Natural Ventilation Effectiveness of Round Wall-Mounted Vent Caps in Residential Kitchens
Natural Ventilation Effectiveness of Round Wall-Mounted Vent Caps in Residential Kitchens
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DOI：
10.3390/en11051230
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发表时间：
2018-05
期刊：
影响因子：
3.2
通讯作者：
Y. Lin;C. Iba;Chi-Ming Lai
中科院分区：
文献类型：
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作者：
Y. Lin;C. Iba;Chi-Ming Lai
本研究探讨了不同数量的壁挂式通风帽及其安装位置对住宅厨房室内空气环境的影响，其中有限的信息。通过风洞试验研究了通风帽的诱导通风量，并利用计算流体动力学（CFD）数值模拟研究了通风帽对住宅厨房自然通风效率的影响。然后将结果应用于确定适当的通风帽数量及其适当的安装位置。风洞试验结果表明，风速为0-6 m/s的室外风平行于带有通风帽的墙壁流动，诱导室内空气通过通风帽排出，通风量为0-20 m3/h;当风垂直于墙壁时，室外空气以0-31.9 m3/h的速度流入室内。CFD数值模拟结果表明，厨房通风帽的安装可以降低厨师呼吸区的平均一氧化碳浓度。需要足够数量的通风帽和适当的安装位置，以确保壁挂式通风帽的自然通风效果。
This study explores the effect of different numbers of wall-mounted vent caps and their installation locations on the indoor air environment in residential kitchens, for which limited information is available. Wind tunnel tests were performed to study the induced ventilation rates of a vent cap, and the impact of vent caps on the natural ventilation efficiency in residential kitchens was examined using computational fluid dynamics (CFD) numerical simulations. The results were then applied to determine the appropriate quantity of vent caps and their proper installation location. The wind tunnel test results indicated that outdoor winds with speeds of 0–6 m/s that flow parallel to the wall with a vent cap induce indoor air to exit through the cap with ventilation rates of 0–20 m3/h; when the wind blows perpendicular to the wall, outdoor air with 0–31.9 m3/h flows indoors. CFD numerical simulations showed that the installation of kitchen vent caps can reduce the average carbon monoxide concentration in the cook’s breathing zone. A sufficient quantity of vent caps and the proper installation location are required to ensure the natural ventilation effectiveness of wall-mounted vent caps.