外墻外保溫系統(tǒng)保溫模擬與工藝研究
發(fā)布時間：2018-08-02 19:05
【摘要】：隨著能源枯竭嚴(yán)重，節(jié)能減排成為我國近幾年來的工作重心。我國建筑行業(yè)的總能耗占到所有能耗的27%，因此節(jié)能減排成為我國建筑行業(yè)的重要問題，而由于外墻保溫系統(tǒng)不合理導(dǎo)致的能源浪費(fèi)在建筑能耗中占到很大一部分。但是我國在外墻保溫系統(tǒng)中又面臨一個重要問題：近年來我國火災(zāi)頻頻發(fā)生，其中由外墻保溫系統(tǒng)而引起的火災(zāi)所占的比例在逐步上升，如何解決這一難題成為眾多學(xué)者的研究課題。外墻外保溫系統(tǒng)保溫性與防火性能是本文研究的主要內(nèi)容。 首先總結(jié)和分析了國內(nèi)外外墻保溫系統(tǒng)的發(fā)展現(xiàn)狀，并將歐美等國的外保溫材料與我國的進(jìn)行對比，并且根據(jù)我國不同類型建筑能量消耗比例圖我們得出大力推廣新型材料在外保溫系統(tǒng)中的應(yīng)用是很有必要的。同時，總結(jié)國內(nèi)外的文獻(xiàn)我們發(fā)現(xiàn)在我國發(fā)生的多起大型火災(zāi)中，多數(shù)是由于保溫材料系統(tǒng)不合格引起的，因此筆者提出應(yīng)該并重外保溫系統(tǒng)的保溫性能和防火性能 對我國常見的集中外墻保溫系統(tǒng)的保溫性和防火性進(jìn)行有限元模擬，結(jié)果顯示：筑物外墻保溫系統(tǒng)中應(yīng)該優(yōu)先使用導(dǎo)熱系數(shù)小于0.05的材料；保溫層厚度在0mm-150mm之間時，，保溫層厚度的增加對于系統(tǒng)的保溫性能影響很大，當(dāng)保溫層厚度超過150mm時，保溫層厚度對于系統(tǒng)的保溫特性影響很��；同時以相同保溫材料為主的保溫系統(tǒng)的保溫特性很接近，二者之間的保溫差別主要有構(gòu)造措施決定。研究發(fā)現(xiàn)以苯板為主要隔熱層的保溫系統(tǒng)防火性能要明顯低于以巖棉和玻璃棉為主要保溫材料的保溫系統(tǒng)，因此我們得出在外墻保溫系統(tǒng)中應(yīng)該選擇巖棉以及玻璃棉作為主要保溫材料。 最后對于我國現(xiàn)有的新型外墻保溫系統(tǒng)的施工方法進(jìn)行了總結(jié)分析，可供施工技術(shù)人員參考。
[Abstract]:With the serious depletion of energy, energy conservation and emission reduction has become the focus of our work in recent years. The total energy consumption of the construction industry in China accounts for 27% of all the energy consumption, so energy saving and emission reduction has become an important problem in the construction industry, and the energy waste caused by the unreasonable external wall insulation system accounts for a large part of the building energy consumption. However, China is faced with an important problem in the external wall insulation system: in recent years, fire occurred frequently in our country, in which the proportion of fire caused by the external wall insulation system is gradually rising. How to solve this problem has become a research topic for many scholars. The main content of this paper is the thermal insulation and fire resistance of exterior wall thermal insulation system. Firstly, the development status of external wall insulation system at home and abroad is summarized and analyzed, and the external insulation materials in Europe and America are compared with those in China. According to the scale diagram of energy consumption of different types of buildings in our country, it is necessary to popularize the application of new type materials in external thermal insulation system. At the same time, summing up the literature at home and abroad, we found that in many large fires in China, most of them were caused by the failure of the insulation material system. Therefore, the author puts forward that we should pay equal attention to the thermal insulation performance and fire resistance of the external insulation system, and simulate the thermal insulation and fire resistance of the common centralized external wall insulation system in China by finite element method. The results show that the material whose thermal conductivity is less than 0. 05 should be used in the thermal insulation system of building wall, and when the thickness of insulation layer is between 0mm-150mm, the increase of insulation layer thickness has great influence on the thermal insulation performance of the system, when the thickness of insulation layer exceeds 150mm, The thickness of the insulation layer has little effect on the thermal insulation characteristics of the system, and the thermal insulation characteristics of the same thermal insulation system are very similar, and the difference between the two systems is mainly determined by the structural measures. It was found that the fire resistance of the thermal insulation system with benzene plate as the main insulation layer was significantly lower than that with rock wool and glass cotton as the main insulation materials. Therefore, we conclude that rock wool and glass wool should be selected as the main insulation materials in the exterior wall insulation system. Finally, the construction methods of new type external wall insulation system in China are summarized and analyzed, which can be used as reference for construction technicians.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU761.12
本文編號：2160430
[Abstract]:With the serious depletion of energy, energy conservation and emission reduction has become the focus of our work in recent years. The total energy consumption of the construction industry in China accounts for 27% of all the energy consumption, so energy saving and emission reduction has become an important problem in the construction industry, and the energy waste caused by the unreasonable external wall insulation system accounts for a large part of the building energy consumption. However, China is faced with an important problem in the external wall insulation system: in recent years, fire occurred frequently in our country, in which the proportion of fire caused by the external wall insulation system is gradually rising. How to solve this problem has become a research topic for many scholars. The main content of this paper is the thermal insulation and fire resistance of exterior wall thermal insulation system. Firstly, the development status of external wall insulation system at home and abroad is summarized and analyzed, and the external insulation materials in Europe and America are compared with those in China. According to the scale diagram of energy consumption of different types of buildings in our country, it is necessary to popularize the application of new type materials in external thermal insulation system. At the same time, summing up the literature at home and abroad, we found that in many large fires in China, most of them were caused by the failure of the insulation material system. Therefore, the author puts forward that we should pay equal attention to the thermal insulation performance and fire resistance of the external insulation system, and simulate the thermal insulation and fire resistance of the common centralized external wall insulation system in China by finite element method. The results show that the material whose thermal conductivity is less than 0. 05 should be used in the thermal insulation system of building wall, and when the thickness of insulation layer is between 0mm-150mm, the increase of insulation layer thickness has great influence on the thermal insulation performance of the system, when the thickness of insulation layer exceeds 150mm, The thickness of the insulation layer has little effect on the thermal insulation characteristics of the system, and the thermal insulation characteristics of the same thermal insulation system are very similar, and the difference between the two systems is mainly determined by the structural measures. It was found that the fire resistance of the thermal insulation system with benzene plate as the main insulation layer was significantly lower than that with rock wool and glass cotton as the main insulation materials. Therefore, we conclude that rock wool and glass wool should be selected as the main insulation materials in the exterior wall insulation system. Finally, the construction methods of new type external wall insulation system in China are summarized and analyzed, which can be used as reference for construction technicians.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU761.12
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本文編號：2160430
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