利用混水直供系统优化一次网热量分配

Optimization of the Heating Distribution of Primary Network Through Mixing Water Directing Supply System

低真空直供系统供暖半径大,暖气片与地暖住宅并存。为满足末端住宅的供暖要求,系统处在高温和大流量状态下运行,存在剩余热量而没有有效利用的情况。另外,城市的快速发展难与供暖主管网协调同步,在直供管网的末端规划新建了大量住宅小区,导致末端热源不足。为解决这种前端耗能过高和末端热源不足的状况,通过利用混水直供技术,优化低真空直供管网的整体热量分配,满足其他小区的供暖需求,同时,也节约出部分热量,增加新建住宅供暖面积。既消除管网末端热量不足问题,也解决了低真空直供系统末端所存在的水力失调问题。

Low vacuum directing supply system has a large heating radius, with the coexistence of radiators and radiant floor housing. In order to meet the requirements of the end residential heating, the system is operated at a high temperature and high flow state, without effective use of the remaining heat. In addition, primary heating network is not able to meet the heating demand of rapid urban housing development. In the areas covered by the end of mixing water directing supply network are planned to construct for more residential housing, which leads to a result that heat source of the end of this network is inadequate. For solving this unbalance state, high heat consumed in the start point of this network and inadequate heat supply in the end of this network, a technique of mixing water directing supply is adopted and heat distribution on low vacuum directing supply pipe network is optimized. Thus this improvement of mixing water directing supply provides the extra heat to meet the demand of other residential areas, hence also saves part of heat, and then increases the heating coverage of new residential area. Finally this improvement eliminates the insufficient heat at the end of pipe network, and solves the hydraulic imbalance at the end of low vacuum directing supply system.