Lift-type and drag-type hydro turbine with vertical axis for power generation from water pipelines

Wei Yang, Yimin Hou, Huiting Jia, Benqing Liu and Ruofu Xiao

Energy, 2019, vol. 188, issue C

Abstract: Pipeline turbines are designed to supply power for smart sensors installed in water pipelines. They are installed in the water supply pipe network directly and should meet the performance requirements for starting up at low flow rates and having low pressure loss at high flow rates. To this end, we designed two types of vertical axis pipeline turbines with lift-type runner and drag-type runner respectively, and conducted both experimental test and numerical simulations on the hydraulic performance of both the turbines. The results show that both the lift-type and drag-type turbines can meet the performance requirements. Under the same incoming flow conditions, the critical startup flow rate, the tip speed ratio, and the power coefficient of the lift-type turbine is larger. And the startup process of the lift-type turbine is unstable. While the drag-type turbine shows the opposite performances in these respects. In the range of incoming flow velocity studied, the pressure loss of both the turbines increases with the incoming flow velocity, however, the maximum pressure loss is controlled in an acceptable range, which will not affect the normal water supply.

Keywords: Water pipeline monitor; Vertical axis hydro turbine; Lift-type runner; Drag-type runner; Startup performance; Numerical simulation and experimental test (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:188:y:2019:i:c:s0360544219317657

DOI: 10.1016/j.energy.2019.116070

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