scholarly journals The thermoelectrochemistry of the aqueous iron(ii)/iron(iii) redox couple: significance of the anion and pH in thermogalvanic thermal-to-electrical energy conversion

2018 ◽  
Vol 2 (12) ◽  
pp. 2717-2726 ◽  
Author(s):  
Mark A. Buckingham ◽  
Frank Marken ◽  
Leigh Aldous
Keyword(s):  
Energy Conversion ◽  
Electrical Energy ◽  
Redox Couple

The multi-faceted significance of the anion upon the thermoelectrochemistry of the iron(ii/iii) redox couple has been extensively explored.

scholarly journals Transport Parameter Correlations for Digitally Created PEFC Gas Diffusion Layers by Using OpenPNM

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1141
Author(s):  
Ángel Encalada-Dávila ◽  
Mayken Espinoza-Andaluz ◽  
Julio Barzola-Monteses ◽  
Shian Li ◽  
Martin Andersson
Keyword(s):  
Fuel Cell ◽  
Energy Conversion ◽  
Transport Phenomena ◽  
Electrical Energy ◽  
Gas Diffusion ◽  
Polymer Electrolyte Fuel Cell ◽  
Carbon Paper ◽  
Transport Parameter ◽  
Transport Parameters ◽  
Depth Analysis

A polymer electrolyte fuel cell (PEFC) is an electrochemical device that converts chemical energy into electrical energy and heat. The energy conversion is simple; however, the multiphysics phenomena involved in the energy conversion process must be analyzed in detail. The gas diffusion layer (GDL) provides a diffusion media for reactant gases and gives mechanical support to the fuel cell. It is a complex medium whose properties impact the fuel cell’s efficiency. Therefore, an in-depth analysis is required to improve its mechanical and physical properties. In the current study, several transport phenomena through three-dimensional digitally created GDLs have been analyzed. Once the porous microstructure is generated and the transport phenomena are mimicked, transport parameters related to the fluid flow and mass diffusion are computed. The GDLs are approximated to the carbon paper represented as a grouped package of carbon fibers. Several correlations, based on the fiber diameter, to predict their transport properties are proposed. The digitally created GDLs and the transport phenomena have been modeled using the open-source library named Open Pore Network Modeling (OpenPNM). The proposed correlations show a good fit with the obtained data with an R-square of approximately 0.98.

scholarly journals In-grid solar-to-electrical energy conversion system modeling and testing

2012 ◽  
Vol 16 (suppl. 1) ◽  
pp. 159-171 ◽  
Author(s):  
Zoltan Corba ◽  
Vladimir Katic ◽  
Boris Dumnic ◽  
Dragan Milicevic
Keyword(s):  
Power Plant ◽  
Simulation Model ◽  
Energy Conversion ◽  
System Modeling ◽  
Electrical Energy ◽  
Photovoltaic Cell ◽  
Modeling Methods ◽  
Photovoltaic Power ◽  
Conversion System ◽  
Energy Conversion System

In this study, a simulation model of in-grid solar-to-electrical energy conversion system is presented. In this case, the in-grid solar-to-electrical energy conversion system is small photovoltaic power plant, which was constructed by the Center for Renewable Energy and Power Quality from Faculty of Technical Sciences (FTS). Equivalent circuit diagram of photovoltaic cell is described which was used to develop the simulation model of modules. Possible types and topologies of inverters are also described. The photovoltaic power plant is described briefly, because it is necessary to understand the simulation model. The result of simulation is an electricity annual production by the power plant. These results were compared with the real values, while its get a good overlap. The paper also presents the modern modeling methods developed at Faculty of Technical Sciences in the Laboratory for RES systems.

scholarly journals Optimizing the Electrical Energy Conversion Cycle of Dielectric Elastomer Generators

2014 ◽  
Vol 26 (38) ◽  
pp. 6617-6621 ◽  
Author(s):  
Samuel Shian ◽  
Jiangshui Huang ◽  
Shijie Zhu ◽  
David R. Clarke
Keyword(s):  
Energy Conversion ◽  
Electrical Energy ◽  
Dielectric Elastomer

Thermal and Electrical Energy Transport and Conversion in Nanoscale Electron Field Emission Processes

2002 ◽  
Vol 124 (5) ◽  
pp. 954-962 ◽  
Author(s):  
T. S. Fisher ◽  
D. G. Walker
Keyword(s):  
Energy Conversion ◽  
Field Emission ◽  
Energy Transport ◽  
Exchange Process ◽  
Electrical Energy ◽  
Electron Field Emission ◽  
Operational Parameters ◽  
Transfer Rates ◽  
Conversion Rates ◽  
Electron Field

This paper considers the theory of electron field emission from nanoscale emitters with particular focus on thermal and electrical energy transport. The foundational theory of field emission is explored, and a model is presented that accounts explicitly for the energy band curvature produced by nanoscale tip emitters. The results indicate that the inclusion of band curvature strongly influences the energetic distribution of electrons for emitter radii less than 50 nm. The energy exchange process between emitted and replacement electrons is shown to allow high local energy transfer rates that can be exploited in direct thermal-to-electrical energy conversion processes. The dependence of energy conversion rates on material and operational parameters is demonstrated. Throughout the paper, opportunities for further research involving nanoscale heat transfer, materials development, and modeling are highlighted.

scholarly journals Utilization of a magnetic field-driven microscopic motion for piezoelectric energy harvesting

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20527-20533 ◽  
Author(s):  
Sanggon Kim ◽  
Gerardo Ico ◽  
Yaocai Bai ◽  
Steve Yang ◽  
Jung-Ho Lee ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Energy Harvesting ◽  
Energy Conversion ◽  
Particle Shape ◽  
Electrical Energy ◽  
Piezoelectric Energy Harvesting ◽  
Dependent Manner ◽  
Piezoelectric Energy

Magneto–mechano–electrical energy conversion in poly(vinylidenefluoride-trifluoroethylene) piezoelectric nanofibers integrated with magnetic nanoparticles in a particle-shape dependent manner.

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