A review of wind energy harvesting technology: Civil engineering resource, theory, optimization, and application

Applied Energy, Год журнала: 2025, Номер 389, С. 125771 - 125771

Опубликована: Март 29, 2025

Язык: Английский

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Effect of length and attack angle of the splitter plates on circular cylinder piezoelectric water energy harvester

Physics of Fluids, Год журнала: 2024, Номер 36(4)

Опубликована: Апрель 1, 2024

With the micro-miniaturization of offshore wireless sensors, signal lights, and other devices emergence problem self-powering in distant sea, how to harvest energy from low-speed currents has become a hot spot research nowadays. To improve output power conversion efficiency water flow, we propose vertical cantilever beam circular cylinders fitted with rigid splitter plate piezoelectric harvester (CSPPEH). In this paper, influence length attack angle on CSPPEH been experimentally investigated. The vibration response mechanism involving mutual transition between vortex-induced galloping was analyzed through particle image velocimetry flow field visualization. experimental results indicate that characteristics increase initially then decrease plates (L/D = 0–2.4) at 0°, which can be explained by theoretical model harvester. It is found optimal occur 1.40D an 90°. maximum values for amplitude, swing angle, voltage, power, density are 4.96D, 21.7°, 42.68 V, 910.81 μW, 1.94 mW/cm3, respectively. Efficiency up 2.2% 0.4D 90° plate. Compared bare cylinder harvester, significantly improved. demonstration continuous charging discharging capacitors light emitting diode lights performed show practicability designed CSPPEH. Overall, present study enables applications realizing self-powered sensing under low-water-speed environments.

Язык: Английский

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A survey of flow-based energy harvesters for powering sustainable wireless sensor nodes

Journal of Renewable and Sustainable Energy, Год журнала: 2025, Номер 17(1)

Опубликована: Янв. 1, 2025

Self-powered wireless monitoring systems, electronic devices, and embedded microsystems have gained enormous interest in recent years due to the vast sensing applications various fields, including civil infrastructure, oil gas industry, healthcare, environment, military, agriculture, consumer electronics. The main component of these systems is a sensor node (WSN). continuous operation WSN depends on an uninterrupted power source, which now delivered from electrochemical batteries with short life cycles related major environmental problems. One potential solution avoid replacing WSNs explore energy harvesting as sustainable method for either directly or enabling regular battery recharge. Various energies surround nodes, thermal, solar, vibrational, acoustic, fluid flow. This paper discusses advancements field flow harvesters based open environments well pipelines channels. Flow (FEHs) transform into electrical energy. then utilized WSN. Mainly, two types FEHs, flow-induced rotation-based (mini turbines) vibration-based (electromagnetic, piezoelectric, hybrid mechanisms-based harvesters), been reviewed discussed detail concerning device architecture, type, bluff body shapes, pressure velocity, conversion mechanism, performance parameters, implementation. Most reported piezoelectric overall sizes ranging millimeters centimeters. output harvester ranges 0.1 170 mW, whereas 0.38 nW 20 electromagnetic 2 234 mW. However, (HFEHs) 16.55 μW 648 HFEHs can produce highest densities because their combined conversions.

Язык: Английский

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Numerical investigation of the vortex-induced response characteristics of a circular cylinder rotating on an eccentric shaft

Ocean Engineering, Год журнала: 2025, Номер 331, С. 121309 - 121309

Опубликована: Апрель 24, 2025

Язык: Английский

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Piezoelectric Polymers and Polymer Composites

Engineering materials, Год журнала: 2025, Номер unknown, С. 1 - 30

Опубликована: Янв. 1, 2025

Язык: Английский

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Challenges and Outlook

Engineering materials, Год журнала: 2025, Номер unknown, С. 389 - 394

Опубликована: Янв. 1, 2025

Язык: Английский

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Research and Design of Energy-Harvesting System Based on Macro Fiber Composite Cantilever Beam Applied in Low-Frequency and Low-Speed Water Flow

Materials, Год журнала: 2024, Номер 17(12), С. 3033 - 3033

Опубликована: Июнь 20, 2024

In nature, lakes and water channels offer abundant underwater energy sources. However, effectively harnessing these green sustainable sources is challenging due to their low flow velocities. Here, we propose an energy-harvesting system based on a cylindrical bluff body cantilever beam composed of macro fiber composite (MFC), taking advantage the MFC’s low-frequency, lightweight, high piezoelectric properties achieve harvesting in low-frequency low-speed flows. When impacts body, it generates vibration-enhanced vortices behind body. The optimized diameter distance between MFC were determined using finite element analysis software, specifically COMSOL. According simulation results, applied was designed prepared. 25 mm, 10 mm maximum output voltage 22.73 V; power density could reach 0.55 mW/cm2 after matching appropriate load. results experimental findings this study provide valuable references for designing investigating systems

Язык: Английский

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Design and characteristic analysis of a high-performance deformable piezoelectric wind energy harvester based on coupled vibrations

Sustainable materials and technologies, Год журнала: 2024, Номер unknown, С. e01134 - e01134

Опубликована: Сен. 1, 2024

Язык: Английский

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Experimental investigation on hydrokinetic energy harvesting from flow-induced vibration of oscillators with rod-shaped attachments

Ocean Engineering, Год журнала: 2024, Номер 319, С. 120250 - 120250

Опубликована: Дек. 31, 2024

Язык: Английский

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