WANGTong,LIU Li-jia,CAO Xian-tao,et al.Technical Discussion on Full Frequency Conversion Water Supply Equipment[J].China Water & Wastewater,2023,39(4):42-46.
Technical Discussion on Full Frequency Conversion Water Supply Equipment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第4期
Page:
42-46
Column:
Date of publication:
2023-02-17
- Keywords:
- secondary water supply; changes in water consumption; full frequency conversion; traditional single frequency conversion
- Abstract:
- The full frequency conversion water supply equipment is a new type of water supply equipment at present. To analyze the advantages of the full frequency conversion water supply equipment, this paper established the cumulative energy consumption model of full frequency and single frequency conversion control on the main pump at constant pump outlet pressure with the numerical solution method. The energy consumption of 100 meters head per ton of water under ideal conditions was calculated. Taking the highest daily water consumption rule in a university residential area in Xi’an as the background, the full frequency and single frequency conversion control relation curve of energy consumption and flow were plotted when two pumps and three pumps were operated in parallel. The pump speed regulation ratio and energy saving mechanism under the two control modes were analyzed. The simulation results showed that the parallel inefficiency zone was eliminated by the full frequency conversion control. The running of two pumps and three pumps both saved more energy than single frequency conversion control and the energy saving rate decreased with the flow increasing. The full frequency conversion control of this district saved more energy than single frequency conversion control throughout the day with an energy saving rate of 4.8%.
Last Update:
2023-02-17