much more databases.