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- Title
Hydraulic performance of non-pressurized mesh filter in front of pumps.
- Authors
LEI Chenyu; LIU Zhenji; ZONG Quanli; YANG Hao; LONG Yangjuan; LU Chen
- Abstract
[Objective] Non-pressurized mesh filters are often installed in front of pumps to filter sediments and debris. In this paper, we study the influence of different irrigation water sources and backwash device parameters on hydraulic performance of a new network filter. [Method] The water flow rate in the experiment ranged from 120 to 160 m3/h, and the sediment concentration in the water varied from 0.2 to 0.8 g/L. The backwash varied from 1 to 20 m3/h, and the velocity gradient in the filter box changed from 1 to 4 r/min. A multi factor dispersion analysis method was used to analyze the experimental results. [Result] ① The initial sediment concentration had minimal impact on hydraulic performance of the mesh filter, contributing only 0.010 8 to the overall effect. However, the influence of water flow duration on the initial sediment concentration was significant, exceeding 159%. ② The fourth model provided the best fit for the overall regression analysis, with a residual value of 0.804 4, significantly higher than other models; its coefficient of determination R² was 0.986 1. ③ the optimal performance was achieved when flow rate was 120.198 m3/h, velocity was 1.112 r/min, and self-cleaning flow rate was 19.934 m3/h. The associated a minimum energy loss was 16.024 kPa. [Conclusion] The model we proposed can accurately predict the impact of operation conditions and sediment concentration in the water on the performance of the non-pressurized mesh filters. Selecting optimal operation conditions can minimize the energy loss across the filter.
- Subjects
PARTICLE size determination; PUMPING machinery; IRRIGATION water; ENERGY dissipation; FACTOR analysis; REGRESSION analysis; WATER filters
- Publication
Journal of Irrigation & Drainage, 2024, Vol 43, Issue 6, p68
- ISSN
1672-3317
- Publication type
Article
- DOI
10.13522/j.cnki.ggps.2023434