Experimental Investigation of a Hydraulic Turbine for Hydrokinetic Power Generation in Irrigation/Rainfall Channels
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RESEARCH ARTICLE
Experimental Investigation of a Hydraulic Turbine for Hydrokinetic Power Generation in Irrigation/Rainfall Channels Aly Hassan Abdelbaky Elbatran 1,2 & Omar B. Yaakob 3 & Yasser M. Ahmed 2,4 Received: 29 May 2019 / Accepted: 29 April 2020 # Harbin Engineering University and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The development of microchannels with open flow for use in irrigation and rainy areas is challenged by electricity generation via hydrokinetic devices in shallow and low velocity flows. Conventional hydrokinetic turbines are known to be highly dependent on current speed and water depth. Another drawback of conventional turbines is their low efficiency. These shortcomings lead to the need to accelerate the flow in the channel system to enhance the extracted power. The method of deploying a novel turbine configuration in irrigation channels can help overcome the low performance of conventional hydrokinetic turbines. Therefore, this study experimentally presents a bidirectional diffuser-augmented channel that includes dual cross flow/Banki turbines. Results show that the maximum efficiency of the overall system with two turbines is nearly 55.7%. The efficiency is low relative to that of hydraulic turbines. Nevertheless, the result can be considered satisfactory given the low head of the present system. The use of this system will contribute to a highly efficient utilization of flows in rivers and channels for electrical energy generation in rural areas. Keywords Irrigation channels . Cross flow turbine (CFT) . Bidirectional diffuser-augmented (BDA) . Tidal current . Flow characteristics . Efficiency
1 Introduction Article Highlights • Deploying a novel turbine configuration in irrigation channels can help overcome the low performance of conventional hydrokinetic turbines • A bidirectional diffuser-augmented channel that includes dual cross flow/Banki turbines has been experimentally presented • This system promises more sufficient performance and higher efficiency than the conventional hydrokinetic turbines * Aly Hassan Abdelbaky Elbatran [email protected] 1
Faculty of Engineering, Arab Academy for Science and Technology and Maritime Transport, Alexandria 1029, Egypt
2
Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
3
Marine Technology Center, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia
4
Department of Naval Architecture and Marine Engineering, Faculty of Engineering, Alexandria University, Alexandria, Egypt
The run-of-river scheme is generally adopted by microhydropower stations for the generation of electrical energy. This scheme utilizes the flow of water within the natural range of a river or channel. The scheme is not deployed with any type of reservoir. This application attracts investments in the electrification of hilly and isolated areas due to its easy construction, low cost, and use of small hydrological areas (Elbatran et al. 2015a; Rojanamon et al. 2009). Another micro-hydrop
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