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Borgeson, S and Brager, G (2011) Comfort standards and variations in exceedance for mixed-mode buildings. Building Research & Information, 39(02), 33.

Cândido, C, Lamberts, R, de Dear, R, Bittencourt, L and de Vecchi, R (2011) Towards a Brazilian standard for naturally ventilated buildings: guidelines for thermal and air movement acceptability. Building Research & Information, 39(02), 145–53.

de Dear, R (2011) Revisiting an old hypothesis of human thermal perception: alliesthesia. Building Research & Information, 39(02), 108–17.

Guo, K, Zhang, L and Wang, T (2021) Concession period optimisation in complex projects under uncertainty: a public–private partnership perspective. Construction Management and Economics, 39(02), 156–72.

Le, P L, Jarroudi, I, Dao, T and Chaabane, A (2021) Integrated construction supply chain: an optimal decision-making model with third-party logistics partnership. Construction Management and Economics, 39(02), 133–55.

Moezzi, M and Goins, J (2011) Text mining for occupant perspectives on the physical workplace. Building Research & Information, 39(02), 169–82.

Scharpff, J, Schraven, D, Volker, L, Spaan, M T J and de Weerdt, M M (2021) Can multiple contractors self-regulate their joint service delivery? A serious gaming experiment on road maintenance planning. Construction Management and Economics, 39(02), 99–116.

Strengers, Y and Maller, C (2011) Integrating health, housing and energy policies: social practices of cooling. Building Research & Information, 39(02), 154–68.

Wang, R, Lu, W and Wei, Y (2021) Owners’ use of contract-based power in construction project transactions: restrictions from process specificity and uncertainty. Construction Management and Economics, 39(02), 117–32.

Zhang, H, Arens, E and Pasut, W (2011) Air temperature thresholds for indoor comfort and perceived air quality. Building Research & Information, 39(02), 134–44.

  • Type: Journal Article
  • Keywords: adaptive comfort; air movement; air-conditioned buildings; free running; personal environmental control; thermal acceptability; thermal comfort
  • ISBN/ISSN: 0961-3218
  • URL: https://doi.org/10.1080/09613218.2011.552703
  • Abstract:
    Air temperature thresholds are investigated and proposed for acceptable comfort in air-conditioned buildings. Using the ASHRAE database of field studies in which acceptability votes were obtained from occupants, it is shown that within the thresholds the acceptability is indistinguishable. Therefore, there is little gain from conditioning spaces to an ‘optimum’ air temperature, a practice that involves significant energy cost. However, beyond the thresholds there is a significant drop-off in acceptability. Ideally, air-conditioning would be used only when the environmental conditions are beyond the thresholds. The use of ceiling fans or personal environmental control systems broadens the threshold range. Thresholds are determined for both air-conditioned and ventilation-cooled buildings in the database. The equally acceptable range between the thresholds is 8–10 K in both types of buildings. It is possible that a perception of reduced air quality in warm environments could impose an upper temperature threshold. Perceived air quality is examined in two laboratory studies with air temperatures ranging from 18 to 30°C. Perceived air quality is seen to be closely correlated to thermal comfort rather than to temperature; as long as thermal comfort is maintained by air movement, perceived air quality will be acceptable. Relationships between temperature thresholds and productivity, operating set-points, and energy use are also discussed.

Zhang, J and Yuan, X (2021) Stochastic modelling of maintenance flexibility in Value for Money assessment of PPP road projects. Construction Management and Economics, 39(02), 173–91.