It is proved with the example that the new method works well for water pump efficiency characteristic curve fitting.
实例计算表明，采用该方法可以较好地拟合水泵效率特性曲线。
Linking the efficiency of drip irrigation to the reliability of a solar-powered water pump, the PVDI systems need no batteries, gas, or kerosene.
这一系统将滴灌的高效性与太阳能水泵结合起来，它既不需要电池与汽油，也不需要煤油。
Because of having high efficiency, energy saving, little effect on environment and steady operation, water source heat pump and ground source heat pump are promising in Guiyang.
水源热泵和地源热泵由于具有高效节能、对环境影响小、运行稳定等特点，在贵阳地区很有发展前途。
A heat pump is used for energy efficiency, and solar tubes on the south-east facade heat water.
建筑使用热泵来减少能耗，而东南立面的太阳能管负责加热水。
The results show that available power and power input of water pump continuously decline with motor frequency reducing, and pump efficiency also decrease at the same time.
结果水泵有效功率和输入功率均随着电机频率的下降而不断降低，同时水泵效率也随着频率下降而降低。
When pumping water, the head, shaft power and efficiency of the pump decrease with the reducing in impeller diameter.
输送水时，叶轮切割后，泵的扬程、轴功率、效率都下降。
The development of permanent magnet electrical machinery with high efficiency and high power factor supply new ways for water pump saving energy.
高效、高功率因数的稀土永磁电机为水泵节能开辟了新途径。
In the design of water supply pump station, energy-saving measures are the main way to raise the efficiency of city water supply enterprises.
供水泵站设计中采取节能措施，是提高城市供水生产企业生产效率，节能降耗的主要途径之一。
In order to improve the water power efficiency of pump, casing applies streamline design, the circulation area is increased.
为了提高泵的水力效率，泵壳体采用流线型设计，同时加大了壳体的通流面积。
In this range of air-water ratio the flow rate of mixture slightly decreased, the axial power increased linearly and the pump efficiency increased parabolically with a rise in effective head.
在稳定工作区范围内，不同的含气量条件下，随着排出压头的增加，混合液总量稍有下降，轴功率直线上升，效率呈抛物线变化。
Large-capacity water pump, liquid-cooled oil cooler and twin ring-type radiator fans ensure optimal engine cooling efficiency.
大容量水泵，水冷机油冷却器和双圆环型散热器风扇确保最佳发动机的冷却效率。
It is an important task to increase efficiency of systems and installation freedom between wind turbine and water pump and reduce maintenance for wind pumping systems.
提高小型提水风力机的效率，减少系统的维护量，增加风力机安装位置与水泵安装位置之间的自由度是推广利用风能提水的一项重要工作。
And efficiency of water supplying system will be improved and safety operation of electric pump can be guaranteed.
提高供水系统的效率并保证水泵电机的安全运行。
The difficult problem of a steady high-pressure can't arrive through the water pressure pump have been solved ingeniously, and the efficiency of the testing also have been enhanced...
解决了利用水泵难以获取到稳定高压的难题，并提高了检测效率。
A data study of the efficiency of pipeline system used for reciprocating pump water flooding in oil field was done through experiment.
概述了用实验方法对油田注水管网系统中的管网进行现场数据测试和模拟流程数据测试。
Ground water heat pump; Energy-efficiency; Cost-effective; Payback period.
地下水源热泵；节能性；经济性；回收期。
The feed-water pump for boilers is an important auxilliary equipment in power plant, it's safety and reliability in operation are more important than it's efficiency.
锅炉给水泵是电站的一个重要辅机，其运行的安全可靠性比它的效率更重要。
Compared with the boiler heating system, the mine water-source heat pump system has obvious advantages in the energy-saving, environmental protection, economic efficiency.
与锅炉供热系统相比，矿井水源热泵系统在节能、环保、经济效益方面具有明显的优势。
Water source heat pump (WSHP) replaces cooling towers with underground constant temperature water, and has the characteristics of high efficiency energy-saving.
水源热泵用地下恒温水源代替冷却塔，具有高效节能的特性。
So, it is necessary to decrease the energy consumption of water pump for higher energy efficiency of open-loop lake source heat pump system.
室外循环水泵能耗对湖库塘开式水源热泵系统的能耗存在较大的影响，应该在实际工程应用中采取措施降低循环水泵能耗。
The frequency converter for oil transfer pump and multistage control for electrohydraulic valve are used to prevent water hammer in oil pipe, and improve the efficiency and safety in oil transmission.
输油泵采用变频器进行调控并结合电液阀的多段控制，避免输油管路产生水击，提高了输油作业的工作效率和安全性。
The gas-water separable water-spraying pump horizontal group of the utility model can realize the automatic separation of gas and water, and can raise work efficiency.
本实用新型气水分离的水喷射泵卧式机组可以实现自动气水分离，提高了工作效率。
The phase-change thermal storage type water tank of the heat pump water heater has the advantages of high heat transfer efficiency and large thermal storage density.
本发明的相变储热式热泵热水器水箱具有传热效率高、储热密度大的优点。
Adopt new type of hot water pump, end-steam recycle; good energy efficiency benefit;
采用新型热水泵，尾汽回收再利用，节能效果好；
Also the manufacturing precision of water hydraulic gear pump, especially gear surface and side flank, is required in order to improve its volume efficiency.
需要进一步提高水压齿轮泵加工精度，特别是侧板以及齿轮端面的平面度、表面粗糙度以提高水压齿轮泵的性能。
After a several-working-condition simulation of the water pump, the results showed the remodeled water pump has high efficiency and good performance.
计算结果表明，该改型后的循环水泵具有较好的性能。
After a several-working-condition simulation of the water pump, the results showed the remodeled water pump has high efficiency and good performance.
计算结果表明，该改型后的循环水泵具有较好的性能。
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