The configuration and variable frequency adjusting speed of water circulation pump in city heat-supply system are introduced, and the effects of energy saving are analyzed.
对城市供热系统中循环水泵的配置及变频调速进行了介绍，分析了其节能效果。
In the heat-supply system with distributed variable frequency pump, there exists a zero pressure difference, at which supply and return water pressures are equal.
分布式变频泵供热系统中存在零压差点，该点供回水压力相等。
In this paper, a scheme for the water supply system of speed adjustment with variable frequency is introduced.
本文提出了一种变频调速给水系统方案。
This paper introduces the application of 4.8mw variable frequency power supply of Fengguang brand in the water pump test system of Arak Machinery Plant in Iran.
本文介绍了风光牌4.8MW变频电源在伊朗阿拉克机械厂水泵测试系统的应用情况。
This paper introduces the application of 4.8mw variable frequency power supply of Fengguang brand in the water pump test system of Arak Machinery Plant in Iran.
本文介绍了风光牌4.8MW变频电源在伊朗阿拉克机械厂水泵测试系统的应用情况。
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