一、背景在热水采暖中,采用蒸汽喷射泵作为加压加热装置,早在七十年代初已在国内某些单位出现。北京总后营房部、山西平阳机械厂等单位,在长期使用过程中已取得较为丰富的实践经验以及明显的经济效益。进入八十年代,蒸汽喷射二级加热器的采用,使蒸汽喷射式热水采暖进入了一个新阶段。自《蒸汽喷射泵的应用》一文在《建筑技术通讯·暖通空调》1983年第3期发表后,我很快收到 First, the background in the hot water heating, the use of steam jet pump as a pressure heating device, as early as the early seventies has appeared in some domestic units. Beijing General Rear Barracks, Shanxi Pingyang Machinery Factory and other units have obtained rich practical experience and obvious economic benefits during long-term use. Into the eighties, the use of steam injection secondary heaters, steam injection hot water heating into a new phase. Since the publication of “Application of Steam Injection Pump” in “Building Technology Communication, Heating, Ventilation and Air Conditioning” published in the 3rd issue of 1983, I soon received