Natural ventilation in warm climates: The challenges of thermal comfort, heatwave resilience and indoor air quality
Natural ventilation in warm climates: The challenges of thermal comfort, heatwave resilience and indoor air quality
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DOI：
10.1016/j.rser.2020.110669
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发表时间：
2021-03-01
影响因子：
15.9
通讯作者：
Mottet, Laetitia
中科院分区：
文献类型：
--
作者：
Ahmed, Tariq;Kumar, Prashant;Mottet, Laetitia
在建筑物中，能源主要由机械空调系统消耗。需要低能耗的替代方案，如自然通风。然而，它们需要能够科普日益增加的热浪和污染，特别是在温暖的气候中。这篇综述文章研究了自然通风在温暖气候中提供足够的热舒适性、抵御热浪的能力和良好的室内空气质量的能力。单侧通风提供热舒适性的能力最差，而交叉通风在降低室内空气温度方面的性能优于室外。然而，捕风器和太阳能烟囱通过产生相对较高的通风率显示出更好的性能。在热浪和未来的气候情况下，通过交叉通风的自然通风无法满足内部热舒适标准。一个潜在的低能耗解决方案可能是将太阳能烟囱或捕风器与水蒸发冷却相结合。对文献的关键综合表明，这些系统可以产生高通风率，并在温暖的天气（>35摄氏度）下保持室内温度比室外温度低8摄氏度左右。然而，没有发现针对未来气候情景测试这些系统的研究，建议进一步研究。文献支持自然通风是有效地消除室内产生的污染，由于足够的通风率。然而，在室外污染严重的地区使用未经过滤的自然通风会增加室内有害颗粒物的沉积。随着空气污染的日益严重，迫切需要进一步的研究来调查过滤器启用的自然通风，特别是与太阳能烟囱/捕风器结合。
In buildings, energy is primarily consumed by mechanical air conditioning systems. Low energy alternatives, such as natural ventilation, are needed. However, they need to be able to cope with increasing heatwaves and pollution, particularly in warm climates. This review paper looked at the ability of natural ventilation to provide adequate thermal comfort, resilience against heatwaves, and good Indoor Air Quality in warm climates. Single sided ventilation demonstrates the poorest ability to provide thermal comfort, while cross ventilation highlights better performance in terms of reducing indoor air temperatures compared to outdoor. However, windcatchers and solar chimneys displayed even better performance by producing relatively high ventilation rates. During heatwaves and future climatic scenarios, natural ventilation, by cross-ventilation, was not able to meet internal thermal comfort standards. A potential low energy solution could be combining solar chimneys or windcatchers with water evaporation cooling. A critical synthesis of the literature suggests that these systems can generate high ventilation rates and keep indoor temperatures around 8 degrees C cooler than outdoor temperatures in warm weather (>35 degrees C). However, no studies were found testing these systems against future climate scenarios, and further studies are recommended. The literature supported natural ventilation being effective in removing pollution generated indoors due to adequate ventilation rates. However, using unfiltered natural ventilation for areas with high outdoor pollution can increase the indoor deposition of harmful particulate matter. With increasing air pollution, further studies are urgently required to investigate filter enabled natural ventilation, particularly with solar chimney/windcatcher incorporated.