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太陽能建筑非均勻節(jié)能構(gòu)造及熱環(huán)境分析

發(fā)布時間:2018-06-16 03:21

  本文選題:太陽能建筑 + 室外綜合溫度; 參考:《西安理工大學(xué)》2017年碩士論文


【摘要】:目前全球能源形式嚴(yán)峻,而我國太陽能資源豐富,發(fā)展利用太陽能對我國可持續(xù)發(fā)展具有重要的現(xiàn)實意義,尤其對于建筑節(jié)能意義重大。太陽能建筑可以有效利用太陽能來降低建筑能耗,與此同時還可以通過優(yōu)化太陽能建筑構(gòu)造來改善室內(nèi)熱環(huán)境。太陽能建筑受室外太陽輻射強度影響,不同地區(qū)太陽輻射強度不同,而太陽輻射受太陽方位角和太陽高度角的影響,所以圍護結(jié)構(gòu)的室外綜合溫度與朝向密切相關(guān)。本文基于外擾朝向差異,根據(jù)我國建筑氣候特點,分別選取了被動式太陽能采暖氣候分區(qū):最佳氣候A區(qū)、適宜氣候A區(qū)、適宜氣候C區(qū)的代表地區(qū):拉薩、中衛(wèi)和西安(年累計太陽輻射分別為:7138MJ/m~2、5853MJ/m~2、4406MJ/m~2 ),通過現(xiàn)場調(diào)研測試,結(jié)合各地區(qū)當(dāng)?shù)剞r(nóng)村居住建筑構(gòu)造特點與農(nóng)民居住生活習(xí)慣,對建筑進行功能分區(qū)與室內(nèi)熱環(huán)境分區(qū)設(shè)計。然后利用非均勻節(jié)能構(gòu)造設(shè)計原理,通過理論分析及軟件模擬,對基于外擾朝向差異下的太陽能建筑圍護結(jié)構(gòu)構(gòu)造體系進行了詳細(xì)的研究分析。本論文研究得到的主要成果為:(1)根據(jù)中衛(wèi)和拉薩地區(qū)室內(nèi)熱環(huán)境測試結(jié)果,發(fā)現(xiàn)當(dāng)?shù)囟臼覂?nèi)熱環(huán)境較差,均未達到規(guī)范標(biāo)準(zhǔn);根據(jù)中衛(wèi)地區(qū)的實地調(diào)研結(jié)果,發(fā)現(xiàn)當(dāng)?shù)鼐幼≌邔κ覂?nèi)熱環(huán)境滿意度較差,對于改善冬季室內(nèi)熱環(huán)境有著強烈愿望;計算了西安、中衛(wèi)、拉薩地區(qū)冬至日的室外綜合溫度;確定采暖期室內(nèi)熱舒適指標(biāo)為:南向非邊側(cè)房間平均溫度不低于14℃,晝夜溫差不大于6℃;北向非邊側(cè)房間平均溫度不低于8℃,晝夜溫差不大于6℃;南北外墻壁面溫度差不大于4℃。(2)在實地調(diào)研與文獻分析的基礎(chǔ)上為三個地區(qū)總結(jié)抽象出一個既有建筑模型,并在此基礎(chǔ)上優(yōu)化改造出一個典型建筑模型;根據(jù)非均勻節(jié)能構(gòu)造原理計算三個地區(qū)的非均勻傳熱系數(shù),確定以KS*= 1.34KE*=1.35KW* =1.49KN*作為典型建筑模型的外墻構(gòu)造選擇基準(zhǔn);根據(jù)穩(wěn)態(tài)方法計算了典型建筑模型和既有建筑模型在冬至日的傳熱耗熱量,結(jié)果表明西安、中衛(wèi)、拉薩地區(qū)4mm普通塑鋼中空玻璃的南向窗戶均為得熱構(gòu)件,其中拉薩地區(qū)得熱量最大,中衛(wèi)次之,西安最小;相比單玻鋁合金外窗,拉薩地區(qū)南向單位面積外窗可節(jié)能71.43W/m~2,中衛(wèi)地區(qū)可節(jié)能80.59W/m~2,西安地區(qū)可節(jié)能64.36 W/m~2。典型建筑模型采用粉煤灰蒸養(yǎng)磚時整個建筑耗熱量僅為既有建筑模型的37.1% (西安)、34.1% (中衛(wèi))、27.9% (拉薩);使用粉煤灰燒結(jié)磚時典型建筑的耗熱量僅為既有建筑的34.5% (西安)、31.5% (中衛(wèi))、24.9% (拉薩)。(3)通過DesignBuilder軟件計算典型建筑模型的室內(nèi)空氣溫度,發(fā)現(xiàn)南向房間溫度均比北向房間溫度高;典型建筑模型的主臥空氣溫度相對既有建筑模型有明顯提高,其提升值:西安為4℃左右、中衛(wèi)為5℃左右、拉薩為5℃左右。對于主臥和客廳等南向房間,典型建筑的室內(nèi)空氣溫度相比既有建筑有明顯提高;而對于儲物間等北向房間,拉薩地區(qū)典型建筑的室內(nèi)空氣溫度相比既有建筑略有降低,中衛(wèi)和西安地區(qū)典型建筑的室內(nèi)空氣溫度相比既有建筑略有升高。這種主要使用房間溫度的明顯提高和次要使用房間溫度的基本不變,達到了本文建筑模型熱環(huán)境分區(qū)的目的。
[Abstract]:At present, the global energy forms are severe, and the solar energy resources are rich in our country. The development and utilization of solar energy has important practical significance for the sustainable development of our country, especially for building energy conservation. Solar buildings can effectively use the solar energy to reduce the energy consumption of the building, and the solar building can be improved by optimizing the solar building structure to improve the energy consumption. Indoor thermal environment. Solar energy buildings are affected by the outdoor solar radiation intensity, and the solar radiation intensity is different in different regions. The solar radiation is influenced by the azimuth and solar altitude angle of the sun, so the outdoor comprehensive temperature of the enclosure structure is closely related to the orientation. The passive solar heating climate zone: the best climate A area, suitable climate A area, suitable climate C area representative area: Lhasa, central Wei and Xi'an (annual cumulative solar radiation is respectively: 7138MJ/m~25853MJ/m~24406MJ/m~2), through field investigation and testing, combined with local rural residential construction characteristics and farmers living habits, The function zoning and indoor thermal environment zoning are designed. Then, using the principle of non uniform energy saving structure design, through theoretical analysis and software simulation, the structure system of solar building enclosure structure based on external disturbance orientation is studied and analyzed in detail. The main