一、引言 传统的集中供热(采暖)换热系统是采用汽-水间的间接换热装置(如典型的管壳换热器、板式换热器等)加热冷态介质,用水泵增压克服系统阻力完成热交换循环系统。这种系统经长期使用积累了丰富的经验,比较成熟,但也存在一些固有的缺点。首先是蒸汽热能的充分利用问题,蒸 I. INTRODUCTION The traditional central heating (heating) heat exchange system is the use of steam - water indirect heat exchange device (such as a typical shell and tube heat exchanger, plate heat exchanger, etc.) to heat cold medium, pressurized with a pump To overcome the system resistance to complete the heat exchange cycle system. This system has accumulated rich experience through long-term use, more mature, but also has some inherent disadvantages. The first is the full utilization of steam heat, steaming