0前言我国进入21世纪以来,节能环保事业越来越得到重视,一系列的节能政策和节能措施不断颁布实施。尤其2005年底我国首次明确确定节能目标:到“十一五”期末,万元国内生产总值能耗下降到0.98t标准煤,比“十五”期末降低20%左右,平均年节能率为4.4%[1]。 0 Foreword Since China entered the 21st century, energy conservation and environmental protection have received more and more attention. A series of energy saving policies and measures have been promulgated and implemented. At the end of 2005, for the first time in China, for instance, we clearly defined the goal of energy saving: by the end of the “11th Five-Year Plan” period, the energy consumption per 10,000-yuan GDP has dropped to 0.98 t of standard coal, about 20% less than the end of the “Tenth Five-Year Plan” Energy saving rate is 4.4% [1].