Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/223960
Title: THERMAL SENSATION AND STUDENTS � COGNITIVE PERFORMANCE UNDER TWO AIR-CONDITIONING PARADIGMS - A FIELD STUDY
Authors: GAO YUSHI
Keywords: Building
Building Performance and Sustainability (Master)
Tham Kwok Wai
2019/2020 BPS
BPS (Master)
Master (Building)
Issue Date: 7-Jun-2020
Citation: GAO YUSHI (2020-06-07). THERMAL SENSATION AND STUDENTS � COGNITIVE PERFORMANCE UNDER TWO AIR-CONDITIONING PARADIGMS - A FIELD STUDY. ScholarBank@NUS Repository.
Abstract: Field study is conducted in two classrooms, one with conventional air conditioning system, at indoor air temperature of around 23℃ and low air movement, and the other in a newly built Net Zero Energy Building (NZEB) with hybrid cooling system, at temperature of around 27℃ with ceiling fans providing elevated air movement. Objective environmental parameters measurements were conducted in these two classrooms and subjective surveys on environmental sensations and acceptability were administered for 87 voluntary student subjects recruited from the university students. The experiment was conducted on two days across two weeks with a “cross-over” design. Three widely used computer-based cognitive tests (Tower of London, Stroop and Operation Span Task) were completed by subjects in the two experiment classrooms. Results show that significantly different thermal sensation, air movement sensation and IAQ acceptability were perceived in the two classrooms. However, no significant difference in thermal comfort level, temperature acceptability, air movement acceptability and performance results by all performance indicators were found between these two classrooms. It indicates that the elevated air movement in the NZEB compensates for the elevated air temperature, and no influence on cognitive performance (planning, cognitive inhibition and working memory) is found. Arousal theory was considered when analyzing the relationship between thermal sensations and performance results. It’s found that for Stroop task, where strong concentration is required, the results are in line with Yerkes-Dodson law, where cooler environment is needed for better Stroop task performance. However, for Operation Span task, we suggest that arousal law for tropically acclimatized people may be different, and personality may also play a role in working memory and multi-tasking performance, which need to be tested in further research.
URI: https://scholarbank.nus.edu.sg/handle/10635/223960
Appears in Collections:Master's Theses (Restricted)

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