本欧洲标准是一套标准的一部分，涵盖了系统能源需求计算方法和建筑物供热系统的系统效率。特别是这个标准是处理家用热水系统的一些标准之一。 这个具体部分的范围是规范计算方法: - 家用热水系统的热损失; - 家用热水发电系统空间供热的可回收热损失; - 家用热水发电系统的辅助能源。 这些值是根据prEN 15603和.的计算总能量使用的输入数据 EN 15316-1。 本欧洲标准规定: - 输入; - 计算方法; 输出

This European Standard is part of a set of standards covering the methods for calculation of system energy requirements and system efficiencies of heating systems in buildings. In particular this standard is one of a number of standards dealing with domestic hot water systems. The scope of this specific part is to standardise the methods for calculation of: - thermal losses from the domestic hot water generation system; - recoverable thermal losses for space heating from the domestic hot water generation system; - auxiliary energy of the domestic hot water generation systems. These values are input data for calculation of the overall energy use according to prEN 15603 and EN 15316-1. This European Standard specifies the: - inputs; - calculation methods; outputs