This paper states the method of selecting and using circulating pump in hot water heating system properly to save electric energy.
合理的选择和使用热水供暖系统循环水泵，以达到节约电能的目的。
For being easy to operate and decreasing the shot -time idle high pressure, this method can save the energy and expand the life of vibrating pump.
由于操作简单快速，对短时间的高压闲置也可以降压，所以能节约能源、延长振动泵的寿命。
Based on the climate and energy price in Shanghai, gas engine driven heat pump can save about 23% primary energy and 11.3% running cost.
根据上海地区的气候条件和能源价格，燃气机热泵比电动热泵能节约至少23%的一次能源和11.3%的运行费用。
A variable displacement pump could save energy during the long holding time.
变量泵可在长的保压时间内节省能源。
When the switch is closed, the variable pump has no oil supply, the current decline will keep the motor in empty waiting state, thus effectively save energy.
当水开关关闭时变量泵不供油，电流下降使电机处在空载待机状态，这样就有效达到节能。
The kind of pump improves greatly the control efficient and control accuracy and simply the design of hydraulic system with proportional regulation and save the energy of hydraulic systems.
应用这种泵可大大提高液压系统控制效率、控制精度，简化了比例调节液压系统的设计，并使液压系统具有节能的功效。
Lastly, analyzing the characters of pump and the change, I estimated the potential of save energy, and draw some conclusions.
最后，对泵类负载的特性进行分析，比较了使用变频前后的特性变化，对其节能潜力进行了估算，得出了一些结论。
This article analyses the loss of power of electric motor, and tells that pressure and speed adjustment of the pump not only save energy but also not lead to over heated of the electric motor.
分析电动机功率损耗，阐述了泵类负载调压调速不仅可以大幅度地节能，而且不会造成电机过热。
The solar energy and the heat pump water heater equipment, does not need the value to defend, movement absolute safety, moreover the completely automatic control, may save the personnel cost.
太阳能和热泵热水器设备，节电，运行绝对安全，而且运行费用低，可节省人员成本。
Hence the pump station uses a pump system of changeable frequency in order to save energy.
为了节能，中水加压泵站采用变频供水系统。
Case studies have shown that better system design and more effective pump application can usually save 20% or more in energy costs and represent a large, frequently overlooked savings opportunity.
个案研究显示，良好的系统设计，以及更有效的泵的操作往往能够在能耗上节省20%，而且可以呈现出更广阔的节能空间。
It is a type of economical aptitude pump unit which usually save energy over 50% than general models with convenient maintenance, simple adjustment, low maintenance charge on the safe side.
该机调参简易、维护方便、安全可靠、维护费用低，与常规抽油机相比节能50%以上，是一种智能型的节能抽油机。
Large power industries are looking for good ways to save energy and reduce emission; they pay more attention to the control of frequency conversion of condensate pump, and promote its usage.
在大型发电企业中，各企业都在寻找各种节能减排的方式，凝泵变频控制受到更多的电厂重视和应用推广。
Large power industries are looking for good ways to save energy and reduce emission; they pay more attention to the control of frequency conversion of condensate pump, and promote its usage.
在大型发电企业中，各企业都在寻找各种节能减排的方式，凝泵变频控制受到更多的电厂重视和应用推广。
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