一、立项背景我国作为世界温室气体最大排放国和全球第一能源消费大国,政府对降低温室气体排放空前重视,已把节能减排作为当前社会发展的重要工作。在各种节能减排途径中,目前普遍认为建筑节能是潜力最大、最为直接有效的方式,其中对公共建筑进行节能管理是推进建筑节能的重要手段,而能耗限额作为大型公共建筑节能监控管理体系的重要组成部分,其在夏热冬暖地区乃至 I. Project Background As the largest emitter of greenhouse gases in the world and the largest energy consumer in the world, the government places unprecedented emphasis on reducing greenhouse gas emissions and has taken energy conservation and emission reduction as an important task in its social development. Among the various ways of energy saving and emission reduction, building energy saving is generally considered to be the most potential and most direct and effective way. Among them, energy-saving management of public buildings is an important means of promoting energy-saving of buildings. As a major energy-saving monitoring and management system for public buildings, An important part of the system, it is hot in summer and warm in winter