摘要
结构性热桥的线传热系数ψ是在建筑热工设计中的一个关键参数,但设计规范对其阐述较为概括,因此,有必要对其做进一步解析,方能使工程师或研究人员更深刻地理解其内涵。结合相关规范标准,采用计算机节能设计软件分析模拟,对线传热系数取值的算法及其合理性进行探讨。选取一个实际工程案例,通过对比窗洞口以及外墙空调机搁板两种主要线性热桥的取值变化,发现对于具有大量线性热桥的建筑,线传热系数的微小改变将对建筑的整体能耗产生不可忽视的影响,进而展示了该系数在建筑热工设计中所起到的重要作用,为工程设计中正确拟定线传热系数ψ的取值提供有价值的参考和借鉴。
Linear heat transfer coefficient of structural thermal bridge⁃ψ is a key parameter in the building thermal design,but the design specifications provide a more general explanation about it.Therefore,it is necessary to further analyzeψso that engineers or researchers can understand its connotation more deeply.Combining with relevant codes and standards,the computer energy⁃saving design software is utilized to analyze and simulate the algorithm and rationality of the value of the linear heat transfer coefficient.A practical project case is analyzed.By comparing the value changes of the two main linear heat bridges,the window opening and the outer wall air conditioner shelf,it is found that for buildings with a large number of linear heat bridges,the slight change of the linear heat transfer coefficient will have a negligible influence on the overall energy consumption of the building,so the coefficient in the thermal design of the building is crucial.The linear heat transfer coefficient in the engineering designψis drawn up.Correctly determining the linear heat transfer coefficient ψ will provide valuable reference for engineering design.
作者
易嘉
YI Jia(Landsea Planning and Architectural Design(Shanghai)Co.Ltd.,Shanghai 200092,China)
出处
《建筑节能（中英文）》
CAS
2024年第2期58-64,共7页
Building Energy Efficiency
关键词
热桥
线传热系数
工程设计
thermal bridge
linear thermal transfer coefficient
engineering design
