标准摘要
[中文适用范围]： 适用于玻璃、镀膜玻璃和在远红外波长范围内不透明的材料。 给出计算玻璃中心区域热透射率的基本规则（不包括边缘效应）。 这些规则旨在根据 U 值估算建筑物中玻璃的热损失，并与建筑物不透明元件的热损失一起用于确定供暖或制冷设备的容量。 此外，用于其他目的的U值（例如玻璃表面的凝结、通过玻璃的季节性热损失）可以使用相同的程序来计算。 [外文原描述]： Applies to glass, coated glass and materials opaque in the far infrared wavelengths. Gives the fundamental rules for calculating the thermal transmittance in the glazing central area (edge effects are not included). The rules are intended to enable the heat loss through glazing in a building to be estimated from the U values and, together with heat losses through the opaque elements of the building, are used to determine the capacity of the heating or cooling plant. In addition, U values for other purposes (e.g. condensation on glazing surfaces, seasonal heat loss through glazing) can be calculated using the same procedure.
英文名称Glass in building — Determination of thermal transmittance (U value) — Calculation method