装修板材用量与板材有害物含量对室内甲醛浓度影响研究
发布时间：2018-12-11 10:51
【摘要】：随着人民生活水平的提高和社会经济的快速发展，人们对工作和居室的生活环境越来越追求舒适化和高档化，室内装修成为一种新时尚。装修在使居室变得舒适与美观的同时，也给室内环境造成了污染，严重影响到人民的生活质量。其散发的污染物主要有甲醛、苯、氨和总挥发性有机化合物。其中，甲醛以其对人体毒害程度大、室内超标量高、在室内散发时间长，引起了国内外研究人员的共同关注。世界卫生组织(WHO)，美国国家科学院，国家研究理事会（NAS/NRC)等机构一直强调它们是一类重要的空气污染物，控制其浓度是提高室内环境质量的重要手段之一。 本文利用计算流体力学（CFD）方法，模拟了不同甲醛含量的两种板材分别在三种不同板材使用面积的情况下室内甲醛浓度的分布与变化情况。首先根据现有板材甲醛散发模型利用Matlab编程计算得到所用的两种装修板材的甲醛散发率。将计算得到的散发率编写用户自定义函数（即UDF），将其连接到Fluent中进行数值模拟。每个住宅的房间分三种工况，在不同的板材铺设面积下分别研究板材的使用面积对房间内甲醛分布的影响，同时研究了住宅一和住宅二在铺设不同的地板的情况下对房间内甲醛浓度的影响。并利用插值求出板材多种使用面积下，房间内甲醛浓度达标所要进行自然通风的时间。同时也列出在房间密闭条件下，单位空间甲醛散发材料表面积与房间甲醛浓度达标需对房间进行自然通风时间的对应关系。 最后将实际测试的值与在实验条件下模拟的数值进行对比并加以分析，二者数据结果基本吻合，其模拟结果真实的反映了实际工程中的甲醛浓度变化和分布。 本文通过研究不同板材用量与使用不同污染物含量的板材对室内甲醛浓度造成的影响，得出一些基本结论。初步得出：室内通风对室内甲醛污染扩散状态的影响比较大；同时随着铺设板材面积的增加，房间内甲醛浓度也成比例增加的；地板初始浓度越大，扩散系数越大时，，甲醛浓度越高，建材对室内空气品质的影响越大。为治理空气污染、调控室内空气质量提供了理论支持和科学依据，同时也针对不同的环境条件为居民判断装修后的合理入住时间提供了参考。
[Abstract]:With the improvement of people's living standard and the rapid development of social economy, people are more and more pursuing comfortable and high-grade living environment of work and living room. Interior decoration has become a new fashion. Decoration not only makes the bedroom comfortable and beautiful, but also pollutes the indoor environment, which seriously affects the quality of life of the people. The main pollutants emitted are formaldehyde, benzene, ammonia and total volatile organic compounds. Among them, formaldehyde has attracted the common attention of researchers at home and abroad because of its great toxicity to human body, high indoor superscalation and long time of indoor emission. The (WHO), National Academy of Sciences and the National Research Council (NAS/NRC) of the World Health Organization (WHO) have always emphasized that they are an important class of air pollutants and the control of their concentration is one of the important means to improve indoor environmental quality. In this paper, (CFD) method of computational fluid dynamics is used to simulate the distribution and change of indoor formaldehyde concentration of two kinds of plates with different formaldehyde content under the condition of three kinds of different plate area. Firstly, according to the existing formaldehyde emission model of sheet metal, the formaldehyde emission rate of two kinds of decoration plates was calculated by Matlab programming. The calculated emission rate is written as a user-defined function (that is, UDF), connects it to Fluent for numerical simulation. The room of each residence is divided into three working conditions. Under the different plank laying area, the influence of the use area of the plate on the formaldehyde distribution in the room is studied respectively. At the same time, the influence of the first and second residence on the formaldehyde concentration in the room was studied under the condition of different flooring. The time of natural ventilation for the formaldehyde concentration in the room was obtained by interpolation. At the same time, the relationship between the surface area of formaldehyde emission material per unit space and the room formaldehyde concentration standard need to be carried on the natural ventilation time of the room under the condition of the room airtight. Finally, the measured values are compared with the simulated values under the experimental conditions, and the two data are basically consistent. The simulation results reflect the change and distribution of formaldehyde concentration in the actual engineering. In this paper, some basic conclusions are obtained by studying the effect of different plate dosage and different pollutant content on indoor formaldehyde concentration. It is concluded that indoor ventilation has a great influence on indoor formaldehyde pollution and diffusion, and the formaldehyde concentration in the room increases proportionally with the increase of the area of laid sheet. The higher the initial concentration of floor, the greater the diffusion coefficient, the higher the concentration of formaldehyde, the greater the influence of building materials on indoor air quality. It provides theoretical support and scientific basis for controlling air pollution and regulating indoor air quality. It also provides a reference for residents to judge the reasonable occupancy time after decoration according to different environmental conditions.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TU834
本文编号：2372408
[Abstract]:With the improvement of people's living standard and the rapid development of social economy, people are more and more pursuing comfortable and high-grade living environment of work and living room. Interior decoration has become a new fashion. Decoration not only makes the bedroom comfortable and beautiful, but also pollutes the indoor environment, which seriously affects the quality of life of the people. The main pollutants emitted are formaldehyde, benzene, ammonia and total volatile organic compounds. Among them, formaldehyde has attracted the common attention of researchers at home and abroad because of its great toxicity to human body, high indoor superscalation and long time of indoor emission. The (WHO), National Academy of Sciences and the National Research Council (NAS/NRC) of the World Health Organization (WHO) have always emphasized that they are an important class of air pollutants and the control of their concentration is one of the important means to improve indoor environmental quality. In this paper, (CFD) method of computational fluid dynamics is used to simulate the distribution and change of indoor formaldehyde concentration of two kinds of plates with different formaldehyde content under the condition of three kinds of different plate area. Firstly, according to the existing formaldehyde emission model of sheet metal, the formaldehyde emission rate of two kinds of decoration plates was calculated by Matlab programming. The calculated emission rate is written as a user-defined function (that is, UDF), connects it to Fluent for numerical simulation. The room of each residence is divided into three working conditions. Under the different plank laying area, the influence of the use area of the plate on the formaldehyde distribution in the room is studied respectively. At the same time, the influence of the first and second residence on the formaldehyde concentration in the room was studied under the condition of different flooring. The time of natural ventilation for the formaldehyde concentration in the room was obtained by interpolation. At the same time, the relationship between the surface area of formaldehyde emission material per unit space and the room formaldehyde concentration standard need to be carried on the natural ventilation time of the room under the condition of the room airtight. Finally, the measured values are compared with the simulated values under the experimental conditions, and the two data are basically consistent. The simulation results reflect the change and distribution of formaldehyde concentration in the actual engineering. In this paper, some basic conclusions are obtained by studying the effect of different plate dosage and different pollutant content on indoor formaldehyde concentration. It is concluded that indoor ventilation has a great influence on indoor formaldehyde pollution and diffusion, and the formaldehyde concentration in the room increases proportionally with the increase of the area of laid sheet. The higher the initial concentration of floor, the greater the diffusion coefficient, the higher the concentration of formaldehyde, the greater the influence of building materials on indoor air quality. It provides theoretical support and scientific basis for controlling air pollution and regulating indoor air quality. It also provides a reference for residents to judge the reasonable occupancy time after decoration according to different environmental conditions.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TU834
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