Indoor and outdoor natural ventilation conditions of low-rise housing in small-lot residential subdivisions are strongly influenced by surrounding buildings. To account for the influence of surrounding buildings, the wind tunnel model must include sufficient surrounding buildings to yield reliable indoor and outdoor natural ventilation data. For small-scale building models the traditional test methods are not an economic method for estimating indoor and outdoor natural ventilation conditions in a wind tunnel. To accurately estimate indoor and outdoor natural ventilation conditions of low-rise housing in a wind tunnel correct modelling of the natural wind, appropriate building models and effective economic testing methods is required. This study discusses new testing methods in wind tunnels for estimating indoor and outdoor natural ventilation conditions of low-rise housing in small-lot residential subdivisions.
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