Journal ArticleDOI
Performance parameters of Savonius type hydrokinetic turbine – A Review
Anuj Kumar,R.P. Saini +1 more
TLDR
In this paper, an attempt has been made to review hydrokinetic energy theory for energy conversion system from water currents analogous to wind power system, and the most widespread classes of hydro-kinetic turbines are discussed in detail with respect to their benefits, drawbacks and desirable conditions for applications.Abstract:
Energy crisis and high emission of fossil fuels are major driving forces for developing renewable energy based technologies. In order to meet growing demand for energy, hydropower can be one of the sustainable alternatives. Further, the hydrokinetic turbine is considered as one of the most emerging technologies which harness energy from flowing water. In this paper, an attempt has been made to review hydrokinetic energy theory for energy conversion system from water currents analogous to wind power system. The most widespread classes of hydrokinetic turbines are discussed in detail with respect to their benefits, drawbacks and desirable conditions for applications. It has been found that in spite of some prevailing downsides of vertical axis turbine like of self-starting and lower efficiency, vertical axis turbines are appealing for many riverine applications. One of the prominent turbines of its kind is the Savonius hydrokinetic turbine that has the capacity to self-start at a very low fluid velocity in the river, canal etc. However, Savonius type hydrokinetic turbine inherently has poor efficiency. A number of experimental and numerical studies with a large number of physical designs and parameters have been carried out in the area of Savonius rotor to enhance its efficiency. Under this study, review of different parameters affecting the performance of Savonius hydrokinetic turbine has been carried out and presented in this paper which may be useful for future studies to improve the efficiency of such turbines.read more
Citations
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Journal ArticleDOI
Performance study of ducted nozzle Savonius water turbine, comparison with conventional Savonius turbine
TL;DR: In this paper, the authors proposed a novel system of ducted nozzle configuration around the Savonius rotor to increase the efficiency of the turbine, and the maximum power coefficient of the ducted turbine was increased by 78% compared to the conventional modified rotor.
Journal ArticleDOI
Performance analysis of a Savonius hydrokinetic turbine having twisted blades
Anuj Kumar,R.P. Saini +1 more
TL;DR: Using CFD analysis, an attempt has been made to optimize blade twist angle of Savonius hydrokinetic turbine as discussed by the authors, which is a vertical axis turbine having drag based rotor and suitable for a lower flow velocity of the water stream.
Journal ArticleDOI
Performance analysis of a single stage modified Savonius hydrokinetic turbine having twisted blades
Anuj Kumar,R.P. Saini +1 more
TL;DR: In this paper, a commercial unsteady Reynolds-Averaged Navier-Stokes (URANS) solver in conjunction with realizable k-e turbulence model has been used for numerical analysis.
Journal ArticleDOI
Optimal shape of thick blades for a hydraulic Savonius turbine
TL;DR: In this paper, the authors proposed an optimal shape of the concave and convex sides of a hydraulic Savonius turbine to maximize the output power of the turbine by modifying the blade profile.
Journal ArticleDOI
A techno-economic feasibility analysis of hybrid renewable energy supply options for a grid-connected large office building in southeastern part of France
TL;DR: In this article, the authors focused on how to minimize electricity consumption from the grid by producing as much as possible renewable energy, and in addition, they also observed the economic impacts of integrating green vehicles, such as hydrogen cars, electric cars etc. which are indispensable elements of a sustainable city, in the proposed system.
References
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Journal ArticleDOI
Small hydro power: technology and current status
TL;DR: The European Commission have a target to increase small-scale hydropower capacity by 4500MW (50%) by the year 2010 as discussed by the authors, and the UK has 100MW of existing small hydro capacity (under 5MW) operating from approximately 120 sites and at least 400MW of unexploited potential.
Journal ArticleDOI
Hydrokinetic energy conversion systems and assessment of horizontal and vertical axis turbines for river and tidal applications: A technology status review
TL;DR: A review of the existing and upcoming conversion schemes, and their fields of applications are outlined in this article, based on a comprehensive survey of various hydrokinetic systems reported to date, general trends in system design, duct augmentation, and placement methods are deduced.
Journal ArticleDOI
Wind tunnel performance data for two- and three-bucket Savonius rotors
TL;DR: In this article, a Savonius rotor wind turbine was tested in the Vought Corporation Systems Division 4.9- x 6.1m Low Speed Wind Tunnel to determine aerodynamic performance.
Journal ArticleDOI
A review on the performance of Savonius wind turbines
TL;DR: In this paper, the authors present a review on the performance of Savonius wind turbines and present relevant information about their performance, bringing a discussion about the performance and benefits of using this type of turbines.
Journal ArticleDOI
Optimum design configuration of Savonius rotor through wind tunnel experiments
TL;DR: In this article, wind tunnel tests were conducted to assess the aerodynamic performance of single-, two-and three-stage Savonius rotor systems with both semicircular and twisted blades.