摘要
电致变色(EC)玻璃窗的调控方法对其节能效果有重要影响。为平衡夏季建筑热、光环境对EC玻璃窗的需求矛盾,实现降低能耗和营造舒适环境目标,本文以北京某办公室为例,以市场销售的基于室外水平照度控制的EC玻璃窗为研究对象,采用模拟研究方法,研究控制阈值对建筑能耗的影响规律,提出EC控制阈值优化方法。研究结果表明,随着EC玻璃窗照度控制阈值的减小,透过玻璃的太阳辐射得热减小,房间照明能耗增大,空调能耗和总能耗呈现先减小后增大的趋势;阈值优化为不同EC玻璃窗控制参数阈值的选取提供了科学方法,在南向、东向和西向相比普通玻璃窗分别减小总能耗22.7%、24.9%和28.7%。本文研究可为EC玻璃窗在我国的节能应用提供参考。
The control method of electrochromic(EC)windows has an important impact on building energy efficiency.In order to balance the demand for heat and light environments of buildings in summer to achieve the goal of reducing energy consumption and creating a comfortable environment.,this paper takes an office in Beijing as an example,using outdoor horizontal illumination as the control parameter of EC to study the influence of control threshold on energy consumption;Taking the minimum building energy consumption as the optimization objective,the control threshold of EC window is optimized.The results show that with the reduction of control threshold value,a decrease in solar radiation heat gain can be observed with the increase of lighting energy consumption,and air conditioning energy consumption and total energy consumption show a upward tendency before the subsequent decline.As can be seen,the threshold optimization method is effective.The total energy consumption is reduced by 22.7%,24.9%and 28.7%in south,east and west directions,respectively,compared with the ordinary glass window.This paper develops a simple and effective method for optimizing the control of EC windows,which provides a reference for the application of EC windows in China.
作者
戚皓然
孙育英
王伟
徐文静
薛鹏
QI Haoran;SUN Yuying;WANG Wei;XU Wenjing;XUE Peng(Beijing Key Laboratory of green built environment and energy efficient technology,Beijing University of Technology,Beijing 100124,China)
出处
《建筑科学》
CSCD
北大核心
2019年第4期70-75,共6页
Building Science
基金
国家重点研发计划项目"公共机构高效用能系统及智能调控技术研发与示范"(2016YFB06017)
国家自然科学基金项目"新型电致变色玻璃窗对建筑光热环境影响机理及其调控方法研究"(51778009)
关键词
电致变色玻璃窗
调控方法
阈值优化
能耗模拟
建筑节能
EC windows
control strategy
threshold optimization
energy simulation
building energy saving
