本欧洲标准描述了计算用于诸如能量计算，热和冷却负荷计算，夏季舒适度和室内空气质量评估等应用的建筑物的通风空气流量的方法。 通风和气密要求（如IAQ，供暖和制冷，安全，防火）不属于标准。 对于这些不同的应用，使用相同的迭代方法，但应根据应用领域选择输入参数。对于具体应用，本标准也定义了直接计算。根据规定的执行规则，也可以在国家一级采取简化的做法。 该方法适用于: - 机械通风建筑（机械排气，机械供应或平衡系统）。 - 被动导管。 - 机械和自然模式之间的混合系统切换。 - 通过手动操作打开窗户以进行播放或夏季舒适问题。 自动窗口（或开口）不在这里直接考虑。 行业过程通风不在范围之内。 烹饪的立即使用的厨房是标准的一部分（包括餐厅.） 其他厨房不属于标准。 该标准不是直接适用的f

This European Standard describes the method to calculate the ventilation air flow rates for buildings to be used for applications such as energy calculations, heat and cooling load calculation, summer comfort and indoor air quality evaluation. The ventilation and air tightness requirements (as IAQ, heating and cooling, safety, fire protection…) are not part of the standard. For these different applications, the same iterative method is used but the input parameter should be selected according to the field of application. For specific applications a direct calculation is also defined in this standard. A simplified approach is also allowed at national level following prescribed rules of implementation. The method is meant to be applied to: - Mechanically ventilated building (mechanical exhaust, mechanical supply or balanced system). - Passive ducts. - Hybrid system switching between mechanical and natural modes. - Windows opening by manual operation for airing or summer comfort issues. Automatic windows (or openings) are not directly considered here. Industry process ventilation is out of the scope. Kitchens where cooking is for immediate use are part of the standards (including restaurants.) Other kitchens are not part of the standard. The standard is not directly applicable for buildings higher than 100 m and rooms where vertical air temperature difference is higher than 15K. The results provided by the standard are the building envelope flows either through leakages or purpose provided openings and the air flows due to the ventilation system, taking into account the product and system characteristics.