幕墙的热力性能.热透射率的计算

[中文适用范围]： 本文件规定了计算由安装在或连接到框架中的玻璃和/或不透明面板组成的幕墙的热透射率的方法。 计算包括： ——不同类型的玻璃，例如玻璃或塑料；单层或多层玻璃；有或没有低辐射率涂层；具有充满空气或其他气体的空腔； ——有或没有热裂的框架（任何材料）； ——不同类型的不透明面板，覆盖有金属、玻璃、陶瓷或任何其他材料。 计算中包括玻璃区域、框架区域和面板区域之间的回折或连接处的热桥效应。 计算不包括： ——太阳辐射的影响； ——漏风引起的传热； ——凝结计算； ——百叶窗的影响； ——幕墙角落和边缘处的额外传热； ——与主建筑结构的连接或通过固定凸耳的连接； ——带集成供暖的幕墙系统。 注：引言中的表 1 显示了本文件在 ISO 52000-1 中规定的模块化结构的 EPB 标准集中的相对位置。 [外文原描述]： ISO 12631:2017 specifies a method for calculating the thermal transmittance of curtain walls consisting of glazed and/or opaque panels fitted in, or connected to, frames. The calculation includes: - different types of glazing, e.g. glass or plastic; single or multiple glazing; with or without low emissivity coating; with cavities filled with air or other gases; - frames (of any material) with or without thermal breaks; - different types of opaque panels clad with metal, glass, ceramics or any other material. Thermal bridge effects at the rebate or connection between the glazed area, the frame area and the panel area are included in the calculation. The calculation does not include: - effects of solar radiation; - heat transfer caused by air leakage; - calculation of condensation; - effect of shutters; - additional heat transfer at the corners and edges of the curtain walling; - connections to the main building structure nor through fixing lugs; - curtain wall systems with integrated heating. NOTE Table 1 in the Introduction shows the relative position of ISO 12631:2017 within the set of EPB standards in the context of the modular structure as set out in ISO 52000-1.