基于U-wert模拟的建筑表皮绿化隔热性能分析方法构建

Method for Analyzing Insulation Performance of Building Facade Greening Based on U-wert Simulation

建筑表皮绿化是建筑生态化的重要形式,也是建筑节能的重要手段。目前对建筑表皮绿化隔热性能局限于定性描述和物理实验,对于数值模拟的量化方法相对较少,探索对建筑表皮绿化隔热性能建立一种数值化的分析方法。研究基于U-wert模拟技术,以德国维斯玛大学绿墙改造项目为例,从变量控制、参数设定、微观模型进行分析方法的构建,最终通过对热导系数定量计算的方法得出,建筑的表皮绿化可以提高外墙18.2%的隔热性能。通过利用U-wert技术数值模拟的构建,为更好地分析建筑表皮绿化的隔热性能提供了一种有效的定量方法和实验手段。

The greening facade of building is not only an important form of architectural ecology,but also crucial means of building energy saving. At present,the research on thermal insulation performance of building facade is limited to qualitative description and physical experiment. The quantitative method of numerical simulation is relatively less. Therefore,this paper aims to explore a numerical analysis method for the thermal insulation performance of building facade greening. The research taking the project Building Facade Reconstruction of University of Wismar,G ermany as a case study,based on the U-wert simulation technique,analyzes the method by variable control,parameter setting and microscopic model.Finally,through the method of quantitative calculation of thermal conductivity coefficient,get the result that greening facade of building can improve the external wall 18. 2% of the insulation performance.Through the numerical simulation of U-wert technology,this paper provides an effective quantitative method and experimental method for the better analysis of the thermal insulation performance of greening facade of building.