【摘要】：本文選取石蠟類相變材料且以填充石蠟玻璃屋頂為研究對(duì)象,通過測(cè)量含石蠟玻璃圍護(hù)結(jié)構(gòu)透射光譜獲得石蠟光學(xué)物性,然后通過實(shí)驗(yàn)和模擬方法分析含石蠟玻璃屋頂結(jié)構(gòu)光熱性能、玻璃屋頂填充石蠟前后節(jié)能效果及其影響因素,最后基于測(cè)量的大慶地區(qū)氣候數(shù)據(jù)優(yōu)化了含石蠟玻璃屋頂結(jié)構(gòu)參數(shù)。主要的研究?jī)?nèi)容如下:1.設(shè)計(jì)了紫外分光光度計(jì)測(cè)試用恒溫加熱腔,通過數(shù)值模擬手段進(jìn)行了腔內(nèi)熱環(huán)境分析�；谧贤夥止夤舛扔�(jì)測(cè)量了40~80℃石蠟的透射光譜特性,通過雙厚度法反演得到石蠟的光學(xué)常數(shù),研究結(jié)果發(fā)現(xiàn)溫度對(duì)石蠟光學(xué)常數(shù)存在一定的影響且無明顯規(guī)律。2.設(shè)計(jì)了含石蠟玻璃結(jié)構(gòu)光熱性能實(shí)驗(yàn)裝置,測(cè)量分析了太陽輻射強(qiáng)度、石蠟厚度、石蠟相變溫度對(duì)含石蠟玻璃結(jié)構(gòu)光熱特性的影響,結(jié)果表明太陽輻射強(qiáng)度、石蠟厚度均對(duì)含石蠟玻璃結(jié)構(gòu)光熱性能影響大,但石蠟相變溫度對(duì)其影響較小。3.搭建了嚴(yán)寒地區(qū)含石蠟玻璃屋頂室外傳熱實(shí)驗(yàn)裝置,測(cè)量了大慶地區(qū)室外氣候參數(shù)、玻璃內(nèi)表面和實(shí)驗(yàn)箱內(nèi)溫度,分析了石蠟相變溫度、石蠟層厚度和屋頂坡度對(duì)含石蠟玻璃屋頂箱體內(nèi)熱環(huán)境的影響,實(shí)驗(yàn)發(fā)現(xiàn)石蠟相變溫度和屋頂坡度對(duì)室內(nèi)溫度及其峰值延遲均有一定的影響;雖然石蠟厚度對(duì)箱體內(nèi)溫度影響較大,但對(duì)溫度延遲作用較小。4.將介質(zhì)半透明輻射作為源項(xiàng)處理,采用凝固/融化模型處理相變傳熱,建立了含石蠟玻璃屋頂傳熱模型,基于Fluent軟件模擬含石蠟玻璃結(jié)構(gòu)傳熱特性,研究發(fā)現(xiàn)石蠟相變潛熱、吸收系數(shù)、石蠟層厚度、太陽輻射強(qiáng)度對(duì)含石蠟玻璃結(jié)構(gòu)傳熱特性的影響較大,而石蠟折射率、室外對(duì)流傳熱系數(shù)對(duì)其影響較小。5.將太陽能光熱傳輸單獨(dú)處理,采用顯示比熱容法處理相變傳熱,建立了含石蠟玻璃屋頂一維光熱傳輸模型,編寫了計(jì)算程序,研究了石蠟比熱、相變潛熱、融化溫度等參數(shù)的影響,研究發(fā)現(xiàn)大慶地區(qū)含石蠟玻璃屋頂厚度范圍推薦為:9~12 mm。本文的研究成果可為今后開發(fā)含相變材料玻璃屋頂技術(shù),及其嚴(yán)寒地區(qū)工程應(yīng)用提供一定的理論和數(shù)據(jù)支持。
[Abstract]:In this paper, paraffin phase change materials are selected and paraffin glass roof is used as the research object. The optical properties of paraffin wax are obtained by measuring the transmission spectrum of paraffin glass envelope. Then, the photothermal properties of paraffin glass roof structure, the energy saving effect of glass roof filled with paraffin wax and its influencing factors are analyzed by means of experiment and simulation. Finally, the structural parameters of paraffin glass roof are optimized based on the measured climate data in Daqing area. The main research contents are as follows: 1. A constant temperature heating cavity for ultraviolet spectrophotometer was designed and the thermal environment of the cavity was analyzed by means of numerical simulation. The transmission spectrum of paraffin wax at 4080 鈩，

本文編號(hào)：2371434