供热系统混水连接形式的选择与水泵功率分析
Selection of water-mixing connection structures and power analysis of pumps in heating system
摘要：
给出了6种主要混水连接形式的适用压力工况和水泵有效功率计算公式，比较了不同压力工况下各混水连接形式的水泵功率，讨论了不同压力工况下混水连接形式的选择，分析了优选混水连接形式的节能率及混水比对节能率的影响。通过实例说明定流量供热系统中混水连接形式的选择及其节能率。
关键词：集中供热,混水连接形式,水泵有效功率,压力工况,节能率,混水比
Abstract：
Presents the suitable pressure conditions of six popular structures of water-mixing connection and the calculating methods for effective power of pumps. Compares the powers of pumps of available water-mixing connection structures in different pressure conditions, and discusses the selection of water-mixing connection structures. Analyses the energy-saving ratios of the optimal structures and the influence of water-mixing ratio on the energy-saving ratio. With a case, illustrates the selection of suitable water-mixing connection structure and its energy-saving ratio in heating system with constant flow.
Keywords:central heating, mixing-water connection structure, effective power of pump, pressure condition, energy-saving ratio, water-mixing ratio