建筑物的热性能.地面传热.计算方法

[中文适用范围]： 本文件提供了与地面热接触的建筑构件的传热系数和热流率的计算方法，包括底层楼板、悬浮楼板和地下室。 它适用于建筑物围墙水平面以下的建筑构件或其一部分，位于内部地板表面的水平，对于底层楼板、悬挂地板和不供暖的地下室；在某些情况下，外部尺寸系统定义楼板下表面处的边界。 — 在外部地面水平，用于加热地下室。 本文件包括传热稳态部分（年平均热流率）和由于温度的年周期性变化部分（热流率关于年平均的季节变化）的计算。 这些季节性变化是按月获得的，除了适用于附件 D 中的动态模拟程序外，本文件不适用于较短的时间段。 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 13370:2017 provides methods of calculation of heat transfer coefficients and heat flow rates for building elements in thermal contact with the ground, including slab‐on‐ground floors, suspended floors and basements. It applies to building elements, or parts of them, below a horizontal plane in the bounding walls of the building situated - at the level of the inside floor surface, for slab‐on‐ground floors, suspended floors and unheated basements; NOTE 1 In some cases, external dimension systems define the boundary at the lower surface of the floor slab. - at the level of the external ground surface, for heated basements. ISO 13370:2017 includes calculation of the steady‐state part of the heat transfer (the annual average rate of heat flow) and the part due to annual periodic variations in temperature (the seasonal variations of the heat flow rate about the annual average). These seasonal variations are obtained on a monthly basis and, except for the application to dynamic simulation programmes in Annex D, ISO 13370:2017 does not apply to shorter periods of time. NOTE 2 Table 1 in the Introduction shows the relative position of ISO 13370:2017 within the set of EPB standards in the context of the modular structure as set out in ISO 52000-1.