一前言随着国家建设的飞速发展,能源消耗急剧增加,能源浪费也尤为突出,建筑节能减排理念也深入建筑电气设计中。目前我国建筑消耗非常大,据有关资料显示,我国在建筑方面能源消耗相当于世界上同等发展中国家消耗的3倍多。在民用建筑中,电能的消耗比例大概是:空调用电占建筑用电的40%~50%,水泵等动力设备用电占10%~15%,而照明用电占15%~25%。近几年随着我国住宅建筑的大面积开发以及人民生活水平的提高,住宅用户对建筑服务水平提出了更高要求,如住宅内生活热水、家用 A foreword With the rapid development of national construction, a sharp increase in energy consumption, energy waste is also particularly prominent, building energy-saving emission reduction concept also in-depth architectural electrical design. At present, China’s construction consumption is very large. According to relevant information, China’s energy consumption in construction is equivalent to more than three times that of the developing countries in the world. In civil buildings, the proportion of energy consumption is probably: air conditioning electricity consumption accounts for 40% to 50% of construction electricity, water pumps and other power equipment, electricity accounts for 10% to 15%, while lighting electricity accounts for 15% to 25%. In recent years, with the large-scale development of residential buildings in China and the improvement of people’s living standards, residential users have put forward higher requirements on the service level of buildings, such as residential hot water, household