Use of solar energy for electricity production by direct conversion by means of thermo-electric converters and photo-electric cells

Solar Energy ◽  
1963 ◽  
Vol 7 (2) ◽  
pp. 81-82
Keyword(s):  
Solar Energy ◽  
Direct Conversion ◽  
Electricity Production ◽  
Thermo Electric

scholarly journals Photodoping of metal oxide nanocrystals for multi-charge accumulation and light-driven energy storage

Nanoscale ◽  
2021 ◽  
Author(s):  
Michele Ghini ◽  
Nicola Curreli ◽  
Andrea Camellini ◽  
Mengjiao Wang ◽  
Aswin Asaithambi ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solar Energy ◽  
Metal Oxide ◽  
Direct Conversion ◽  
Charge Accumulation ◽  
Innovative Solutions ◽  
And Storage ◽  
The Way

Light-driven multi-charge accumulation (i.e., photodoping) of doped metal oxide nanocrystals opens the way to innovative solutions for the direct conversion and storage of the solar energy.

REVIEW OF THE PRODUCTION OF ELECTRICITY FROM PHOTOVOLTAICS IN THE REPUBLIC OF MACEDONIA

2013 ◽  
Vol 4 (2) ◽  
Author(s):  
Igor Tomovski ◽  
Aleksandra Kanevče ◽  
Ljubčo Kocarev
Keyword(s):  
Direct Conversion ◽  
Production Costs ◽  
Electricity Production ◽  
Renewable Sources ◽  
Global Trends ◽  
Republic Of Macedonia ◽  
The Republic ◽  
Technological Limitations ◽  
Legislative Measures ◽  
Made In

Global trends in the energy sector are focused towards extensive inclusion of renewable sources in the energy production. Solar energy has proven to be a valuable candidate, especially for direct conversion into electricity. Its wider use has, so far, among other, been constrained by the technological limitations, resulting in higher production costs compared to those from conventional non-renewable sources, primarily coal. In that sense, the efforts of the scientific community have for long been directed towards development of both efficient and inexpensive solutions. However, the major boost in the electricity production from photovoltaics (PV) came from the legislative measures, primarily the introduction of feed-in tariffs. Following the global trends, a significant increase in PV inclusion in the electricity production was made in the Republic of Macedonia. In the article we give a brief review of the achieved progress.

Performance Evaluation of an Integrated Solar Combined Cycle

2012 ◽  
Author(s):  
Collins O. Ojo ◽  
Damien Pont ◽  
Enrico Conte ◽  
Richard Carroni
Keyword(s):  
Solar Energy ◽  
Capital Investment ◽  
Power Plants ◽  
Solar Power ◽  
Combined Cycle ◽  
Electricity Production ◽  
Water Steam ◽  
Plant Operator ◽  
Central Receiver ◽  
Solar Field

The integration of steam from a central-receiver solar field into a combined cycle power plant (CCPP) provides an option to convert solar energy into electricity at the highest possible efficiency, because of the high pressure and temperature conditions of the solar steam, and at the lowest capital investment, because the water-steam cycle of the CCPP is in shared use with the solar field. From the operational point of view, the plant operator has the option to compensate the variability of the solar energy with fossil fuel electricity production, to use the solar energy to save fuel and to boost the plant power output, while reducing the environmental footprint of the plant operation. Alstom is able to integrate very large amounts of solar energy in its new combined-cycle power plants, in the range of the largest solar field ever built (Ivanpah Solar Power Facility, California, 3 units, total 392 MWel). The performance potential of such integration is analyzed both at base load and at part load operation of the plant. Additionally, the potential for solar retrofit of existing combined-cycle power plants is assessed. In this case, other types of concentrating solar power technologies than central receiver (linear Fresnel and trough) may be best suited to the specific conditions. Alstom is able to integrate any of these technologies into existing combined-cycle power plants.

Increased Efficiency of Photovoltaic Module via Groundwater Cooling: Energy and Economic Considerations

2011 ◽  
Author(s):  
Cory Budischak ◽  
Keith W. Goossen
Keyword(s):  
Solar Energy ◽  
Cooling System ◽  
Research Question ◽  
Digital Simulation ◽  
Electrical Energy ◽  
Energy System ◽  
Direct Conversion ◽  
Added Value ◽  
Photovoltaic Module ◽  
Sustainable Energy System

