Please use this identifier to cite or link to this item: https://doi.org/10.1177/1420326X06066160
Title: Local discomfort caused by draft perception in a space served by displacement ventilation system in the tropics
Authors: Yu, W.J.
Cheong, K.W.D. 
Sekhar, S.C. 
Tham, K.W. 
Kosonen, R.
Keywords: Displacement ventilation
Draft perception
Thermal gradient
Thermal sensation
Issue Date: Jun-2006
Source: Yu, W.J., Cheong, K.W.D., Sekhar, S.C., Tham, K.W., Kosonen, R. (2006-06). Local discomfort caused by draft perception in a space served by displacement ventilation system in the tropics. Indoor and Built Environment 15 (3) : 225-233. ScholarBank@NUS Repository. https://doi.org/10.1177/1420326X06066160
Abstract: This paper reports a subjective study in a field environmental chamber (FEC) served by a displacement ventilation (DV) system. Sixty tropically acclimatised subjects, 30 males and 30 females, were engaged in sedentary office work for 3 h. The subjects were exposed to three vertical air temperature gradients (nominally 1, 3 and 5 K·m-1) between 0.1 and 1.1 m heights and three room air temperatures (20, 23 and 26°C) at 0.6 m height. The object of this work was to investigate effects of temperature gradient and room air temperature on local discomfort due to air movement at different thermal sensations. The results indicated that vertical temperature gradient had an insignificant impact on draft perception. Draft perceptions at foot, calf, thigh and arm were affected by both overall and local thermal sensations. A cold sensation would increase the risk of draft complaints and a warm sensation would increase the percentage dissatisfied due to insufficient air movement. © 2006 SAGE Publications.
Source Title: Indoor and Built Environment
URI: http://scholarbank.nus.edu.sg/handle/10635/114015
ISSN: 1420326X
DOI: 10.1177/1420326X06066160
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