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二次泵
    Control and Adjusting Regime Point of Secondary Pumping System
    二次泵系统的控制方式及调节工况点
    Design and control strategy of secondary pumping systems
    二次泵系统的设计及控制方法探讨
    Aiming at the dynamic load changes, using the secondary pumping energy consume as a target, considering the pipe-network of unbalance rate, adjustability and stability, the structure optimization and dynamic optimization in system circulation of the pipe-network is accomplished in the thesis.
    最后,针对空调负荷的动态变化,以二次泵能耗为目标,兼顾水系统管网的不平衡度、可调性以及稳定性,对二级泵水系统负荷侧管网进行了结构优化和动态运行优化。
    This paper analyzes the use of primary,primary/secondary pumping in ice storage air_conditionig system.
    对冰蓄冷空调系统中采用一次泵系统与二次泵系统进行了分析 .
    Points out that, even if constant speed pumps are used ,the primary/secondary pumping system is energy saving, the increase in first cost is not large,the simple payback year is short, and that it's control is simple. So,in ice storage system, the primary/secondary pumping system, as compared with the primary system, is a better way.
    指出即使采用恒流量泵 ,冰蓄冷空调中二次泵系统也要比一次泵系统节能 ,而且初投资增加不大 ,回收期短 ,是一种控制简单、切实可行的泵的设置方式 .
    By calculating a simplified secondary pumping system model and analyzing two different hydraulic regime in variable water volume flow system with different DP control sensor locations, this paper draws the adjusting regime point curves at varied adjusting regime, acquires the zone of adjusting regime point at varied adjusting regime, and compares the advantages and disadvantages of two different way of DP sensor points locations.
    通过对二次泵系统的简化模型计算,分析了在变流量条件下两种不同定压控制方式时系统的水力工况,绘制了二次泵各种调节工况下的曲线图,确定了调节工况点的分布范围,讨论了两种定压方式的优缺点。
    Analyses the characteristics and load regulation method of secondary pumping variable water flow rate air conditioning systems. Treats the issues about constant pressure difference control in variable pump frequency regulating.
    分析了空调二次泵变水量系统的特点及其负荷调节方法,探讨了水泵变速调节中系统定压差控制的相关问题。
    The results show that the hydrodynamic stability of a secondary pumping system is preferable and that the head required for variable pump control is relative to the load distribution when applying far-end constant pressure difference control.
    分析结果表明,二次泵系统具有较好的水力稳定性,水泵调速采用远端定压差控制时,水泵扬程与负荷分布有关。
 

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