ISO 10211:2017规定了热桥的三维和二维几何模型的规范，用于热桥的数值计算 -热流，以评估建筑物或其部分的整体热损失，以及 -最低表面温度，以评估表面冷凝的风险。 这些规范包括模型的几何边界和细分、热边界条件以及要使用的热值和关系。 ISO 10211:2017基于以下假设: -所有物理性质与温度无关； -建筑构件内没有热源。 ISO 10211:2017还可用于推导线性和点热传导率以及表面温度系数。 注:引言中的表1显示了ISO 10211:2017在ISO 52000-1规定的模块化结构背景下在EPB标准集内的相对位置。

ISO 10211:2017 sets out the specifications for a three-dimensional and a two-dimensional geometrical model of a thermal bridge for the numerical calculation of - heat flows, in order to assess the overall heat loss from a building or part of it, and - minimum surface temperatures, in order to assess the risk of surface condensation. These specifications include the geometrical boundaries and subdivisions of the model, the thermal boundary conditions, and the thermal values and relationships to be used. ISO 10211:2017 is based upon the following assumptions: - all physical properties are independent of temperature; - there are no heat sources within the building element. ISO 10211:2017 can also be used for the derivation of linear and point thermal transmittances and of surface temperature factors. NOTE Table 1 in the Introduction shows the relative position of ISO 10211:2017 within the set of EPB standards in the context of the modular structure as set out in ISO 52000-1.