Performance investigation of self-adjusting blades turbine through experimental study

Behrouzi, Fatemeh; Nakisa, Mehdi; Maimun, Adi; Ahmed, Yasser M.; Souf-Aljen, A. S.

doi:10.1016/j.enconman.2018.11.066

Cited by 20 publications

(6 citation statements)

References 27 publications

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“…Initially, the rotor for both turbines (DBT and FBT) experience the same amount of drag, when the turbine is about to rotate, while during rotation DBT experiences more drag force than FBT at most of the azimuthal angles. In order to investigate the performance of self‐adjusting drag blade, Behrouzi et al compared the performance with fixed blade turbine. It was found that the self‐adjusting blades reduce the backward drag that results in about 30.7% increase in coefficient of power (C P ).…”

Section: Configurations Of Cross‐flow Hydrokinetic Turbinesmentioning

confidence: 99%

A review on technology, configurations, and performance of cross‐flow hydrokinetic turbines

Saini

2019

Int J Energy Res

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Summary Increased demand of energy leads to exploration of new sources of energy. In the last few years, hydrokinetic energy technology emerged as an important area in the field of renewable energy generation. Various hydrokinetic turbines have been studied and used to harness the hydrokinetic potential. Among all hydrokinetic turbine technology, cross‐flow hydrokinetic turbine is considered as the most suitable approach for the riverine system. There are various configurations of cross‐flow hydrokinetic turbine exist for hydrokinetic energy extraction. A number of numerical and experimental studies were carried out on the performance enhancement and design optimization of different configurations under variable operating conditions. Under the present paper, review of different rotor for the configurations of the cross‐flow hydrokinetic turbines are discussed. The paper will be useful to understand the cross‐flow hydrokinetic technology in order to explore the methods for selection, performance enhancement, and design optimization of cross‐flow hydrokinetic turbines.

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Section: Configurations Of Cross‐flow Hydrokinetic Turbinesmentioning

confidence: 99%

A review on technology, configurations, and performance of cross‐flow hydrokinetic turbines

Saini

2019

Int J Energy Res

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“…Among various renewable energy sources, hydrokinetic turbine (HKT) is a promising area to focus on due to the abundance of rivers in Malaysia [8] with Savonius as the most practical turbine. The Savonius hydrokinetic turbine operates on the drag principle and consists of two semi-circular blades and a pair of endplates [9]. Savonius turbines have excellent self-starting characteristics, a relatively simple design, lower fabrication costs, and are less affected by the direction of the incoming flow [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…The Savonius hydrokinetic turbine operates on the drag principle and consists of two semi-circular blades and a pair of endplates [9]. Savonius turbines have excellent self-starting characteristics, a relatively simple design, lower fabrication costs, and are less affected by the direction of the incoming flow [9,10]. Since most communities living in remote areas have access to river streams with an average flow rate of less than 1 m/s [7], Savonius HKT systems are more practicable for generating an off-grid electrical power supply.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Power Storage System for Savonius Turbines in Wind and Water

Kamaruddin

Shamsuddin²

2022

ARASET

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The Savonius turbine is practical in generating off-grid electrical power for hydrokinetic applications due to its simple design, particularly for small rivers in rural areas. However, despite many studies on methods to improve turbine performance, the electrical aspect of the turbine system is rarely discussed. Therefore, the present study aims to evaluate the performance of a simple and affordable power storage system using a conventional 2-bladed Savonius turbine. The experiment was conducted in a wind tunnel and a water channel with flow speeds of 6 m/s and 0.33 m/s, respectively, corresponding to a Reynolds number of 62700. A power coefficient of 0.09 was discovered for the wind experiment and 0.11 for the water. The total amount of energy extracted from the water was 60% less than from the wind due to the lower available power. It was observed that the tip speed ratio decreases over the charging period due to the constant current and voltage of the Lithium-Ion batteries. This will allow for a fluctuation in the amount of required current and consequently affect the torque needed to spin the generator. The findings confirmed the functionality of the electrical storage system and contributed to the low manufacturing and maintenance cost of the hydrokinetic turbines.

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“…This is due to existing difficulties in the experimental characterization of these devices, such as problems with starting rotation at low water velocities and obtaining measurements of their power stage since, at these low speeds, torque is small [19]. In this sense, some studies stand out, such as the study carried out by Behroui et al [20] where a Savonius rotor was characterized using Computational Fluid Dynamic (CFD) techniques, obtaining the mechanical performance. Another study of interest is the work of Kumar and Saini [21], which presents a numerical methodology for optimizing the blade size of a Savonius rotor taking into account the hydrodynamic parameters of the water stream.…”

Section: Introductionmentioning

confidence: 99%

Power Performance Assessment of Vertical-Axis Tidal Turbines Using an Experimental Test Rig

et al. 2021

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This article presents the characteristic curves of a vertical-axis hydrokinetic tidal turbine of the Darrieus subtype aimed at meeting the electricity demand of port facilities located at harbors and estuaries with low water-speed conditions. The turbine was tested in the water-current flume of the University of Santiago de Compostela for several flow conditions with different water heights and water speeds. Blockage conditions were tested by examining the results from two groups of tests: with and without an accelerator device that restricts the flow around the rotor. The tip speed ratio and the power coefficient were used to characterize the performance of the turbine for each test. Finally, the results for open-field conditions were obtained by applying empirical expressions, which allowed us to assess the performance of the device in estuaries and harbors with known water-flow regimes.

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Performance investigation of self-adjusting blades turbine through experimental study

Cited by 20 publications

References 27 publications

A review on technology, configurations, and performance of cross‐flow hydrokinetic turbines

A review on technology, configurations, and performance of cross‐flow hydrokinetic turbines

Experimental Investigation of the Power Storage System for Savonius Turbines in Wind and Water

Power Performance Assessment of Vertical-Axis Tidal Turbines Using an Experimental Test Rig

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