scholarly journals Diffusion-emission theory of photon enhanced thermionic emission solar energy harvesters

2012 ◽  
Vol 112 (4) ◽  
pp. 044506 ◽  
Author(s):  
Aapo Varpula ◽  
Mika Prunnila
Keyword(s):  
Solar Energy ◽  
Thermionic Emission ◽  
Energy Harvesters

scholarly journals Harvesting Solar Energy from Asphalt Pavement

2021 ◽  
Vol 13 (22) ◽  
pp. 12807
Author(s):  
Md Fahim Tanvir Hossain ◽  
Samer Dessouky ◽  
Ayetullah B. Biten ◽  
Arturo Montoya ◽  
Daniel Fernandez
Keyword(s):  
Solar Energy ◽  
Energy Harvester ◽  
Light Transmission ◽  
Low Cost ◽  
Visible Spectrum ◽  
Weather Conditions ◽  
Element Analysis ◽  
Energy Harvesters ◽  
Wide Range ◽  
Self Powered

This study aims at designing and developing a new technique to harvest solar energy from asphalt pavements. The proposed energy harvester system consists of a pavement solar box with a transparent polycarbonate sample and a thin-film solar panel. This device mechanism can store energy in a battery charged over daytime and later convert it into electric power as per demand. A wide range of polycarbonate samples containing different thicknesses, elastic moduli, and light transmission properties were tested to select the most efficient materials for the energy harvester system. Transmittance Spectroscopy was conducted to determine the percent light transmission property of the polycarbonate samples at different wavelengths in the visible spectrum. Finite Element Analysis modeling of the pavement–tire load system was conducted to design the optimal energy harvester system under static load. It was followed by the collection of data on the generated power under different weather conditions. The energy harvesters were also subjected to vehicular loads in the field. The results suggest that the proposed pavement solar box can generate an average of 23.7 watts per square meter continuously over 6 h a day under sunny conditions for the weather circumstances encountered in South Texas while providing a slightly smaller power output in other weather circumstances. It is a promising self-powered and low-cost installation technique that can be implemented at pedestrian crossings and intersections to alert distracted drivers at the time of pedestrian crossing, which is likely to improve pedestrian safety.

scholarly journals Selected methods of converting solar energy into electricity - comparative analysis

2018 ◽  
Vol 49 ◽  
pp. 00029
Author(s):  
Kamil Gawkowski ◽  
Jarosław Sikora
Keyword(s):  
Comparative Analysis ◽  
Solar Energy ◽  
Near Field ◽  
Photovoltaic Cells ◽  
Thermionic Emission ◽  
Photovoltaic Generation ◽  
Innovative Solutions ◽  
Energy Conversion Systems ◽  
Thermionic Energy Conversion ◽  
Thermionic Energy

This article presents selected methods of converting solar energy into electricity: photovoltaic cells (PV), converters which use photon-enhanced thermionic emission (PETE), and near-field enhanced thermionic energy conversion systems (NETEC). PETE and NETEC systems are innovative solutions that use the thermionic emission phenomenon and can replace photovoltaic generation of electricity. We did a comparative analysis of such issues as: structure, principle of operation, working temperature and with particular emphasis - efficiency. A comparison of these parameters is shown in the graphs and summarized in the table. Based on the analysis, we have drawn conclusions about previous achievements and development perspectives in the field of converting methods.

Physics, Modelling, and Optimization Studies of Photon-Enhanced Thermionic Emission-Based Hybrid Energy Conversion System

2018 ◽  
pp. 399-452 ◽  
Author(s):  
S. C. Kaushik ◽  
Ravita Lamba ◽  
S. K. Tyagi
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Electricity Generation ◽  
Thermionic Emission ◽  
Electrical Energy ◽  
The Sustainable Development ◽  
Hybrid Energy ◽  
Conversion System ◽  
Energy Conversion System ◽  
Modelling And Optimization

The sustainable development of clean and efficient electricity generation techniques accelerated the research for invention of alternative electricity generation methods. In this chapter, the conceptual analysis of newly invented photon-enhanced thermionic emission (PETE) energy conversion process has been presented. It is a promising option for harvesting solar energy in terms of capturing photon as well as thermal energy simultaneously and converting solar energy into electrical energy based on photovoltaic and thermionic emission processes of energy conversion. Thus, the PETE process utilizes photons for PV conversion and heat of radiation for thermionic emission process. The main objective of this chapter is to review and analyze the performance of PETE converters including thermal modeling, choice of materials, and parametric optimization. The appropriate choice of material requirements for cathode and anode of PETE converters is necessary for practical design of PETE converters. The PETE converter may be an efficient future option for electricity generation using solar energy.

Submerged Solar Energy Harvesters Performance for Underwater Applications

2019 ◽  
Author(s):  
Salsabeel Kamal ◽  
Ghazal M. Al-sayyad ◽  
Rana Abdelmoteleb ◽  
Mohammad Abdellatif ◽  
Sameh O. Abdellatif
Keyword(s):  
Solar Energy ◽  
Energy Harvesters
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