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首页> 外文期刊>International Journal of Ventilation >Minimum Outdoor Air Supply for Radon in High Rise Residential Buildings - Natural Ventilation v Air-Conditioning Unit
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Minimum Outdoor Air Supply for Radon in High Rise Residential Buildings - Natural Ventilation v Air-Conditioning Unit

机译：高层住宅建筑物中Rad的最低室外空气供应-自然通风v空调装置

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摘要

Natural ventilation, as a medium for air exchange between the indoor and outdoor environment, is known for its functions of providing outdoor 'fresh' air and removing indoor air pollutants. In this study, the minimum outdoor air ventilation rate required to maintain radon concentration at an acceptable level was determined. Radon and air change per hour (ac/h) were measured simultaneously and systematically in a concrete high rise residential building (denoted as SP). The radon level and radon emanation rate of SP were about 435 Bq/m~3 and 72.48 Bq/m~2/h respectively. Modelling results showed that, for the action level of 200 Bq/m~3 (according to WHO) and 150 Bq/m~3 (HKEPD), the outdoor air supply in SP should exceed 0.61 ac/h and 0.88 ac/h respectively. The average background infiltration in SP was 0.36 ac/h and a window-type airconditioner can deliver 0.74 ac/h. In situ measurements showed that background infiltration in SP was inadequate to suppress indoor radon below 200 Bq/m~3 but a well vented air-conditioner was sufficient to achieve that level.
机译：自然通风作为室内和室外环境之间空气交换的媒介，以其提供室外“新鲜”空气和去除室内空气污染物的功能而闻名。在这项研究中，确定了将ra气浓度保持在可接受水平所需的最小室外空气通风速率。在混凝土高层住宅建筑（表示为SP）中，同时并系统地测量了每小时的and和空气变化量（ac / h）。 SP的水平和ra释放率分别约为435 Bq / m〜3和72.48 Bq / m〜2 / h。建模结果表明，对于200 Bq / m〜3（根据WHO）和150 Bq / m〜3（HKEPD）的作用水平，SP中的室外空气供应应分别超过0.61 ac / h和0.88 ac / h 。 SP的平均背景渗透率为0.36 ac / h，而窗式空调的平均渗透速度为0.74 ac / h。原位测量表明，SP的背景渗透不足以抑制室内indoor低于200 Bq / m〜3，但通风良好的空调足以达到该水平。

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