Enhancement in thermo‐electric energy harvesting efficiency by embedding PDMS in form‐stable PCM composites

2021 ◽  
Author(s):  
Chengbin Yu ◽  
Jae Ryoun Youn ◽  
Young Seok Song
Keyword(s):  
Energy Harvesting ◽  
Electric Energy ◽  
Thermo Electric ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

A Piezoelectric Energy Harvesting Damper for Low-Frequency Application

2015 ◽  
Author(s):  
Arata Masuda ◽  
Yasuhiro Hiraki ◽  
Naoto Ikeda ◽  
Akira Sone
Keyword(s):  
Energy Harvesting ◽  
High Efficiency ◽  
Electric Energy ◽  
Low Frequency ◽  
Offshore Structures ◽  
Piezoelectric Energy ◽  
Piezoelectric Cantilever ◽  
Work Input ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

In this study, a design of an energy harvesting damper for low-frequency applications, such as energy harvesting from long period infrastructures, tanks and pipings, and maritime and offshore structures, is presented. In this design, the low-frequency relative motion of the damper is transformed into a high-frequency motion of a piezoelectric cantilever beam by a mechanical switching mechanism, referred to as “plucking” mechanism that couples and decouples the cantilever to the damper rod so that the input energy into the damper is converted to electric energy with high efficiency. In this paper, the energy harvesting efficiency is theoretically calculated for the harvesters with and without plucking mechanism and the optimized maximum performance is derived. Then the electrical switching circuit for the enhancement of the electromechanical conversion efficiency, referred to as “SSHI” interface is introduced. Numerical case studies suggest that the harvester with an ideally implemented parallel SSHI circuit can retrieve over 70 % energy of the maximum mechanical work input on the damper rod.

scholarly journals Wake-foil interactions and energy harvesting efficiency in tandem oscillating foils

2021 ◽  
Vol 6 (7) ◽  
Author(s):  
Bernardo Luiz R. Ribeiro ◽  
Yunxing Su ◽  
Quentin Guillaumin ◽  
Kenneth S. Breuer ◽  
Jennifer A. Franck
Keyword(s):  
Energy Harvesting ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency ◽  
Oscillating Foils

scholarly journals Stoppers Energy Harvesting Efficiency Enhancement via Optimal Linear Controller

2016 ◽  
Author(s):  
Douglas Da Costa Ferreira ◽  
Fábio Roberto Chavarette ◽  
Jean-Marc Stephane Lafay ◽  
Paulo Rogerio Novak ◽  
Samuel Pagotto ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Efficiency Enhancement ◽  
Linear Controller ◽  
Optimal Linear ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

Energy Harvesting Efficiency of III–V Multi-Junction Concentrator Solar Cells under Realistic Spectral Conditions

2010 ◽  
Author(s):  
S. P. Philipps ◽  
G. Peharz ◽  
R. Hoheisel ◽  
T. Hornung ◽  
N. M. Al-Abbadi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Harvesting ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency

scholarly journals Analytical research on energy harvesting systems for fluidic soft actuators

2018 ◽  
Vol 15 (1) ◽  
pp. 172988141875587 ◽  
Author(s):  
Tao Wang ◽  
Wei Song ◽  
Shiqiang Zhu
Keyword(s):  
Energy Harvesting ◽  
Dynamic Models ◽  
Original System ◽  
Control Performance ◽  
Harvesting Systems ◽  
Energy Harvesting System ◽  
Analytical Research ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency ◽  
Soft Actuators

Energy consumption has significant influence on the working time of soft robots in mobile applications. Fluidic soft actuators usually release pressurized fluid to environment in retraction motion, resulting in dissipation of considerable energy, especially when the actuators are operated frequently. This article mainly explores the potential and approaches of harvesting the energy released from the actuators. First, the strain energy and pressurized energy stored in fluidic soft actuators are modeled based on elastic mechanics. Then, taking soft fiber-reinforced bending actuators as case study, the stored energy is calculated and its parametric characteristics are presented. Finally, two energy harvesting schematics as well as dynamic models are proposed and evaluated using numerical analysis. The results show that the control performance of the energy harvesting system becomes worse because of increased damping effect and its energy harvesting efficiency is only 14.2% due to the losses of energy conversion. The energy harvesting system in pneumatic form is a little more complex. However, its control performance is close to the original system and its energy harvesting efficiency reaches about 44.1%.

Improving energy harvesting efficiency of dye sensitized solar cell by using cobalt-rGO co-doped TiO2 photoanode

2022 ◽  
Vol 891 ◽  
pp. 162040
Author(s):  
Ikhtiar Ahmad ◽  
Rashida Jafer ◽  
Syed Mustansar Abbas ◽  
Nisar Ahmad ◽  
Ata-ur-Rehman ◽  
...  
Keyword(s):  
Solar Cell ◽  
Energy Harvesting ◽  
Dye Sensitized Solar Cell ◽  
Doped Tio2 ◽  
Dye Sensitized ◽  
Harvesting Efficiency ◽  
Energy Harvesting Efficiency ◽  
Co Doped ◽  
Tio2 Photoanode

Design and Simulation Analysis of Vibration Energy Harvesting System Based on ADAMS

2019 ◽  
Author(s):  
Ziheng Zhu ◽  
Lin Xu ◽  
Mohamed A. A. Abdelkareem ◽  
Junyi Zou ◽  
Jia Mi
Keyword(s):  
Energy Harvesting ◽  
Vibration Energy ◽  
Bench Test ◽  
Test Results ◽  
Human Beings ◽  
Vibration Energy Harvesting ◽  
Wide Range ◽  
Harvesting Efficiency ◽  
Simulation Results ◽  
Energy Harvesting Efficiency

Abstract With the recent energy crisis, the new energy harvesting technologies have become one of the hot spots in engineering academic research and industrial applications. By its wide range of application fields, vibration energy harvesting technologies have been gradually developed and utilized in which an efficient and stable harvester technology is one of the recent key problems. In order to improve energy harvesting efficiency and reduce energy loss caused by motor inertial commutation, many mechanical structures or hydraulic structures that convert reciprocating vibration energy into single direction rotation of motor are proposed. Although these methods can improve energy harvesting efficiency, they can have negative effects in some cases, especially in the case of vibration energy harvesting from human beings. This paper proposes a vibration harvesting mechanism with mechanical rectification filter function applied to backpack. The prototype model of the system was established in SolidWorks and imported into ADAMS. Thereafter, dynamic analyses of mechanical rectification filtering characteristics and meshing characteristics of one-way clutch were simulated in ADAMS. Based on ADAMS, parametric design analysis and its influence on the mechanical rectification characteristics were investigated. The simulation results were validated by bench test results. Simulation results is done by ADAMS and the results match well with bench test results.

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