本文關(guān)鍵詞：三層玻璃相變窗的動(dòng)態(tài)傳熱性能研究與能耗分析　出處：《東南大學(xué)》2016年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 相變材料 過(guò)熱風(fēng)險(xiǎn) 三層玻璃窗 動(dòng)態(tài)傳熱性能 全年能耗

【摘要】：建筑節(jié)能對(duì)全社會(huì)節(jié)能減排的實(shí)現(xiàn)至關(guān)重要,提高窗體的保溫隔熱性能是實(shí)現(xiàn)建筑節(jié)能的重要途徑。相變窗利用相變材料提高窗體的熱容,能夠調(diào)節(jié)空調(diào)及供暖負(fù)荷。然而隨著對(duì)雙層玻璃相變窗越來(lái)越多的研究發(fā)現(xiàn)雖然其具備上述優(yōu)勢(shì),也顯現(xiàn)一些問(wèn)題,包括夏季白天發(fā)生的過(guò)熱風(fēng)險(xiǎn)、夜晚會(huì)向室內(nèi)產(chǎn)生不必要放熱及整體導(dǎo)熱系數(shù)大引起的冬季供暖負(fù)荷增加等。為解決上述問(wèn)題,本文在雙層玻璃相變窗的基礎(chǔ)上,基于填充相同質(zhì)量相變材料的標(biāo)準(zhǔn),提出一種室外側(cè)玻璃夾層含相變材料、室內(nèi)側(cè)玻璃夾層含空氣的三層玻璃相變窗,通過(guò)實(shí)驗(yàn)和數(shù)值模擬具體研究了其動(dòng)態(tài)傳熱特性,在實(shí)驗(yàn)和模擬的基礎(chǔ)上,利用能耗軟件對(duì)其進(jìn)行了能耗分析。為了突出三層玻璃相變窗解決上述問(wèn)題的能力,兩個(gè)對(duì)照組玻璃窗(雙層玻璃相變窗與三層玻璃中空窗)的相關(guān)研究也同時(shí)進(jìn)行。首先,搭建了三層玻璃相變窗與對(duì)照組玻璃窗的動(dòng)態(tài)傳熱性能對(duì)比裝置,通過(guò)實(shí)驗(yàn)得到三種窗體在夏季工況下的內(nèi)壁面溫度及熱流變化情況。結(jié)果表明：三層玻璃相變窗在夏季工況下起到良好的減緩室內(nèi)氣溫波動(dòng)和節(jié)省空調(diào)能耗的作用。夏季晴天時(shí),三層玻璃相變窗相比于雙層玻璃相變窗和三層玻璃中空窗,內(nèi)壁面峰值溫度分別降低2.7℃和5.5℃,抑制了過(guò)熱風(fēng)險(xiǎn)的發(fā)生,峰值溫度延遲效果較好,通過(guò)窗體傳入室內(nèi)的熱量分別降低16.6%和28%,夜間相變材料釋能階段,其內(nèi)壁面逐時(shí)溫度和熱流相比于雙層玻璃相變窗顯著降低,減小了相變材料向室內(nèi)的不必要散熱量。夏季陰雨天時(shí),三層玻璃相變窗內(nèi)壁面峰值溫度有所降低,延遲峰值溫度效果不佳,通過(guò)其進(jìn)入室內(nèi)的熱量相比于雙層玻璃相變窗顯著降低,相比于三層玻璃中空窗只有少許增加。其次,為了針對(duì)多種典型天氣工況研究三層玻璃相變窗的動(dòng)態(tài)傳熱性能,彌補(bǔ)實(shí)驗(yàn)條件的不足,建立該窗體和對(duì)照組玻璃窗的數(shù)值模型,對(duì)三種窗體在夏熱冬冷地區(qū)冬夏典型天氣條件下的動(dòng)態(tài)傳熱性能進(jìn)行對(duì)比分析。FLUENT模擬結(jié)果表明,三層玻璃相變窗能兼顧夏季隔熱和冬季保溫,維持室內(nèi)的熱舒適性。典型夏季工況下,三層玻璃相變窗能夠降低內(nèi)壁面峰值溫度,避免過(guò)熱風(fēng)險(xiǎn),減緩內(nèi)壁面溫度波動(dòng),減少通過(guò)其傳入室內(nèi)的熱量,節(jié)約空調(diào)能耗。典型冬季工況下,三層玻璃相變窗內(nèi)壁面峰值溫度延遲效果顯著,相比于雙層玻璃相變窗,其內(nèi)壁面溫度的波動(dòng)幅度顯著減小,夜間流向室外的內(nèi)壁面逐時(shí)熱流顯著減小,節(jié)約供暖能耗；相比于三層玻璃中空窗,內(nèi)壁面最低溫度有所降低,流向室外的內(nèi)壁面逐時(shí)熱流只有少量增加(尤其在夜間),內(nèi)壁面溫度晴天和陰天的衰減效果不一。在此基礎(chǔ)上,模擬研究了相變材料層的位置對(duì)三層玻璃相變窗的影響,得到在夏季典型晴天工況下相變材料層的較優(yōu)位置。最后,為了研究三層玻璃相變窗相對(duì)于兩個(gè)對(duì)照組玻璃窗對(duì)建筑全年能耗的影響,本文利用能耗模擬軟件eQUEST計(jì)算了夏熱冬冷地區(qū)某住宅分別采用上述三種窗體時(shí)的全年能耗變化情況。結(jié)果表明：在夏熱冬冷地區(qū),建筑物采用三層玻璃相變窗相比于采用三層玻璃中空窗和雙層玻璃相變窗,夏季供冷能耗分別降低9.45%和3.06%,冬季供暖能耗分別增加9.5%和降低18.33%,全年能耗分別降低4.55%和8.16%。三層玻璃相變窗能兼顧冬季保溫和夏季隔熱,在夏熱冬冷地區(qū)使用該窗體有較大的節(jié)能潛力。
[Abstract]:It is important to realize the building energy efficiency of the whole society of energy saving and emission reduction, improve the form of the heat insulation performance is an important way to realize the transformation of the building energy saving. The use of phase change materials to improve the form of the window heat capacity, can adjust the air conditioning and heating load. With the research on the double glass transition window more and more found that although it has the above advantages, also appeared some the problem, including the risk of overheating in summer during the day, night to produce unnecessary heat and indoor thermal conductivity coefficient caused by the heating load in winter increased. In order to solve the above problems, based on the double glass transition window, filled with the same quality of phase change materials based on standard, proposed an outdoor side glass sandwich with phase change materials, three layers of glass transition window glass interlayer containing air indoor side, by experiment and numerical simulation of specific studies the dynamic characteristics of heat transfer in solid Based on the simulation and experiment, it analyses the energy consumption of energy consumption software. In order to highlight the ability of three layers of glass transition window to solve the above problems, the two control group (double glazing window glass transition and three layers of glass hollow window) related research at the same time. First, build the three layers of glass transition the control window and the dynamic heat transfer performance comparison device of glass window, get the wall temperature and heat flux changes of three kinds of forms in summer conditions through experiments. The