半透明單晶硅光伏玻璃在建筑中應用的綜合能耗研究
發(fā)布時間:2018-05-15 02:30
本文選題:半透明光伏玻璃 + 建筑因素; 參考:《華中科技大學》2015年碩士論文
【摘要】:在當前節(jié)能與推動可持續(xù)能源利用已成為社會共識的時代背景下,光伏建筑以正成為綠色生態(tài)建筑中頗具發(fā)展?jié)摿Φ姆种。在光伏建筑迅猛發(fā)展的態(tài)勢下,半透明光伏玻璃的出現(xiàn)是光伏建筑大步向前發(fā)展的新生且重要的契機,其半透明性可以滿足建筑采光、取景的需求,半透明性也意味著其與建筑因素的結合更為緊密,陽光的進入通過半透明光伏玻璃進入室內將影響到包括采光、制冷及采暖的能耗。對于半透明光伏玻璃,如何優(yōu)化其設計,尤其是其透光率的優(yōu)化設計對于光伏建筑的綜合能耗表現(xiàn)有著較為關鍵的影響。本研究關注半透明光伏玻璃在建筑中的應用問題,研究其在不同建筑因素下的建筑綜合能耗表現(xiàn),并將其與傳統(tǒng)玻璃進行能耗對比研究,從綜合能耗角度分析半透明光伏玻璃在不同建筑因素下代替?zhèn)鹘y(tǒng)玻璃的可能性,探索并總結其不同建筑因素的優(yōu)化設計策略。本研究主要采用實驗結合模擬的方法,通過建立半透明光伏玻璃的計算模型,然后采用實際氣象條件下的實驗實測驗證計算算法,最后將計算模型結合電腦模擬(EnergyPlus)進行不同建筑因素的設置,將不同電池覆蓋率(PVR)的半透明光伏玻璃置于不同建筑因素下進行測試、分析與論證,并與傳統(tǒng)玻璃進行對比,得出其建筑綜合能耗情況與規(guī)律。研究發(fā)現(xiàn),從綜合節(jié)能角度而言,半透明光伏玻璃的電池覆蓋率(PVR)在不同建筑條件下所導致的建筑綜合能耗截然不同,在不同的建筑因素組合下,恰當的PVR取值將可以實現(xiàn)光伏玻璃綜合節(jié)能的最大效益。隨著半透明單晶硅PVR上升,光電轉化率下降,PV發(fā)電量上升,照明能耗上升,空調能耗(制冷+采暖)下降。窗墻比和房間進深對于光伏玻璃的能耗表現(xiàn)具有很大的影響,光伏玻璃的性能分析必須給予一定的窗墻比和房間進深條件下才具有意義。我們選取了三種較為典型的傳統(tǒng)玻璃與半透明光伏玻璃進行綜合能耗的對比,在各種PVR下,單晶硅光伏玻璃的綜合節(jié)能性能都優(yōu)于單層玻璃和雙層中空玻璃,其綜合節(jié)能性能表現(xiàn)優(yōu)于單層玻璃和一般的雙層中空玻璃,但略遜于Low-E玻璃。本研究從設計策略與經驗角度,總結了以下幾個重要的結論。PVR值較高(50%-80%)的單晶硅光伏玻璃,較為適合窗墻比較大(0.5)的建筑空間;也較為適合進深較小(7m)的建筑空間;PVR值較低(10%-50%)的單晶硅光伏玻璃,較為適合窗墻比較小(0.2 0.5)和進深較大(≥7m)的建筑空間。房間進深較小(6m)時,光伏玻璃比《公共建筑節(jié)能設計標準》的能耗要求更為節(jié)能。窗墻比較小(0.35)時,光伏玻璃比《公共建筑節(jié)能設計標準》的能耗要求更為節(jié)能。這些結論在實際工程應用中可以起到較為重要的參考和借鑒的價值與作用。
[Abstract]:At present, energy saving and promoting sustainable energy use have become the social consensus, photovoltaic building is becoming a promising branch of green ecological architecture. With the rapid development of photovoltaic buildings, the appearance of translucent photovoltaic glass is a new and important opportunity for the development of photovoltaic buildings. Translucency also means that it is more closely associated with building factors, and the entry of sunlight through translucent photovoltaic glass will affect energy consumption, including lighting, cooling and heating. For translucent photovoltaic glass, how to optimize its design, especially the optimal design of its transmittance has a more critical impact on the performance of the comprehensive energy consumption of photovoltaic buildings. This study focuses on the application of translucent photovoltaic glass in buildings, studies the performance of building energy consumption under different building factors, and compares its energy consumption with that of traditional glass. The possibility of replacing traditional glass with translucent photovoltaic glass under different building factors is analyzed from the angle of comprehensive energy consumption, and the optimal design strategy of different building factors is explored and summarized. This research mainly adopts the method of experiment and simulation, establishes the calculation model of translucent photovoltaic glass, and then uses the actual meteorological conditions to verify the calculation algorithm. Finally, the calculation model is combined with computer simulation to set up different building factors. The translucent photovoltaic glass with different cell coverage (PVR) is tested, analyzed and demonstrated under different building factors, and compared with traditional glass. The comprehensive energy consumption of the building is obtained. It is found that, from the perspective of comprehensive energy saving, the cell coverage ratio of translucent photovoltaic glass (PVR) under different building conditions is very different. Appropriate PVR value can realize the maximum benefit of photovoltaic glass comprehensive energy saving. With the increase of semitransparent monocrystalline silicon (PVR), the photoelectric conversion rate decreases and the PV energy generation increases, the lighting energy consumption increases, and the air conditioning energy consumption (refrigeration heating) decreases. The ratio of window to wall and the depth of room have great influence on the energy consumption performance of photovoltaic glass. The performance analysis of photovoltaic glass must give a certain ratio of window to wall and the depth of room. We choose three typical traditional glass and translucent photovoltaic glass to compare the comprehensive energy consumption. Under various PVR, the comprehensive energy saving performance of monocrystalline silicon photovoltaic glass is better than that of single layer glass and double layer hollow glass. Its comprehensive energy saving performance is better than that of single layer glass and common double layer hollow glass, but it is inferior to Low-E glass. From the point of view of design strategy and experience, this study summarizes the following important conclusions. PVR value is higher than 50% -80% of the monocrystalline silicon photovoltaic glass, which is more suitable for the building space with larger window wall than 0.5). The monocrystalline silicon photovoltaic glass with a lower PVR value of 10% -50 m is more suitable for the building space with a smaller window wall of 0.2 m) and a greater depth of depth (鈮,
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