大型公共建筑是指单体建筑规模较大(超过2万平方米),有大量内区,依靠中央空调系统和人工照明系统维持室内环境的酒店、商场、写字楼等。这些建筑的单位面积能耗远远高于普通公共建筑和住宅。本文从实际案例出发,详细介绍了某大型公共建筑的中央空调系统冷站节能改造方法和照明系统改造方法,提高整体运行能力的同时达到节能的目的。《绿色建筑2012-中国城市科学研究系列报告》指出:我国各类公共 Large-scale public buildings refer to hotels, shopping malls, office buildings, etc. which are large in size (more than 20,000 square meters) and have a large number of inner areas and rely on central air-conditioning systems and artificial lighting systems to maintain the indoor environment. The energy consumption per unit area of ​​these buildings is much higher than ordinary public buildings and homes. Starting from the actual case, this paper introduces in detail the method of energy-saving retrofit for the cold-blooded central air-conditioning system of a large-scale public building and the method of retrofitting the lighting system to improve the overall operation capability and save energy. “Green Building 2012 - China City Scientific Research Series Report” pointed out: all kinds of public in our country