针对当代建筑配套机电工程规模日益扩大而出现的能耗过大等问题,为实现建筑节能总体目标,本文从构成建筑配套机电工程的各个系统入手,分别阐述不同系统的节能方法。 Aiming at the problem of over-large energy consumption caused by the increasing scale of contemporary building mechanical and electrical engineering, in order to achieve the overall goal of building energy efficiency, this paper starts with the various systems which constitute the mechanical and electrical engineering of building construction, and elaborates the energy-saving methods of different systems respectively.