摘要
向室内引入新风是解决由装修材料加工工艺导致室内甲醛超标问题的根本方法之一。为了研究不同通风方法的有效性,本文利用Fluent软件,对自然通风和机械通风效果进行研究并分别分析不同送风口温度和不同送风速度对室内不同高度位置处的甲醛浓度的影响。模拟结果表明:自然通风工况下,不同送风温度下的甲醛浓度均超标,机械通风工况下,不同送风速度下的甲醛浓度均未超标;当进风口速度为2 m/s时,甲醛浓度最低;通过数值模拟,同一送风温度下,自然通风甲醛的浓度是机械通风的2.07倍。本文将模拟的2种工况在沈阳、营口进行实测,试验结果与模拟结果基本一致,进一步验证了该结论。
The introduction of fresh air into the room is one of the fundamental means to solve the problem of excessive formaldehyde which was caused by the decoration materials processing.In order to research the effectiveness of different kinds of ventilation methods,the formaldehyde concentration in different outlet temperature and different air supply rate on the concentration of formaldehyde in different height positions were analyzed with FEM(Finite Element Method)in the natural ventilation and mechanical ventilation conditions.The simulation results show that the formaldehyde concentration in different air supply temperature is exceeded in the natural ventilation situation.However,the concentration of formaldehyde in different air supply speed wasn’t exceeded standards in mechanical ventilation situations.The lowest concentration of formaldehyde was obtained in the condition of v=2m/s.The concentration of formaldehyde in the natural ventilation situation was2.07times greater than that in the mechanical ventilation in the same inlet air temperature.Two kinds of working conditions were tested in Shenyang and Yingkou,the experiment was agree with the simulation results basically,validated the conclusion further.
作者
冯国会
姜编
黄凯良
张亿先
杨雪
FENG guo-hui;JIANG bian;HUANG Kai-liang;ZHANG yi-xian;YANG xue(Shenyang Architecture University ,Shenyang 110168,China)
出处
《流体机械》
CSCD
北大核心
2017年第11期79-84,共6页
Fluid Machinery
基金
国家十三五重点研发计划项目(2016YFC0700501-02)
关键词
自然通风
机械通风
甲醛浓度
Fluent数值模拟
natural ventilation
mechanical ventilation
formaldehyde concentration
numerical simulation of Fluent
