Detailed measured air speed distribution in four commercial buildings with ceiling fans
نویسندگان
چکیده
The layout of ceiling fans in buildings is challenging because the need to co-ordinate with other elements space, and resulting airflows within occupied space interact furniture. This study conducted detailed air speed measurements four different room sizes, furniture configurations, fan types, ceiling-fan-to-floor-area ratios. We measured speeds across spaces at heights while varying operation modes such as rotational speed, operating direction, number fans. In total, we collected 207,080 samples 343 sites under 20 test conditions. paper presents magnitude distribution speeds, cooling effects, their influencing factors. Airspeed Coverage Index (ACI=Fanairspeed(SF)×Fandiameter(D)Averageareaservedperceilingfan(A)) describes combined effects multiple factors on speed. ACI employed predict average occupant effect, yielding regression confidences higher than 0.95. When designing a target airspeed or can help determine parameters density required for choices. data are compared predictions from CBE tool that had been developed laboratory tests simplified comparison displays blocking furniture, lowering movement well reducing ankle level increasing it heights. effect increases also visually present interactions which triplets arranged linearly diagonally, showing diagonal improves its uniformity.
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1 Department of Civil and Environmental Engineering, Faculty of Engineering and Physical Sciences (FEPS), University of Surrey Guildford GU2 7XH, Surrey, United Kingdom 2 Environmental Flow Research Centre, FEPS, University of Surrey Guildford GU2 7XH, Surrey, United Kingdom 3 Centre for Smart Infrastructure and Construction, Department of Architecture, University of Cambridge, 1–5 Scroope Terr...
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ژورنال
عنوان ژورنال: Building and Environment
سال: 2021
ISSN: ['0360-1323', '1873-684X']
DOI: https://doi.org/10.1016/j.buildenv.2021.107979