Thermal comfort, perceived air quality, and cognitive performance when personally controlled air movement is used by tropically acclimatized persons

S. Schiavon, B. Yang, Y. Donner, V. W.-C. Chang, W. W. Nazaroff

Research output: Contribution to journalArticleResearchpeer-review

43 Citations (Scopus)

Abstract

In a warm and humid climate, increasing the temperature set point offers considerable energy benefits with low first costs. Elevated air movement generated by a personally controlled fan can compensate for the negative effects caused by an increased temperature set point. Fifty-six tropically acclimatized persons in common Singaporean office attire (0.7 clo) were exposed for 90 minutes to each of five conditions: 23, 26, and 29°C and in the latter two cases with and without occupant-controlled air movement. Relative humidity was maintained at 60%. We tested thermal comfort, perceived air quality, sick building syndrome symptoms, and cognitive performance. We found that thermal comfort, perceived air quality, and sick building syndrome symptoms are equal or better at 26°C and 29°C than at the common set point of 23°C if a personally controlled fan is available for use. The best cognitive performance (as indicated by task speed) was obtained at 26°C; at 29°C, the availability of an occupant-controlled fan partially mitigated the negative effect of the elevated temperature. The typical Singaporean indoor air temperature set point of 23°C yielded the lowest cognitive performance. An elevated set point in air-conditioned buildings augmented with personally controlled fans might yield benefits for reduced energy use and improved indoor environmental quality in tropical climates.

Original languageEnglish
Pages (from-to)690-702
Number of pages13
JournalIndoor Air
Volume27
Issue number3
DOIs
Publication statusPublished - 1 May 2017
Externally publishedYes

Keywords

  • air movement
  • cognitive performance
  • perceived air quality
  • sick building syndrome
  • thermal comfort
  • tropically acclimatized person

Cite this

@article{e5e0bea43d764da5b72993f76a0ea97b,
title = "Thermal comfort, perceived air quality, and cognitive performance when personally controlled air movement is used by tropically acclimatized persons",
abstract = "In a warm and humid climate, increasing the temperature set point offers considerable energy benefits with low first costs. Elevated air movement generated by a personally controlled fan can compensate for the negative effects caused by an increased temperature set point. Fifty-six tropically acclimatized persons in common Singaporean office attire (0.7 clo) were exposed for 90 minutes to each of five conditions: 23, 26, and 29°C and in the latter two cases with and without occupant-controlled air movement. Relative humidity was maintained at 60{\%}. We tested thermal comfort, perceived air quality, sick building syndrome symptoms, and cognitive performance. We found that thermal comfort, perceived air quality, and sick building syndrome symptoms are equal or better at 26°C and 29°C than at the common set point of 23°C if a personally controlled fan is available for use. The best cognitive performance (as indicated by task speed) was obtained at 26°C; at 29°C, the availability of an occupant-controlled fan partially mitigated the negative effect of the elevated temperature. The typical Singaporean indoor air temperature set point of 23°C yielded the lowest cognitive performance. An elevated set point in air-conditioned buildings augmented with personally controlled fans might yield benefits for reduced energy use and improved indoor environmental quality in tropical climates.",
keywords = "air movement, cognitive performance, perceived air quality, sick building syndrome, thermal comfort, tropically acclimatized person",
author = "S. Schiavon and B. Yang and Y. Donner and Chang, {V. W.-C.} and Nazaroff, {W. W.}",
year = "2017",
month = "5",
day = "1",
doi = "10.1111/ina.12352",
language = "English",
volume = "27",
pages = "690--702",
journal = "Indoor Air",
issn = "0905-6947",
publisher = "Wiley-Blackwell",
number = "3",

}

Thermal comfort, perceived air quality, and cognitive performance when personally controlled air movement is used by tropically acclimatized persons. / Schiavon, S.; Yang, B.; Donner, Y.; Chang, V. W.-C.; Nazaroff, W. W.

In: Indoor Air, Vol. 27, No. 3, 01.05.2017, p. 690-702.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Thermal comfort, perceived air quality, and cognitive performance when personally controlled air movement is used by tropically acclimatized persons

AU - Schiavon, S.

AU - Yang, B.

AU - Donner, Y.

AU - Chang, V. W.-C.

AU - Nazaroff, W. W.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - In a warm and humid climate, increasing the temperature set point offers considerable energy benefits with low first costs. Elevated air movement generated by a personally controlled fan can compensate for the negative effects caused by an increased temperature set point. Fifty-six tropically acclimatized persons in common Singaporean office attire (0.7 clo) were exposed for 90 minutes to each of five conditions: 23, 26, and 29°C and in the latter two cases with and without occupant-controlled air movement. Relative humidity was maintained at 60%. We tested thermal comfort, perceived air quality, sick building syndrome symptoms, and cognitive performance. We found that thermal comfort, perceived air quality, and sick building syndrome symptoms are equal or better at 26°C and 29°C than at the common set point of 23°C if a personally controlled fan is available for use. The best cognitive performance (as indicated by task speed) was obtained at 26°C; at 29°C, the availability of an occupant-controlled fan partially mitigated the negative effect of the elevated temperature. The typical Singaporean indoor air temperature set point of 23°C yielded the lowest cognitive performance. An elevated set point in air-conditioned buildings augmented with personally controlled fans might yield benefits for reduced energy use and improved indoor environmental quality in tropical climates.

AB - In a warm and humid climate, increasing the temperature set point offers considerable energy benefits with low first costs. Elevated air movement generated by a personally controlled fan can compensate for the negative effects caused by an increased temperature set point. Fifty-six tropically acclimatized persons in common Singaporean office attire (0.7 clo) were exposed for 90 minutes to each of five conditions: 23, 26, and 29°C and in the latter two cases with and without occupant-controlled air movement. Relative humidity was maintained at 60%. We tested thermal comfort, perceived air quality, sick building syndrome symptoms, and cognitive performance. We found that thermal comfort, perceived air quality, and sick building syndrome symptoms are equal or better at 26°C and 29°C than at the common set point of 23°C if a personally controlled fan is available for use. The best cognitive performance (as indicated by task speed) was obtained at 26°C; at 29°C, the availability of an occupant-controlled fan partially mitigated the negative effect of the elevated temperature. The typical Singaporean indoor air temperature set point of 23°C yielded the lowest cognitive performance. An elevated set point in air-conditioned buildings augmented with personally controlled fans might yield benefits for reduced energy use and improved indoor environmental quality in tropical climates.

KW - air movement

KW - cognitive performance

KW - perceived air quality

KW - sick building syndrome

KW - thermal comfort

KW - tropically acclimatized person

UR - http://www.scopus.com/inward/record.url?scp=85001785627&partnerID=8YFLogxK

U2 - 10.1111/ina.12352

DO - 10.1111/ina.12352

M3 - Article

VL - 27

SP - 690

EP - 702

JO - Indoor Air

JF - Indoor Air

SN - 0905-6947

IS - 3

ER -