装修板材用量对室内甲醛浓度影响研究

发布时间：2018-02-02 15:48

本文关键词： 甲醛装修材料散发模型 CFD 数值模拟　出处：《青岛理工大学》2010年硕士论文　论文类型：学位论文

【摘要】：随着公众生活水平的提高和家居用品的多样化,装修、家具、电磁辐射已成为室内重要污染源。其中,以装修材料、家具产生的污染物对人的危害最严重。室内空气质量的优劣,关系到人民群众的身心健康,很大程度上,也关系到人民群众的生活质量。2001年11月,建设部和国家质量监督检疫总局联合发布了《民用建筑工程室内环境污染控制规范》。其虽然对装修材料有害物含量、装修材料的选择、施工过程、验收等进行了规定,但装修时即使使用的是符合有害物质限量标准的室内装饰装修材料,如果用量过大也会造成室内有害物超标。对家居装修产生的室内有害物进行总量控制是控制室内污染的最有效措施。总量控制的原则是家居装修需要从装修材料选择与装修材料的用量控制、装修方案优化、施工工艺等各个环节对室内有害物进行总量控制。装修材料的用量控制是室内甲醛总量控制中的一个环节,本文主要研究装修材料用量对室内甲醛浓度的影响。首先根据现有板材甲醛散发模型计算得到所用装修板材的甲醛散发率。然后分三种工况分别运用CFD仿真计算。首先是房间在新装修后自然通风状态下,分三种工况分别研究板材的使用面积对房间内甲醛分布的影响,并利用三次样条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。初步得出随着板材使用面积的增加,房间内甲醛浓度达标所用的时间也越长。其次研究了在通风达标后对房间密闭12h三种工况下房间的甲醛浓度情况。密闭房间内室内气流稳定,污染物的浓度差引起空气的自然对流,室内污染物由污染源逐渐向房间各处扩散,并利用三次样条插值求出在房间密闭12h时刻,板材不同的使用面积下所对应的甲醛浓度。根据《民用建筑工程室内环境污染控制规范》GB50325(2006年版)规定的甲醛的最高室内允许浓度为目标,分析装修材料的合理用量。本文通过研究得到装修材料的用量与室内的空气中甲醛浓度的关系,对室内污染物总量控制的研究及指导实际装修时避免室内甲醛浓度超标具有一定的参考价值。
[Abstract]:With the improvement of public living standards and the diversification of household supplies, decoration, furniture, electromagnetic radiation has become an important source of indoor pollution. Among them, to decorate materials. The pollution produced by furniture is the most serious harm to people. The quality of indoor air is related to the physical and mental health of the people, and to a large extent, to the quality of life of the people. November 2001. The Ministry of Construction and the State General Administration of quality Supervision and Quarantine jointly issued the Indoor Environmental pollution Control Code for Civil Building Engineering. Although it is harmful to decoration materials, selection of decoration materials, construction process. Acceptance and acceptance of the provisions, but decoration even if the use of harmful substances in accordance with the limited number of indoor decoration materials. If the dosage is too large, it will cause the indoor harmful substances to exceed the standard. It is the most effective measure to control indoor pollution to control the total amount of the indoor harmful matter produced by the household decoration. The principle of the total quantity control is that the home decoration needs from the decoration material. Select and control the amount of decoration materials. Decoration program optimization, construction technology and other links to indoor total control of harmful substances. The quantity control of decoration material is one of the links in indoor formaldehyde total control. This paper mainly studies the effect of decoration material dosage on indoor formaldehyde concentration. Firstly, according to the existing formaldehyde emission model of sheet metal, the formaldehyde emission rate of decoration plate is calculated. Then, CFD simulation is used in three working conditions. Calculation. First of all, under the condition of natural ventilation after the new decoration, the effect of using area of the plate on the formaldehyde distribution in the room is studied in three working conditions, and the cubic spline interpolation is used to calculate the various use areas of the plate. The time of natural ventilation when the formaldehyde concentration in the room is up to the standard. The preliminary conclusion is that with the increase of the use area of the plate. The longer it takes to reach the standard of formaldehyde concentration in the room, the more time it takes. Secondly, the formaldehyde concentration in the room under the three working conditions of sealing the room for 12 hours after the ventilation standard is studied. The airflow in the closed room is stable. The concentration difference of pollutants caused the natural convection of air, the indoor pollutants gradually diffused from the source of pollution to the room, and the cubic spline interpolation was used to calculate the time of 12 hours in the room airtight. Formaldehyde concentrations corresponding to different serving areas of plates-according to the code for indoor environmental pollution control in civil building engineering GB50325 (2006). The maximum allowable indoor concentration of formaldehyde is the target. Analyze the reasonable dosage of decoration materials. The relationship between the amount of decoration materials and the concentration of formaldehyde in indoor air was obtained. It is valuable to study the total amount of indoor pollutants and to guide the decoration to avoid the indoor formaldehyde concentration exceeding the standard.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2010
【分类号】：X51

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