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

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.

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

EPJ Web of Conferences ◽

10.1051/epjconf/201920506017 ◽

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.

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Establishing a typical solar radiation year time series for the application of building integrated photovoltaic systems in Taiwan

5th International Conference on Responsive Manufacturing - Green Manufacturing (ICRM 2010) ◽

10.1049/cp.2010.0424 ◽

2010 ◽

Author(s):

Kuo-Tsang Huang ◽

Wen-Sheng Ou

Keyword(s):

Time Series ◽

Solar Radiation ◽

Photovoltaic Systems ◽

Building Integrated Photovoltaic

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Performance investigation of low – Concentration photovoltaic systems under hot and arid conditions: Experimental and numerical results

Energy Conversion and Management ◽

10.1016/j.enconman.2016.09.061 ◽

2016 ◽

Vol 128 ◽

pp. 82-94 ◽

Cited By ~ 31

Author(s):

Mohamed S. Yousef ◽

Ali K. Abdel Rahman ◽

S. Ookawara

Keyword(s):

Numerical Results ◽

Photovoltaic Systems ◽

Low Concentration ◽

Arid Conditions

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

Journal of Solar Energy Engineering ◽

10.1115/1.4029381 ◽

2015 ◽

Vol 137 (3) ◽

Cited By ~ 2

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.

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