喷射泵在高低区供热循环系统的数值模拟分析

Numerical Simulation and Analysis of Heating Circulation System with Jet Pump in High and Low Areas

是根据现济南某小区的高区回水动力驱动低区供热循环系统为研究对象,分析在区域供热的热用户楼前管井或地下室加装喷射泵供热系统,喷射泵供热系统不仅结构简单、施工方便,而且可以消耗供暖热用户的富余压头以提高供热系统的水力稳定性,同时在保证区域供暖质量的基础上,使系统达到节电节热效果明显。最后,采用通用的计算流体力学软件Fluent对改进后的喷射泵供热系统负压装置进行力学仿真,分析装置喷射泵后系统内流体力学的力学特征。

This paper is based on the high-area backwater power driven low-area heating and circulating system of a residential district in Jinan.Analysis of installing jet pump heating system in front of tube well or basement of district heating user building.Jet pump heating system is not only simple in structure,but also convenient in construction.At the same time,on the basis of guaranteeing regional heating quality,the system achieves obvious effect of saving electricity and heat.Finally,the general CFD software Fluent is used to simulate the negative pressure device of the improved jet pump heating system,The mechanical characteristics of hydrodynamics in the system after the ejector pump are analyzed.