The enhancement of pollutant removal in underground enclosed parking lots by reconsideration of the exhaust vent heights
The enhancement of pollutant removal in underground enclosed parking lots by reconsideration of the exhaust vent heights
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DOI：
10.1016/j.tust.2018.04.005
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发表时间：
2018-07-01
影响因子：
6.9
通讯作者：
Heidarinejad, Ghassem
中科院分区：
文献类型：
--
作者：
Aminian, Javad;Maerefat, Mehdi;Heidarinejad, Ghassem
提高室内空气质量（IAQ）是在封闭式停车场采用通风系统的主要目的。进风口和出风口的合理布置对提高室内空气质量、减少停车场污染物的排放和能耗有重要作用。本文通过数值模拟来评估这些参数的影响。求解了具有适当边界条件的守恒方程。研究了排气孔位置对提高室内空气质量的影响，发现了排气孔位置对气流形态和能耗的影响。结果表明，停车场采用纵向通风方式，并在适当的高度设置排风口，可以改善室内空气质量，降低能耗。考虑到一氧化碳浓度及其去除效果，已确定应安装排气口的适当高度。结果表明：排气孔位置的无因次高度在0.5 ~ 0.7之间较为适宜。
Increasing indoor air quality (IAQ) is the main aim of employing ventilation systems in enclosed parking lots. The proper placement of supply air inlets and exhaust vents have great contribution in increasing indoor air quality and reduces both the amount of contaminant and energy consumption in parking lots. In this paper, the numerical simulation has been performed to assess effects of these parameters. The conservation equations with appropriate boundary conditions have been solved. The effect of exhaust vent locations on increasing IAQ has been investigated and its effect on flow pattern and energy consumption has been found. The results indicate that, if there is a longitudinal ventilation flow in the parking lot and the exhaust vents are installed at properly determined heights, the IAQ would be improved and the amount of energy consumption would be reduced. Taking into account the amount of CO concentration and its removal effectiveness, the appropriate height at which an exhaust vent should be installed has been determined. The results show that the appropriate non-dimensional height of the location of exhaust vents is between 0.5 and 0.7.