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primary-secondary pumping
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  二级泵水系统
     Therefore, the topic of this thesis is about the hydraulic analysis and dynamic optimization of pipe-network at the load side for the primary-secondary pumping chilled-water system in air-conditioning with the variable load conditions.
     着眼于此,本论文研究的是空调二级泵水系统负荷侧管网在负荷动态变化工况下的水力分析及优化。
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  “primary-secondary pumping”译为未确定词的双语例句
     Design of frequency control of primary-secondary pumping in air-conditioning water systems
     空调两级泵水系统变频调速的自控设计
短句来源
     Optimization Analysis of the Hydraulic Pipe-network at Load Side for Primary-secondary Pumping Chilled -water System in Air-conditioning
     空调二级泵系统负荷侧水力管网的优化分析
短句来源
     In this thesis, a mathematical model of an actual primary-secondary pumping water system was set up. In order to provide some advices on design, selection and operation administration for the variable frequency control of primary-secondary pumping water system, the influence factors and the possibly occurred situation in its operation were researched and analyzed by means of theoretical analysis and digital simulation.
     本文建立了冷冻水二次泵系统的数学模型,通过数值模拟、理论分析等方法,对二次泵系统变频控制的主要影响因素及其实施中可能出现的状况进行了研究与分析,以期为其设计、选择、运行管理给出合理建议和依据。
短句来源
     Presents the frequency control excogitation for multiple pump in parallel in a primary-secondary pumping system.
     结合具体工程 ,着重介绍了多台变频二级泵并联的自控方案及验证过程。
短句来源
     This dual header system changes the primary-secondary pumping system into a simple primary pumping system, in which the solution pumps work for both ice storage and ice melting circulation purposes, resulting in simplified design of the system, reduced floor area of the plant room, lowed energy consumption and investment.
     这种双集管式系统变二级泵制为单级泵制 ,溶液泵兼作蓄冰泵、融冰泵之用 ,简化了系统 ,减少了设备数量、机房面积、电耗和初投资。 该工程已经运行 ,达到设计要求。
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Based on the characteristic analysis of a primary secondary pumping system, and the design practice in an A/C plant. Review the main points in the common pipe design.

通过分析冷冻水二次环路系统的工作特点 ,结合具体工程项目设计实践 ,阐述了公共管的设计要点

This paper analyzes the use of primary,primary/secondary pumping in ice storage air_conditionig system. 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.

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 .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 .

Analyses the characteristics of centrifugal pumps in parallel with frequency control and pipeline of variable flow water systems. Presents the frequency control excogitation for multiple pump in parallel in a primary-secondary pumping system. Proposes its applicability and causes of failure.

分析了变频调速离心水泵的并联特性和变流量水系统的管路特性。结合具体工程 ,着重介绍了多台变频二级泵并联的自控方案及验证过程。指出了两级泵变频调速水系统的适用场合和成功不多的原因。

 
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