一、引言随着工业的发展,世界能源的消耗量逐年增加,而地下常规能源的储量愈来愈少。不论工业、农业等部门以及人民的生活,无一不需要能源。所以对于能源的问题,不能掉以轻心。能源问题在国内也已引起高度的重视。我国的能源利用率很低,约为28％,低于发达国家。能源利用率低的原因之一是余热利用不好。在余热中,工业余热的数量 I. INTRODUCTION With the development of industry, the world’s energy consumption has been increasing year by year, while the reserves of underground conventional energy have become less and less. Regardless of the sectors of industry, agriculture, and people’s lives, no one needs energy. Therefore, the issue of energy cannot be taken lightly. Energy issues have also attracted high attention in China. China’s energy utilization rate is very low, about 28%, lower than that of developed countries. One of the reasons for low energy utilization is the poor utilization of waste heat. In the heat, the amount of industrial waste heat