摘要
以夏季计算机房为案例分析,利用数值模拟的方法,研究室内CO_2浓度值随人员数量变化达到预警值所需要的时间。计算结果表明:室内CO_2浓度分布与室内流速场有关,而温度场对其影响不大;CO_2浓度的均值达到预警值900ppm的时间与室内人员数量有关;预警时间与人均占有体积的关系为t(28)-36.12(10)95.69x。可以采用该公式确定置换通风的间隔时间,以保持室内的CO_2浓度不超过900ppm。
In this paper, the summer computer room as a case, by using the method of numerical simulation for the study of the indoor CO2 concentration reaches the warning value of the time required with peoples. The calculation results show that indoor CO2 concentration distribution is related to the indoor flow field, and the temperature field has little effect on it. Indoor CO2 average to reach the time required for the 900ppm is relevant to the numbers. The relationship between the warning time and the per capita volume of units follows the function distribution oft =-36.12 ＋ 95.69x. The formula can be used to determine the interval time of displacement ventilation, to keep the indoor CO2 concentration not more than 900ppm.
出处
《武汉纺织大学学报》
2017年第6期71-75,共5页
Journal of Wuhan Textile University
关键词
CO2
浓度
预警时间
数值模拟
CO
concentration
warning time
numerical simulation
