關(guān)于公共建筑圍護結(jié)構(gòu)節(jié)能設(shè)計的研究
發(fā)布時間:2018-01-19 14:39
本文關(guān)鍵詞: 建筑圍護結(jié)構(gòu) 建筑節(jié)能 能耗模擬 外墻傳熱系數(shù) 建筑窗墻比 出處:《遼寧工程技術(shù)大學(xué)》2013年碩士論文 論文類型:學(xué)位論文
【摘要】:一個國家儲備能源的多少,是衡量其國民經(jīng)濟發(fā)展的重要因素,同時它也制約著國民經(jīng)濟的發(fā)展。改革開放以來,建筑的能耗逐日增長,其速度已經(jīng)超過能源生產(chǎn)的速度。在建筑的使用過程中,如果能做好節(jié)能措施,將大幅度減少基礎(chǔ)能源的消耗,促進人類的可持續(xù)性發(fā)展。搞好建筑的節(jié)能工作,不僅能節(jié)約能源,促進經(jīng)濟發(fā)展,而且對促進大氣環(huán)境和室內(nèi)熱環(huán)境的改善,也有重要的意義。 本文介紹了建筑節(jié)能設(shè)計的幾種非穩(wěn)態(tài)傳熱分析方法、建筑能耗模擬軟件及能耗計算方法、建筑節(jié)能設(shè)計需遵循的設(shè)計原理,并重點對建筑外圍護結(jié)構(gòu)包括外墻、屋面、外窗三種結(jié)構(gòu)的節(jié)能技術(shù)措施進行了深入研究,通過熱工計算的方法研究熱橋、外墻構(gòu)造做法與外墻平均傳熱系數(shù)的關(guān)系,總結(jié)出窗墻比設(shè)置與外墻傳熱系數(shù)的關(guān)聯(lián)關(guān)系。同時,根據(jù)一實際工程項目,利用DEST能耗模擬軟件對不同工況條件下的建筑情況進行模擬,改進原有外墻和屋面方案,通過比較分析的方法分析不同外墻、屋面、外窗方案的優(yōu)缺點。 本文通過深入分析研究,利用熱工計算方法推導(dǎo)出外墻平均傳熱系數(shù)Km與熱橋平均傳熱系數(shù)與外墻主體傳熱系數(shù)之差△k的關(guān)系,得出外墻外保溫構(gòu)造做法的節(jié)能效果優(yōu)于內(nèi)保溫構(gòu)造做法的結(jié)論。建議規(guī)范中外墻傳熱系數(shù)應(yīng)與窗墻比相關(guān)聯(lián),以確保不同部位傳熱系數(shù)的設(shè)定值能滿足更高節(jié)能標(biāo)準。通過模擬總結(jié)出建筑窗墻比與建筑空調(diào)能耗的關(guān)系以及各圍護結(jié)構(gòu)對建筑整體能耗影響的比例順序。
[Abstract]:The amount of energy reserves in a country is an important factor to measure the development of its national economy. At the same time, it also restricts the development of the national economy. Since the reform and opening up, the energy consumption of buildings has been increasing day by day. Its speed has exceeded the speed of energy production. In the process of building use, if energy saving measures can be done, the consumption of basic energy will be greatly reduced. To promote the sustainable development of human beings and to save energy and promote economic development are not only of great significance to the improvement of atmospheric environment and indoor thermal environment, but also to the improvement of indoor thermal environment. This paper introduces several unsteady heat transfer analysis methods for building energy saving design, building energy consumption simulation software and energy consumption calculation method, and the design principles to be followed in building energy conservation design. In addition, the energy saving technology measures of exterior wall, roof and window are studied in detail, and the thermal bridge is studied by thermal calculation method. The relationship between the construction method of the exterior wall and the average heat transfer coefficient of the exterior wall is summarized, and the relationship between the setting of the window wall ratio and the heat transfer coefficient of the exterior wall is summarized. DEST energy consumption simulation software is used to simulate the building conditions under different working conditions, improve the original external wall and roof scheme, through comparative analysis of different external walls, roof. The advantages and disadvantages of the outer window scheme. In this paper, the relationship between the average heat transfer coefficient (km) of the external wall and the difference between the average heat transfer coefficient of the thermal bridge and the heat transfer coefficient of the main wall of the outer wall is derived by using the method of thermal calculation. It is concluded that the energy saving effect of exterior wall thermal insulation is better than that of internal insulation structure. It is suggested that the heat transfer coefficient of external wall should be related to the window wall ratio in the code. In order to ensure that the setting value of heat transfer coefficient of different parts can meet the higher energy saving standard, the relationship between building window wall ratio and building air conditioning energy consumption and the proportional order of the influence of each enclosure structure on the overall building energy consumption are summarized through simulation.
【學(xué)位授予單位】:遼寧工程技術(shù)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:TU111.4
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