蒸汽喷射式热水采暖采用蒸汽喷射泵(以下简称喷射泵)作为加热和加压联合装置,加热和推动水在系统内循环。这种采暖系统在我国北方地区得到了一定的发展。我们针对目前习用的β系数计算法存在的某些问题,提出了一种新的计算理论和方法——断面系数法。这种方法给出喷射泵本身的特性方程,可以将喷射泵的性能同采暖系统的特性连在一起,分析喷射泵的适宜工作范围和系统的工况等,便于进行喷射泵的系列化, Steam jet hot water heating steam jet pump (hereinafter referred to as the jet pump) as a combination of heating and pressure heating, and promote water circulation in the system. This heating system in northern China has been a certain degree of development. In view of some problems existing in the current beta coefficient calculation method, we propose a new calculation theory and method - section coefficient method. This method gives the jet pump itself characteristic equation, jet pump performance can be connected with the characteristics of the heating system together to analyze the jet pump suitable working range and system conditions, etc., to facilitate the series of jet pump,