results show that the three layer glass transition window has good slow indoor temperature fluctuation and air conditioning energy saving effect in summer conditions. In summer, three compared to the double layer glass transition window glass transition window and three layers of glass hollow window, the inner surface of the peak temperature decreased by 2.7 degrees and 5.5 degrees, to curb the overheating risk, the peak temperature of the delay effect is good, by The form into the indoor heat is reduced by 16.6% and 28% respectively, the night phase change material release stage, the inner surface of the hourly temperature and heat flux compared to the double glass window phase decreased significantly, reduce unnecessary indoor heat dissipation to the phase change material quantity. The summer rainy days, three layers of glass transition window wall peak temperature decreased. Delay the peak temperature effect is poor, compared the heat into the room in a double glass transition window was significantly reduced, compared to the three layers of glass hollow window only slightly increased. Secondly, in order to study the typical weather condition of various dynamic heat transfer performance of three layers of glass transition window, make up for lack of experimental conditions, the numerical model is established for the form and control group of glass windows were analyzed,.FLUENT simulation results show that the dynamic heat transfer performance of three kinds of forms in the summer and winter in hot summer and cold winter area under typical weather conditions, three layers of glass Phase change window can take into account the summer heat and winter heat preservation, maintain indoor thermal comfort. The typical summer conditions, three layers of glass transition window can reduce the peak temperature of the inner wall, to avoid the risk of overheating, slow down the wall temperature fluctuation, by reducing its incoming indoor heat, energy saving air-conditioning. The typical winter conditions, three layers of glass phase change window wall peak temperature delay significantly, compared to the double glass window transformation, the fluctuation of the temperature of the inner wall surface heat flux decreased significantly, significantly reduced the inner surface of the night to the outdoor hourly, save heating energy consumption; compared to the three layers of glass hollow window, the inner surface of the lowest temperature decreased, the inner surface of the flow of outdoor only a small increase in hourly heat flux (especially at night), the attenuation effect of inner wall temperature in sunny and cloudy or not. On this basis, the simulation of the phase change material layer of three layers of glass Effect of phase window, get better position the phase change material layer is a typical clear day in summer conditions. Finally, in order to study the phase transition of three layers of glass window relative to the control group two window effect on building annual energy consumption, the energy simulation software eQUEST annual energy consumption changes in hot summer and cold winter region residential respectively by the three when a form is calculated. The results show that: in the hot summer and cold winter, the building adopts three layers of glass transition window compared to using three layers of glass windows and double hollow glass transition window, summer cooling energy consumption decreased by 9.45% and 3.06% respectively, the winter heating energy consumption increased by 9.5% and decreased by 18.33%, the annual energy consumption decreased by 4.55% and 8.16%. three the glass transition layer window can both winter and summer heat preservation and heat insulation, have great potential of energy saving in the form of hot summer and cold winter area.

【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：TU228;TB34

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