scholarly journals Study of Solar Radiation in View of Photovoltaic Systems Optimization

2011 ◽  
Vol 02 (04) ◽  
pp. 367-374 ◽  
Author(s):  
Rachid Chenni ◽  
Ernest Matagne ◽  
Messaouda Khennane
Keyword(s):  
Solar Radiation ◽  
Photovoltaic Systems

Intelligent predictive model of electrical power in photovoltaic systems through solar radiation and temperature on site

2021 ◽  
Author(s):  
Luis Omar Lara Cerecedo ◽  
Nun Pitalua-Diaz ◽  
Jesus Fernando Hinojosa Palafox ◽  
Juan Anzurez Marin ◽  
Salvador Ramirez Zavala
Keyword(s):  
Solar Radiation ◽  
Predictive Model ◽  
Electrical Power ◽  
Photovoltaic Systems

Determination of Mars Solar-Belt by Modeling of Solar Radiation Using Artificial Neural Networks

2019 ◽  
Vol 142 (1) ◽  
Author(s):  
Tamer Khatib ◽  
Irjuwan Abunajeeb ◽  
Zainab Heneni
Keyword(s):  
Solar Radiation ◽  
Back Propagation ◽  
Photovoltaic System ◽  
Photovoltaic Systems ◽  
The Sun ◽  
Water Ice ◽  
Available Energy ◽  
Feed Forward Back Propagation ◽  
Solar Radiation Intensity ◽  
Artificial Neural

Missions to Mars need a power source, while, one of the most compatible sources for such a purpose is the photovoltaic system. Photovoltaic systems generate power based on the available energy from the Sun, and thus, solar radiation intensity at Mars should be known for design purposes. In this research, the feed-forward back-propagation artificial neural network is developed to predict solar radiation in terms of longitude, latitude, time of the day, temperature, altitude, pressure, amount of dust, and volume mixing ratio of water ice clouds. Data which are used to develop this model are obtained from the Mars Climate Database. The results of the developed method are accurate as compared with other methods whereas the correlation (R2) coefficient for the developed model is 0.97. The developed model then is used to predict mean solar radiation and mean temperature for every location on Mars and then the data are presented on Mars maps in order to determine the best location for harvesting energy from the Sun by photovoltaic systems. According to results, the solar radiation-temperature belt on Mars is found to be between latitudes 20 deg south and 15 deg north.

scholarly journals Exciton-Exciton Annihilation as a Mechanism for Uphill Transfer in a Molecular Excitonic System

2019 ◽  
Vol 205 ◽  
pp. 06017
Author(s):  
Craig N. Lincoln ◽  
Matthias Block ◽  
Bastian Baudisch ◽  
Pavel Malevich ◽  
Hans von Berlepsch ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Time Resolution ◽  
Transient Absorption ◽  
Spatial Dimension ◽  
Organic Photovoltaic ◽  
Cyanine Dye ◽  
Photovoltaic Systems ◽  
Exciton Dynamics ◽  
Diffusion Rates ◽  
Exciton Annihilation

Exciton dynamics in a HJ-aggregate of cyanine dye TTBC are investigated by transient absorption with a time resolution of <60 fs and power-dependent emission spectroscopies. Both measurements are consistent with an exciton delocalization length of ~28 monomers. A model assuming diffusive exciton motion reveals that the exciton mobility is at least bimodal and restricted to one spatial dimension. J-band diffusion rates of 2.69 and 2.79e-3 cm2s-1 are found, leading to maximal diffusion lengths of 449 and 14.5 nm. The findings indicate that exciton-exciton annihilation is the origin of effective uphill transfer. This mechanism, if present under solar radiation, maybe useful for organic photovoltaic systems.

Simulation of Energy Production in Grid-Connected Photovoltaic Systems From Measured and Calculated Data From Clear-Sky Radiation Model

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Carlos Henrique Rossa ◽  
João Batista Dias ◽  
Mário Henrique Macagnan
Keyword(s):  
Solar Radiation ◽  
Energy Production ◽  
Calculated Data ◽  
Photovoltaic Systems ◽  
Porto Alegre ◽  
Radiation Model ◽  
Current Configuration ◽  
Clear Sky ◽  
Radiation Data ◽  
Wet Climate

This paper presents a comparison of the energy production in grid-connected photovoltaic systems (GCPPS) from measured and calculated radiation data. The Linke turbidity (TL) factor for the region of Porto Alegre, Brazil, was extracted considering the data of direct solar radiation from the typical meteorological year (TMY). The average annual turbidity value obtained of 4.03 agrees with the wet climate of the region which presents only 17.26% of clear-sky days. There was a difference of 27.5% in the results of the produced energy, which drops to 6.5% when compared with only sunny days in the region, suggesting that the model in the current configuration for this type of estimate is barely adequate.

scholarly journals Demand in abdon calderon parish for possible installation of photovoltaic systems

2018 ◽  
Vol 2 (3) ◽  
pp. 62-69
Author(s):  
Katherine Lisbeth Carreno Suarez ◽  
Andrade Garcia Jean Carlos ◽  
Luis Adrian Saltos Cuenca ◽  
Jorge Alexander Gonzalez Zambranod ◽  
Ángel Andrés Arteaga Ponce
Keyword(s):  
Environmental Impact ◽  
Solar Radiation ◽  
Energy Generation ◽  
Social Impacts ◽  
Observational Research ◽  
Photovoltaic Systems ◽  
The Future ◽  
Geographical Position ◽  
Lighting Systems

Photovoltaic systems installed in Ecuador benefit from the geographical position of the country, since, being located on the equatorial line, solar radiation is constant throughout the year, varying in the rainy seasons. The objective of this work is to evaluate the possibility of installing public lighting systems using photovoltaic systems in the Abdón Calderón parish due to the difficulties that exist today, thereby helping not only to reduce the country's energy generation problems, but also to reduce the environmental impact and provide autonomy to the inhabitants of the parish. An observational research was carried out, in addition to interviewing the residents of the parish related to lighting in the streets, as a result, it was obtained that in the future investments can be made to introduce the technology, improving with it the quality of public lighting, the environmental and social impacts associated with it.

Materials for Concentrator Photovoltaic Systems: Optical Properties and Solar Radiation Durability

2010 ◽  
Author(s):  
R. H. French ◽  
J. M. Rodríguez-Parada ◽  
M. K. Yang ◽  
M. F. Lemon ◽  
E. C. Romano ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solar Radiation ◽  
Photovoltaic Systems

Solar radiation durability of materials components and systems for Low Concentration Photovoltaic Systems

2011 ◽  
Author(s):  
Roger H. French ◽  
Myles P. Murray ◽  
Wei-Chun Lin ◽  
Kara A. Shell ◽  
Scott A. Brown ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Photovoltaic Systems ◽  
Low Concentration
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