ICS27.010CCSF01DB11北京市地方标准DB11/T2177—2023能源计量器具配备和管理规范地源热泵系统Specificationforequippingandmanagingofthemeasuringinstrumentofenergyground-sourceheatpumpsystem2023-12-25发布2024-04-01实施北京市市场监督管理局发布DB11/T2177—2023I目次前言...........................................................................II1范围.................................