本文選題：新外保溫結(jié)構(gòu)　切入點(diǎn)：透濕性能　出處：《南京航空航天大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：本文從外墻外保溫系統(tǒng)構(gòu)造出發(fā)，綜述國(guó)內(nèi)外現(xiàn)有的各種外墻外保溫結(jié)構(gòu)體系，總結(jié)國(guó)內(nèi)外針對(duì)外墻外保溫結(jié)構(gòu)的熱濕傳遞所使用的研究方法。通過(guò)數(shù)值模擬比較分析熱濕氣候條件下典型外墻外保溫結(jié)構(gòu)的瞬態(tài)熱流密度、傳熱系數(shù)及平均濕含量，在此基礎(chǔ)上提出新型外保溫系統(tǒng)結(jié)構(gòu)并對(duì)其進(jìn)行保溫性能和透濕性能的研究，并分析不同基層墻體材料和防水材料對(duì)新墻體結(jié)構(gòu)傳熱系數(shù)的影響，該結(jié)果對(duì)建筑外墻外保溫系統(tǒng)中材料的選擇具有重要的參考價(jià)值。 利用有限容積法求解一維非穩(wěn)態(tài)熱濕耦合方程，運(yùn)用Matlab進(jìn)行程序編制，，結(jié)合南京實(shí)際氣象參數(shù)，求解典型的冬冷夏熱氣候條件下墻體溫度場(chǎng)、濕度場(chǎng)以及傳熱系數(shù)，并將數(shù)值計(jì)算結(jié)果與軟件模擬結(jié)果進(jìn)行對(duì)比。針對(duì)新外保溫系統(tǒng)進(jìn)行了結(jié)構(gòu)耐候性實(shí)驗(yàn)和傳熱系數(shù)測(cè)試，實(shí)驗(yàn)結(jié)果表明外保溫系統(tǒng)結(jié)構(gòu)滿足耐候性要求，也表明外保溫系統(tǒng)構(gòu)造與材料的選擇比較合理。數(shù)值模擬與小型防火實(shí)驗(yàn)相結(jié)合驗(yàn)證了增設(shè)防火隔離帶能有效延緩火焰蔓延并減少室內(nèi)二氧化碳的產(chǎn)生。
[Abstract]:Starting from the construction of exterior wall thermal insulation system, this paper summarizes all kinds of existing exterior wall thermal insulation structures at home and abroad. This paper summarizes the research methods used at home and abroad for heat and humidity transfer of exterior wall thermal insulation structure. The transient heat flux, heat transfer coefficient and average moisture content of typical external wall thermal insulation structures under the condition of thermal and humid climate are compared and analyzed by numerical simulation. On this basis, a new type of external insulation system structure is proposed, and the thermal insulation and moisture permeability of the new wall structure are studied, and the influence of different base course wall materials and waterproof materials on the heat transfer coefficient of the new wall structure is analyzed. The results have important reference value for the selection of materials in the external insulation system of building exterior wall. The finite volume method is used to solve the one-dimensional unsteady-state thermal-moisture coupling equation, and the Matlab program is used to program the wall temperature field, humidity field and heat transfer coefficient under typical winter, cold and summer hot weather conditions combined with the actual meteorological parameters in Nanjing. The results of numerical calculation and software simulation are compared. The structure weather resistance and heat transfer coefficient of the new external insulation system are tested. The experimental results show that the structure of the external thermal insulation system meets the requirements of weather resistance. It also shows that the structure and material selection of the external thermal insulation system is reasonable. The numerical simulation and the small fire prevention experiments show that the addition of the anti-fire isolation belt can effectively delay the flame spread and reduce the indoor carbon dioxide generation.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU761.12

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