Floating solar photovoltaic systems are rapidly gaining traction due to their potential for higher energy yield and efficiency compared conventional land-based systems. Recent studies indicate that this technology generates 0.6% 4.4% more exhibits improvements ranging from 0.1% 4.45% over its counterpart. Numerous conducted on evaluating innovative have been reported, providing various insights required further development. Unfortunately, these important pieces of information scattered: a...

The Savonius rotor is a drag-based vertical axis wind turbine and used as an alternative source in small-scale energy generation. Design simplicity, low-cost, easy installation, good starting ability, relatively low operating speed independent to directions are the main advantages of this rotor. However, because its efficiency high negative torque produced by returning blade, concept rarely gained popularity. Over last few decades, although number investigations around world have reported...

This paper presents an unsteady two-dimensional computational study in order to observe the effect of overlap ratios on static torque characteristics a vertical axis wind turbine (VAWT). The is performed with help finite volume based fluid dynamics (CFD) software package Fluent 6.3. model two-bladed conventional VAWT having 0, 0.10, 0.15, 0.20, 0.25 and 0.30. Initially, comparative analysis made using various k turbulence models then results are compared experimental data available...

The Savonius-style wind turbine, a class of vertical axis turbines, can be viable option for small scale off-grid electricity generation in the context renewable energy applications. A better self-starting capability at low speeds is one major advantages this turbine. However, as reported open literature, power coefficient conventional design found to inferior compared its counterparts. In regard, new blade has been developed. present investigation, aerodynamic performance newly designed...

In this paper, a three-dimensional numerical study has been conducted by solving the unsteady Reynolds Averaged Navier Stokes equations with shear stress transport (SST) k-omega turbulence model to investigate power production efficiency of three-bladed H-Darrieus vertical axis wind turbines (HDWT) using S-1046 airfoil under accelerated conditions cooling tower exhaust system. Aiming extract waste energy from air, four HDWTs having different aspect ratios were tested varying turbine...

Although considerable progress has already been achieved in the design of wind turbines, available technical designs are not yet adequate to develop a reliable energy converter especially meant for small-scale applications. The Savonius-style turbine appears be particularly promising applications because its simplicity, good starting ability, insensitivity directions, relatively low operating speed, cost and easy installation. However, efficiency is reported inferior as compared other...

Rapid depletion rate of fossil fuels with an increasing energy demand and their high emission are imposing the evolution activities in arena renewable energy. To meet future demands sources, wind is a very promising concept. In this feature, drag based vertical axis turbines (VAWTs) suitable for small scale generation decentralized locations. However, these have low power torque coefficients as compared to other turbines. Numerous blade shapes been proposed till now improve performance...

With the rapid execution in renewable energy field, vertical axis wind turbines are finding its application small-scale distributed generation, particularly rural areas. The Savonius rotor is a drag based turbine and used as converter with low installation maintenance cost. These rotors simple design, easy to assemble can be operated at low-speed from any direction. However, these not gaining popularity because of efficiency improper design. aspect ratio (height diameter rotor) one very...

The technologies surrounding renewable energy have been receiving surmountable attention to producing clean and reducing the dependency on depleting fossil fuel sources. In this context, research investigations vertical axis wind turbines (VAWT) in free stream flow condition has extensively conducted improve extraction efficiency from wind. VAWTs are particularly advantageous locations not suitable for conventional horizontal (HAWT). However, applications of still limited due their lower...

Abstract For rural areas situated in the deep topography of Sarawak, distance from energy grids and plants are too far power appliances. Hence, sustainable alternative method generating for people should be put into consideration. rich with riverine streams, employment hydrokinetic turbines (HKT) would a good to meet their daily requirements. The HKTs fundamentally understood as turbine that harnesses kinetic motion freestreams without need head. In preceding years, development HKT has...

The rapid shrinkage of fossil fuel sources and contrary fast-growing energy needs social, industrial technological enhancements, necessitate the need different approaches to exploit various renewable sources. Among several alternatives, wind is one most emerging prospective because its renewable, sustainable environment friendly nature, especially at offshore locations. recent growth market has significantly increased importance vertical axis turbines, both as floating or fixed...