遮阳随机调节模式及对室内光热环境影响

发布时间：2018-01-13 12:48

本文关键词：遮阳随机调节模式及对室内光热环境影响　出处：《天津大学》2014年博士论文　论文类型：学位论文

【摘要】：在各项建筑节能技术措施中,活动遮阳对降低建筑能耗、改善室内光热舒适度具有重要作用。目前国内建筑活动遮阳控制方式仍以手动调节为主,由于人体控制遮阳调节的行为受主客观各种因素影响具有随机不确定性,因此,研究活动遮阳随机调节模式对于客观准确分析其节能效果和室内光热舒适改善具有重要意义。本文选择夏热冬冷地区宁波的一典型办公建筑为研究对象,通过室外温度、太阳辐射和遮阳状态等实际测试及非线性回归方法,将遮阳调节状态分为遮挡窗户面积的0%,25%,50%,75%,100%五种进行累积比数Logit分析,确定了太阳辐射是遮阳调节行为的驱动主因。利用马尔科夫链方法,建立了基于实测遮阳行为调节模式的随机模型。采用建筑性能整合分析平台(BCVTB),构建了活动遮阳随机调节性能分析模型,并首次实现了与建筑性能模拟分析软件Energyplus的耦合计算。根据上述建立的模型,对典型办公建筑不同朝向窗户的节能和光热效果进行分析。不仅从基础室温、太阳辐射透过量、能耗等常规指标作了比较,并引入考虑太阳辐射对人体影响的室内热舒适改进指标PMVrad和PPDrad进行更为准确的分析。结果表明：活动外遮阳能获得最佳的能耗和室内热舒适环境,活动内遮阳与LOW-E中空玻璃窗相当,最差的是普通中空玻璃窗。室内热舒适的时间活动外遮阳要比LOW-E中空玻璃窗多6%-20.8%,比普通中空玻璃窗多20.5%-49.7%。根据不同主客观光环境评价指标的全面综合分析,活动遮阳对改善室内光环境效果也很显著：室内工作面适宜照度的时间活动内外遮阳要明显优于LOW-E中空玻璃窗(约是2-3倍),且照度波动也控制得比较好；在亮度方面,活动内外遮阳能较好地控制工作面与背景环境的亮度对比度。结合Radiance和Evalglare眩光分析软件,充分考虑人眼对光环境的自适应调节,从眩光指标DGI和DGP作进一步分析,统计计算表明活动内外遮阳基本上都优于LOW-E中空玻璃窗,并且活动外遮阳效果更显著,西向窗户工作时间眩光比LOW-E中空玻璃窗低约20%,东向和南向低约4%,并且减少约1／2到2/3的强眩光。
[Abstract]:In the construction of energy-saving technical measures in the activities, shadingtoreduce building energy consumption, improve indoor thermal comfort plays an important role. The current domestic construction activity is still to manually adjust the shading control mainly because of subjective and objective factors to control human behavior regulation effect with random shading uncertainty, therefore, research activity regulation mode for objective random shading the accurate analysis of the effect of energy saving and indoor thermal comfort improvement has important significance.
This paper selects a typical office building in hot summer and cold winter area of Ningbo as the research object, through the actual test of outdoor temperature, solar radiation and shading condition and nonlinear regression method, the state regulation is divided into sun shade windows area 0%, 25%, 50%, 75%, 100%, five cumulative odds Logit analysis, to determine the sun the main reason is the radiation driven sunshade to adjust behavior. Using the method of Markov chain, stochastic model was built based on the mode of regulating behavior of measured shading. The building performance analysis integration platform (BCVTB), established the analysis model of random adjusting performance of movable sunshade, and the first to achieve the building performance simulation calculation and coupling analysis software Energyplus.
According to the established model of a typical office building towards the window energy and thermal effect analysis. Not only from the basis of room temperature, the solar radiation flux, compared to conventional indicators of energy consumption, and considering solar radiation to human body thermal comfort improvement index PMVrad and PPDrad for more accurate analysis. The results showed that the activity of shading can obtain optimum energy consumption and indoor thermal comfort environment, activities in shading and LOW-E hollow glass window, the worst is the common hollow glass window. The indoor thermal comfort time shading than LOW-E hollow glass window 6%-20.8% more than ordinary insulating glass windows 20.5%-49.7%.
According to the comprehensive analysis of the tourism environment evaluation index of different subject activities, to improve the indoor light environment shading effect is also very obvious: indoor working face suitable illumination inside and outside shading was superior to that of the LOW-E hollow glass window of time (about 2-3 times), and the irradiance fluctuations also control better; in brightness, brightness contrast the activities of exterior shading can better control the working face and the background. The combination of Radiance and Evalglare glare analysis software, considering the adaptive regulation of human eye to light environment, further analysis from the glare index of DGI and DGP, statistical calculation showed that the activity of exterior shading basically is better than the LOW-E hollow glass window, and the movable exterior sunshade more obviously, West to the window working time is about 20% lower than the glare of LOW-E hollow glass windows, the East and south by about 4%, and reduce glare about 1 / 2 to 2/3.

【学位授予单位】：天津大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TU226;TU111

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