【摘要】：面對(duì)目前全球能源日益緊張、人居環(huán)境日益惡化的現(xiàn)狀，全世界都在開展節(jié)約能源的相關(guān)研究工作。相關(guān)研究表明，實(shí)現(xiàn)建筑節(jié)能的有效技術(shù)措施之一是圍護(hù)結(jié)構(gòu)的保溫隔熱性能，而墻體材料的的熱工性能又與圍護(hù)結(jié)構(gòu)的保溫隔熱息息相關(guān)。陜南地區(qū)頁巖資源豐富，當(dāng)?shù)貕w材料就地取材，以燒結(jié)頁巖多孔磚和空心磚為主，但是當(dāng)?shù)仨搸r磚的熱工性能及其應(yīng)用沒有相關(guān)研究資料，其保溫隔熱性能還有沒有可以改善的空間，目前的圍護(hù)結(jié)構(gòu)構(gòu)造是否滿足相關(guān)要求，針對(duì)以上問題，本文作以下研究： 首先利用Ansys軟件的fluent模塊，結(jié)合空氣間層傳熱特點(diǎn)，研究孔洞長寬比、孔排數(shù)和列數(shù)、排列方式等因素與頁巖磚導(dǎo)熱系數(shù)的關(guān)系，研究結(jié)果表明：增加矩型孔洞孔長寬比會(huì)提高多孔磚的保溫效果；提高孔洞率、增加孔的排列數(shù)及孔肋延長線系數(shù)，多孔磚的導(dǎo)熱系數(shù)都有不同程度的提高。市場上240mm115mm 90mm多孔磚模擬分析當(dāng)量導(dǎo)熱系數(shù)為0.46W/(m·K)，優(yōu)化設(shè)計(jì)后的多孔磚模擬分析的當(dāng)量導(dǎo)熱系數(shù)為0.43W/(m·K)，與市場多孔磚相比，，降低約6％。 實(shí)驗(yàn)表明，對(duì)頁巖空心磚孔壁涂低輻射材料和填充保溫材料后，可降低磚體的當(dāng)量導(dǎo)熱系數(shù)。前者當(dāng)量導(dǎo)熱系數(shù)為0.50W/(m·K)，降低13.7%；后者當(dāng)量導(dǎo)熱系數(shù)為0.425W/(m·K)，降低26.7%。 論文選取陜南地區(qū)典型居住建筑為研究對(duì)象，結(jié)合實(shí)驗(yàn)結(jié)果，依據(jù)陜南地區(qū)氣候特征，建立模擬計(jì)算模型，然后運(yùn)用DeST-h軟件模擬計(jì)算相同外墻構(gòu)造下，不同外墻傳熱系數(shù)對(duì)建筑負(fù)荷的影響，提出外墻構(gòu)造優(yōu)化方案。 通過軟件模擬和實(shí)驗(yàn)等方法，本文對(duì)陜南地區(qū)居住建筑墻體材料熱工性能及其應(yīng)用有了較為深入的認(rèn)識(shí)，并探索提高其保溫隔熱性能，論文的研究對(duì)頁巖磚的推廣及建筑節(jié)能具有一定的理論價(jià)值和現(xiàn)實(shí)意義。
[Abstract]:In the face of the global energy shortage and the worsening of the living environment, the research on energy conservation is being carried out all over the world. Related studies show that one of the effective technical measures for building energy saving is the thermal insulation performance of the envelope structure, and the thermal properties of the wall materials are closely related to the thermal insulation of the envelope structure. The area of southern Shaanxi is rich in shale resources, and the local wall materials are based on local materials, mainly sintered shale porous brick and hollow brick. However, there is no relevant research data on the thermal properties and application of local shale brick. In view of the above problems, this paper makes the following research: firstly, using the fluent module of Ansys software, there is no room for improvement of its thermal insulation performance, and whether the current structure of the enclosure structure meets the relevant requirements. Based on the heat transfer characteristics of the air interlayer, the relationship between the length to width ratio, the number of holes, the number of holes and the arrangement mode and the thermal conductivity of shale brick is studied. The results show that increasing the ratio of length to width of rectangular hole can improve the thermal insulation effect of porous brick. The thermal conductivity of porous brick can be improved in different degree by increasing the porosity, increasing the number of holes arranged and the coefficient of the lengthening line of the hole rib. The equivalent thermal conductivity of 240mm115mm 90mm porous brick is that of 0.46W/ (m K), optimized design. The equivalent thermal conductivity of the simulation analysis of porous brick with 0.46W/ (m K), is about 6% lower than that of porous brick in market. The experimental results show that the equivalent thermal conductivity of the shale hollow brick can be reduced by coating the hole wall with low radiation material and filling the insulating material. In the former, the equivalent thermal conductivity was reduced by 13.7% for 0.50W/ (m K), while the equivalent coefficient of thermal conductivity in the latter was reduced by 26.7g for 0.425W/ (m K),. In this paper, the typical residential buildings in southern Shaanxi are selected as the research objects, and according to the climate characteristics of the southern Shaanxi region, the simulation calculation model is established, and then the DeST-h software is used to simulate and calculate the same exterior wall structure. The influence of different external wall heat transfer coefficient on building load is put forward. By means of software simulation and experiment, this paper has a deeper understanding of the thermal properties and its application of wall materials for residential buildings in southern Shaanxi, and explores how to improve its thermal insulation performance. The research of this paper has certain theoretical value and practical significance for the promotion of shale brick and building energy conservation.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU502;TU111

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李臨平;吳志根;李增耀;何雅玲;陶文銓;;粘土空心磚結(jié)構(gòu)優(yōu)化的數(shù)值模擬[J];工程熱物理學(xué)報(bào);2008年05期

2 徐凌,張鈞;頁巖多孔磚多層節(jié)能住宅體系應(yīng)用[J];國外建材科技;2005年01期

3 趙亞丁,張寶生,葛勇;造孔料的選擇與燒結(jié)磚微孔坯體性能的關(guān)系[J];哈爾濱建筑大學(xué)學(xué)報(bào);1998年02期

4 劉軼;;陶�；炷炼嗫状u及其熱工性能的研究[J];混凝土;2011年09期

5 李建成;混凝土空心砌塊的孔型對(duì)其隔熱性能的影響[J];混凝土與水泥制品;1995年05期

6 馬保國;王耀城;穆松;袁龍;呂陽;;不同成孔機(jī)理造孔劑對(duì)粉煤灰頁巖燒結(jié)制品性能影響[J];中國建材科技;2009年03期

7 范軍;胡玉秋;張玉穩(wěn);劉福勝;;秸稈壓縮塊插孔纖維混凝土空心砌塊墻體保溫性能試驗(yàn)研究[J];節(jié)能;2010年03期

8 閆成文;姚健;林云;;夏熱冬冷地區(qū)基礎(chǔ)住宅圍護(hù)結(jié)構(gòu)能耗比例研究[J];建筑技術(shù);2006年10期

9 張?jiān)?何嘉鵬;;節(jié)能空心砌塊選型的正交綜合分析[J];建筑技術(shù);2009年04期

10 欒偉,何嘉鵬,杜塏;節(jié)能墻體空心砌塊熱阻特性的研究[J];南京工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版);2003年05期

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