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为了解重庆主城区商场地下停车库空气品质现状,对重庆主城区商场地下停车库内苯,甲醛,一氧化碳(CO),二氧化碳(CO_2)的浓度和温湿度等六个参数的进行现场测试。测试结果表明,在没有机械通风的条件下,车库中苯,甲醛,CO和CO_2的浓度均未超过相关标准浓度限值。其中苯和甲醛的最高浓度分别为1.911 mg/m3和0.143 mg/m3,CO和CO_2的最高浓度则分别为19.03 ppm和1774 ppm,车库内的温湿度较高,热湿环境较差。从污染物的浓度限值来看,可以完全利用自然通风来降低车库内各污染物的浓度,使其达标。但从工作环境的热舒适性来看,只利用自然通风不能使工作人员感到舒适,仍然需要机械通风。
In order to understand the status quo of the air quality in underground parking lots in shopping malls in downtown Chongqing, six parameters of benzene, formaldehyde, carbon monoxide (CO), carbon dioxide (CO 2) concentration and temperature and humidity in the underground parking lot of shopping malls in downtown Chongqing were tested on site. Test results show that in the absence of mechanical ventilation, the concentration of benzene, formaldehyde, CO and CO_2 in the garage did not exceed the relevant standard concentration limits. The highest concentrations of benzene and formaldehyde were 1.911 mg / m3 and 0.143 mg / m3, while the highest concentrations of CO and CO2 were 19.03 ppm and 1774 ppm, respectively. The temperature and humidity in the garage were higher and the heat and humidity environment were worse. From the concentration limits of pollutants, natural ventilation can be fully used to reduce the concentration of pollutants in the garage so that they meet the standards. However, from the thermal comfort of the working environment, only the use of natural ventilation can not make the staff feel comfortable, still need mechanical ventilation.