热网循环水泵变频运行的变温差控制
Variable temperature difference control of variable frequency circulating pumps in heat supply network
摘要：
在分析供热系统变流量运行调节的基础上，提出了变温差控制并给出了控制方案。变温差控制过程不仅具有负反馈，而且具有正反馈，能较好地适应外界气候条件的变化。比较分析了变温差控制、定温差控制、定压差控制、变压差控制的节能性，结果表明，变温差控制的节能潜力最大。
关键词：供暖,循环水泵,变频,变温差控制,节能
Abstract：
Based on an analysis on the variable flow operation regulation of heating systems, puts forward variable temperature difference control and control scheme. Variable temperature difference control process has positive feedback as well as negative feedback, capable of following the outdoor climatic change. Compares the energy saving performance of variable temperature difference control, constant temperature difference control, constant pressure difference control and variable pressure difference control. The result shows that the energy saving potential of variable temperature difference control is the most notable.
Keywords:heating, circulating pump, variable frequency, variable temperature difference control, energy conservation