居住建筑外遮陽及空調(diào)負(fù)荷分析
本文關(guān)鍵詞:居住建筑外遮陽及空調(diào)負(fù)荷分析 出處:《華中科技大學(xué)》2013年碩士論文 論文類型:學(xué)位論文
更多相關(guān)文章: 夏熱冬冷地區(qū) 居住建筑 外遮陽 空調(diào)負(fù)荷分析
【摘要】:我國大多數(shù)居住建筑屬于高能耗建筑,浪費嚴(yán)重。夏熱冬冷地區(qū)由于其氣候特點導(dǎo)致該地區(qū)的空調(diào)能耗很高,因此分析該地區(qū)的空調(diào)負(fù)荷,以及在此基礎(chǔ)上提出合理改進措施顯得尤為重要。 本文首先選取武漢地區(qū)典型高層居住建筑,根據(jù)相關(guān)標(biāo)準(zhǔn)對圍護結(jié)構(gòu)參數(shù)的限值確定參考建筑,,計算得到其空調(diào)及采暖負(fù)荷變化規(guī)律以及年用電量作為圍護結(jié)構(gòu)及外遮陽改進的參考依據(jù)。 太陽輻射是外圍護結(jié)構(gòu),尤其外窗得熱的重要影響因素,本文對武漢地區(qū)建筑各個朝向太陽輻射量做了詳細(xì)研究,在此基礎(chǔ)上,對常見水平式遮陽及垂直式遮陽效果進行分析,根據(jù)不同遮陽形式的橫向?qū)Ρ妊芯,提出最佳遮陽方式及具體尺寸。論文采用EnergyPlus負(fù)荷計算軟件,采取控制單一熱源對室內(nèi)負(fù)荷的影響計算的方法,對參考建筑的空調(diào)負(fù)荷的各個構(gòu)成部分:外墻、各朝向外窗、內(nèi)墻、人員、燈光設(shè)備、新風(fēng)進行了全年以及典型設(shè)計日的冷熱負(fù)荷進行詳細(xì)計算分析。同時,對外墻、屋頂進行不同程度的保溫措施,以及不同形式的外窗的節(jié)能效果及經(jīng)濟性進行分析。 研究結(jié)果表明武漢地區(qū)全年太陽累計輻射量東向最大、南向西向次之、北向最小。水平式遮陽效果優(yōu)于垂直式,且水平式南向遮陽效果最好;東向、西向其次;北向效果最差。南向水平遮陽板出挑長度800mm最佳。外墻和屋頂推薦傳熱系數(shù)分別為0.372W/(m~2·K)和0.358W/(m~2·K),外窗選用高性能Low-E鍍膜玻璃。
[Abstract]:Most residential buildings in China belong to high energy consumption buildings, which are very wasteful. Because of its climatic characteristics, air conditioning energy consumption in this area is very high, so the air conditioning load in this area is analyzed. And on this basis, it is particularly important to put forward reasonable improvement measures. This paper first selects the typical high-rise residential buildings in Wuhan area, and determines the reference building according to the limit value of the parameters of the enclosure structure according to the relevant standards. The change law of air conditioning and heating load and the annual electricity consumption are calculated as the reference basis for the envelope structure and the improvement of the external shading. Solar radiation is an important factor of the outer envelope structure, especially the heat of the outer window. This paper makes a detailed study on the solar radiation of buildings in Wuhan area towards the sun, and on this basis. The effects of horizontal shading and vertical shading were analyzed and compared according to different shading patterns. The optimal shading method and its specific size are put forward. The method of controlling the influence of single heat source on indoor load is adopted in this paper by using EnergyPlus load calculation software. The components of air conditioning load of reference buildings are calculated and analyzed in detail, such as external wall, facing window, inner wall, personnel, lighting equipment, fresh air and typical design day. At the same time. The energy saving effect and economy of exterior wall and roof are analyzed. The results show that the annual total solar radiation in Wuhan is the largest in the east direction, the second in the south direction, and the smallest in the north direction. The horizontal sunshade effect is better than the vertical one, and the horizontal south shading effect is the best. East, west, second; The north direction is the worst. The south horizontal shading board has the best length of 800 mm. The recommended heat transfer coefficient of exterior wall and roof are 0.372W / / m ~ (2 路K) and 0.358W / / m ~ (2 路K) respectively. High performance Low-E coated glass is used for exterior window.
【學(xué)位授予單位】:華中科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2013
【分類號】:TU111.4;TU831
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