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Understanding the Impact of Mesh on Tank Overflow System Capacity - journal
Citation:
Burkhardt, J., J. Goodrich, Jeff Szabo, J. Hall, J. Crosby, S. Tourney, AND R. Clement. Understanding the Impact of Mesh on Tank Overflow System Capacity - journal. JOURNAL OF THE AMERICAN WATER WORKS ASSOCIATION. American Water Works Association, Denver, CO, 110(12):E44-E51, (2018). https://doi.org/10.1002/awwa.1162
Impact/Purpose:
This article is intended to provide water utilities and associated engineers with information that can be used to appropriately size storage tank overflow systems. Specifically, data and analysis is provided that will help them to better understand the impact of the mesh that is installed in order to prevent organisms as small as insects from entering tanks and possibly contaminating them. Tank overflow systems are vital components to a resilient water distribution network, ensuring a tank will not become over-pressurized due to over filling. Experiments were conducted to test the overflow capacity of the upturned elbow style overflow configuration using three different pipe sizes (4”, 6” and 8”), two pipe configurations, with no mesh, and with #24 mesh that was also blocked to different degrees. This article presents data and discusses the formulas used to calculate overflow capacity for systems with and without mesh. Overflows consisting of a vertical only section had a consistently higher capacity than those with a horizontal section near the bottom of the system. When the overflow system reached backpressure limited flow, small increases in flow resulted in large increases in required excess head. The results presented will help water utilities maintain a resilient system by ensuring that overflow systems are appropriately sized and maintained.
Description:
Tank overflow systems are vital components to a resilient water distribution network, ensuring a tank will not become over-pressurized due to over filling. Experiments were conducted to test the overflow capacity of the upturned elbow style overflow configuration using three different pipe sizes (4”, 6” and 8”), two pipe configurations, with no mesh, and with #24 mesh that was also blocked to different degrees. This article presents data and discusses the formulas used to calculate overflow capacity for systems with and without mesh. Overflows consisting of a vertical only section had a consistently higher capacity than those with a horizontal section near the bottom of the system. When the overflow system reached backpressure limited flow, small increases in flow resulted in large increases in required excess head. The results presented will help water utilities maintain a resilient system by ensuring that overflow systems are appropriately sized and maintained.
URLs/Downloads:
DOI: Understanding the Impact of Mesh on Tank Overflow System Capacity - journal
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