Maximizing power generation from ambient stray magnetic fields around smart infrastructures enabling self-powered wireless devices

2020 ◽  
Vol 13 (5) ◽  
pp. 1462-1472 ◽  
Author(s):  
Hyeon Lee ◽  
Rammohan Sriramdas ◽  
Prashant Kumar ◽  
Mohan Sanghadasa ◽  
Min Gyu Kang ◽  
...  
Keyword(s):  
Power Generation ◽  
Magnetic Fields ◽  
Energy Conversion ◽  
Electrical Power ◽  
Electric Energy ◽  
Wireless Devices ◽  
Self Powered

A magnetoelectric coupled magneto-mechano-electric energy conversion mechanism allows the generation of high electrical power from ambient stray magnetic fields around infrastructures.

Conceptual and Basic Design of a Stirling Engine Prototype for Electrical Power Generation by Solar Means

2010 ◽  
Author(s):  
Constantino Roldan ◽  
Pedro Pieretti ◽  
Luis Rojas Solorzano
Keyword(s):  
Power Generation ◽  
Solar Radiation ◽  
Heat Exchangers ◽  
Solar Collector ◽  
Electrical Power ◽  
Electric Energy ◽  
Stirling Engine ◽  
Basic Design ◽  
Analysis Methods ◽  
Complex Phenomena

The research consisted in a conceptual and basic design of a prototype Stirling engine with the purpose of taking advantage of the solar radiation to produce electric energy. The work began with a bibliography review covering aspects as history, basic functioning, design configurations, applications and analysis methods, just to continue with the conceptual design, where the prototype specifications are determined. Finally, a basic dimensioning of the important components as heat exchangers (heater, cooler, and regenerator), piston, displacer and solar collector was elaborated. The principal conclusions were that the different analysis methods had dissimilitude between the results, in this sense, a construction of the prototype is necessary for the understanding of the complex phenomena occurring inside the engine.

A dual functional analytical device for self-powered point of care testing and electric energy storage

2015 ◽  
Vol 51 (46) ◽  
pp. 9527-9530 ◽  
Author(s):  
Chaomin Gao ◽  
Yanhu Wang ◽  
Min Su ◽  
Lina Zhang ◽  
Xianrang Song ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Conversion ◽  
Point Of Care ◽  
Electric Energy ◽  
Biofuel Cells ◽  
Point Of Care Testing ◽  
Electric Energy Storage ◽  
Dual Functional ◽  
Self Powered ◽  
Analytical Device

A dual functional analytical device performing both energy conversion and electric energy storage based on biofuel cells to implement self-powered point-of-care testing was developed based on a piece of Ti foil.

A discussion on advanced methods of energy conversion- Magnetohydrodynamic power generation - Superconducting magnets for m .h.d. generators

1967 ◽  
Vol 261 (1123) ◽  
pp. 558-579 ◽  
Keyword(s):  
Power Generation ◽  
Magnetic Fields ◽  
Energy Conversion ◽  
Magnetic Energy ◽  
Superconducting Magnets ◽  
Minor Component ◽  
Full Potential ◽  
Low Resistivity ◽  
Composite Conductors ◽  
Cryogenic Engineering

This paper will review the science and technology of superconducting magnets and the possibility of their application in large m.h.d. generators. The newly exploited hard superconductors offer, in principle, the most economic means of providing magnetic fields of several tens of kilo-oersteds over large volumes. Unfortunately these materials have exhibited certain peculiarities of behaviour when wound into coils (‘training’ and ‘degradation’) which, until recently, had made it impossible to realize their full potential or to design larger coils with any confidence. The reasons for this are now fairly well understood and are seen to be fundamental to hard superconductors. A number of techniques have been developed to reduce these effects, the most recent, involving the intimate combination of the superconductor with a metal of low resistivity together with the provision of adequate cooling, circumvents the problem completely. A further problem with large superconducting magnets is to protect the windings, in the event of a coolant failure, against destruction by the release of the stored magnetic energy, 1010 J in the case of a large m.h.d. generator magnet. It will be shown that this also dictates the use of composite conductors in which the superconductor is the minor component. Although a number of detailed problems of cryogenic engineering remain to be solved, it is now possible to design windings for large superconducting magnets that will operate predictably, safely and at the full potential of the superconductor.

TERFENOL-D Based Transducer for Power Harvesting From Vibration

2007 ◽  
Author(s):  
Viktor Berbyuk
Keyword(s):  
Energy Conversion ◽  
Electrical Power ◽  
Active Material ◽  
Electric Energy ◽  
Induced Voltage ◽  
Power Harvesting ◽  
Giant Magnetostrictive Material ◽  
Physical Prototype ◽  
Electrical Power Output ◽  
Magnetostrictive Transducer

The proposed paper addresses the problem of vibration-to-electric energy conversion using giant magnetostrictive material — TERFENOL-D. Both theoretical and experimental results of the study of performance of magnetostrictive transducer which was built at Chalmers University of Technology are presented. The mathematical models have been developed for modeling of magnetostrictive transducer based on constitutive equations of magnetoelastic behavior of TERFENOL-D rod and standard formulae of electromagnetism for induced voltage and current in the pick-up coil due to variation of magnetic field. The developed models are used to evaluate induced voltage and electrical power output for displacement driven and as well as force driven transducers. Several experiments using test rig generating periodic excitations with frequency up to 1000 Hz have been conducted for newly developed physical prototype of transducer having TERFENOL-D rod with 50 mm in length and 15 mm in diameter as active material. The validity of the transducer model is illustrated by comparison simulation data with experiment. The obtained results of the study the vibration-to-electric energy conversion using TERFENOL-D have confirmed the potential of using giant magnetostrictive materials for power harvesting from vibration.

Current progress and performance improvement of Pt/C catalysts for fuel cells

2020 ◽  
Vol 8 (46) ◽  
pp. 24284-24306
Author(s):  
Xuefeng Ren ◽  
Yiran Wang ◽  
Anmin Liu ◽  
Zhihong Zhang ◽  
Qianyuan Lv ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Energy Conversion ◽  
Performance Improvement ◽  
Electric Energy ◽  
Energy Conversion Efficiency ◽  
High Energy ◽  
Carnot Cycle ◽  
High Energy Conversion Efficiency ◽  
And Performance

Fuel cell is an electrochemical device, which can directly convert the chemical energy of fuel into electric energy, without heat process, not limited by Carnot cycle, high energy conversion efficiency, no noise and pollution.

Metal-like electrical conductivity in LaxSr2−xTiMoO6 oxides for high temperature thermoelectric power generation

2017 ◽  
Vol 46 (18) ◽  
pp. 5872-5879 ◽  
Author(s):  
Mandvi Saxena ◽  
Tanmoy Maiti
Keyword(s):  
Power Generation ◽  
Electrical Conductivity ◽  
High Temperature ◽  
Energy Conversion ◽  
Thermoelectric Power ◽  
Conversion Efficiency ◽  
Energy Conversion Efficiency ◽  
Power Generators ◽  
Thermoelectric Power Generation

Increasing electrical conductivity in oxides, which are inherently insulators, can be a potential route in developing oxide-based thermoelectric power generators with higher energy conversion efficiency.

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