BS ISO 50046:2019规定了计算预测节能（PRE）的一般方法，使用基于测量的计算方法，也称为自下而上或基于能源性能改进措施（EPIAs）的方法（见ISO 17742）。基于指标的方法（见ISO 17742）和基于总消耗量的方法（见ISO 50047）不包括在本文件的范围内。交叉引用:EN 15459:2007ISO 50001:2018ISO 50002:2014ISO 50006:2014ISO 17743:2016ISO 17742:2015ISO/IEC 13273-1:2015ISO 17741:2016ISO 50047:2016ISO 50015:2014CWA 15693ISO/TS 50008购买本文件时提供的所有当前修订均包括在内。

BS ISO 50046:2019 specifies general methods for the calculation of predicted energy savings (PrES), using measure-based calculation methods, also known as bottom-up or energy performance improvement actions (EPIAs)-based methods (see ISO 17742). Indicator-based methods (see ISO 17742) and total-consumption-based methods (see ISO 50047) are not included in the scope of this document.Cross References:EN 15459:2007ISO 50001:2018ISO 50002:2014ISO 50006:2014ISO 17743:2016ISO 17742:2015ISO/IEC 13273-1:2015ISO 17741:2016ISO 50047:2016ISO 50015:2014CWA 15693ISO/TS 50008All current amendments available at time of purchase are included with the purchase of this document.