achievements of this paper are as follows: (1) according to the central defense and the central defense. The indoor thermal environment test results of Lhasa area found that the local winter indoor thermal environment was poor and did not reach the standard standard. According to the field survey results in the middle Wei area, it was found that the local residents were less satisfied with the indoor thermal environment and had a strong desire to improve the indoor thermal environment in winter, and the winter solstice in Xi'an, central and Lhasa areas were calculated. The indoor thermal comfort index is determined as: the indoor thermal comfort index of the heating period is that the average temperature of the south to non side room is not less than 14 C, the temperature difference of the day and night is not more than 6 degrees C, the average temperature of the north side room is not less than 8 C, the temperature difference of the day and night is not more than 6, and the difference of the wall temperature difference between the north and the south is not more than 4. (2) three on the basis of field investigation and literature analysis In this area, an existing building model is abstracted, and a typical building model is optimized on this basis. The non uniform heat transfer coefficient of three regions is calculated according to the principle of non-uniform energy saving structure, and the selection of KS*= 1.34KE*=1.35KW* =1.49KN* as a typical building model is determined; and the calculation is based on the steady state method. The heat transfer heat consumption of the typical building model and the existing building model in winter solstice shows that the south windows of the 4mm ordinary plastic steel hollow glass in the Xi'an, middle Wei and Lhasa area are all hot components, of which the Lhasa area has the highest heat, the middle guard, the smallest in Xi'an, and the outer window of the single glass aluminum alloy, and the outer window of the southern unit area of the Lhasa area. Energy saving 71.43W/m~2, central Wei area can save energy 80.59W/m~2, Xi'an area can save energy 64.36 W/m~2. typical building model using fly ash steam curing brick, the whole building consumption is only 37.1% of the existing building model (Xi'an), 34.1% (middle guard), 27.9% (Lhasa); when using powder coal ash sintered brick, the heat consumption of typical building is only 34.5% of the existing building. Xi'an), 31.5% (central guard), 24.9% (Lhasa). (3) the indoor air temperature of the typical building model is calculated by DesignBuilder software. It is found that the temperature of the south room is higher than that of the north room. The main air temperature of the typical building model is significantly higher than that of the existing building model, and its lifting value is about 4 C in Xi'an and around 5 in the center guard. The room air temperature in the typical building is significantly higher than that of the existing buildings in the southern room, such as the main bedroom and the living room, and the indoor air temperature of the typical buildings in the Lhasa area is slightly lower than that of the existing buildings, and the indoor air temperature of the typical buildings in the middle and Xi'an areas is compared with the indoor air temperature in the central and Xi'an areas. There is a slight increase in the building. The main use of the room temperature and the temperature of the secondary room are basically unchanged, and the purpose of this building model thermal environment partition is achieved.
【學(xué)位授予單位】:西安理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TU111

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