Solar energy will be an important source of energy for a sustainable energy system whether or not it is directly collected (solar thermal, photovoltaics) or indirectly collected (wind, wave, etc). This project focused on increasing the efficiency of the direct conversion of solar energy into electricity, which is also known as photovoltaics (PV). It has long been known that photovoltaic cells perform less efficiently at higher temperatures. In fact, solar modules under concentration are frequently cooled either actively or passively. The current study, however, focused on cooling modules under no concentration. The goal of the current project was to answer the question: Can the energy gained by cooling a photovoltaic module with groundwater be greater than the energy used by the cooling system and is there an economic benefit? A digital simulation of a simple photovoltaic module under groundwater cooling was performed in order to answer the research question. The simulation was performed for Phoenix, AZ and assuming certain control parameters it was found that the overall system produced over 9% more electricity than a system without groundwater cooling. While the groundwater cooled system increased overall electrical production, the economics of the system will also be presented. Recently, an Arizona utility APS introduced time of use pricing for electricity. Because groundwater cooling provides the most benefit during very hot days with high electrical demand, cooling is more economically attractive. A simple economic analysis will be presented including estimated costs of the cooling system and added value of the excess electrical energy produced under different APS rate plans.

scholarly journals The Systematic Study of the Feasible Photovoltaics in Eastern Kentucky

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Sanghyun Lee
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Fossil Fuels ◽  
Solar Power ◽  
Average Power ◽  
Electricity Production ◽  
The Sun ◽  
Renewable Energy Resources ◽  
Eastern Kentucky ◽  
Run Off

Photovoltaics (PV-also called solar photovoltaic devices) are used to harness the power of the sun via the electronic process that occurs within semiconductor cells. The solar energy is absorbed by the cells, which causes the electrons to break away from their atoms, allowing them to flow within the material to produce electricity. This electricity will become the renewable energy for Kentucky, as the generation of coal will but come to a stop within the near future. Like Denmark who is running on 100% renewable generation we must stride to become fully operational on solar. In the present work, we systematically studied about renewable energy resources, in particular, solar energy for the application of photovoltaic panels in Eastern Kentucky. By analyzing data from our PV cells at Morehead State University designed to follow the direction of the sun for optimized output and by incorporating MPPT charge controllers, we have constructed a maximum power algorithm that performs best for the location. Utilizing these, measurements of daily electricity production in comparison to the average power needed for household use has validated our research. With the advancements in solar cell technology what was once impossible is now reality, as solar power can easily power this region based on our data. Knowing this, being a prime location we can now push to enable the advancement of renewable energy production and become less dependent on fossil fuels, thus creating an infrastructure that will run off solar power.

Photovoltaic solar power plant investment optimization model for economic external balance: Model of Turkey

2018 ◽  
Vol 30 (3) ◽  
pp. 522-541 ◽  
Author(s):  
Mehmet Alagöz ◽  
Nihal Yokuş ◽  
Turgut Yokuş
Keyword(s):  
Solar Energy ◽  
Current Account ◽  
Optimization Model ◽  
Linear Optimization ◽  
Investment Strategy ◽  
Electricity Production ◽  
Current Account Balance ◽  
Production Values ◽  
Linear Optimization Model ◽  
Current Deficit

Through using a linear optimization model that interprets solar energy and current deficit parameters, investment plans were performed for countries which have current deficit problem of energy source. The specifics of the study are due to the linear optimization model, which reveals the current deficit and solar energy together for the investment strategy. While the model is constituted, without affecting the existed current account, some parameters based on such as profit transfers for foreign investments, payments of interest for domestic investments, import rates for photovoltaic solar panels, solar energy electricity production values, electricity demand projection for the future and import resource rates for electricity production. In the framework of these constraints of the model, the effects of solar systems on domestic investment and foreign direct investments on current account balance are analyzed for the period of 2017–2030 in Turkey. In the application of the model in Turkey to reduce the current deficit, this is concluded that the solar energy is a significant opportunity. In addition, the linear optimization model is considered as a reference for countries facing energy-related current deficit problems.

scholarly journals Previsão da produção de eletricidade em instalações de energia solar fotovoltaica usando métodos diretos / Forecast of electricity production in photovoltaic solar energy facilities using direct methods

2021 ◽  
Vol 7 (12) ◽  
pp. 113281-113290
Author(s):  
Jorday Arostegui Morell ◽  
Eduardo Sierra Gil ◽  
Israel Gondres Torné ◽  
Fábio de Sousa Cardoso ◽  
Angilberto Muniz Ferreira Sobrinho
Keyword(s):  
Solar Energy ◽  
Direct Methods ◽  
Electricity Production ◽  
Photovoltaic Solar Energy

O trabalho apresenta uma comparação entre os resultados obtidos para a previsão da produção de eletricidade em instalações de energia solar fotovoltaica, usando diferentes métodos diretos. Devido à natureza intermitente e incerta da energia solar, associada à influência de múltiplos fatores meteorológicos, a geração de energia fotovoltaica necessita de ferramentas de previsão cada vez mais precisas para garantir o funcionamento eficiente e confiável do sistema. Nesse estudo, as previsões para cada hora analisada são calculadas por três dos métodos mais usuais e são comparadas usando o erro percentual absoluto médio como referência. Os resultados são testados com os dados de geração de energia obtidos do Parque Solar Fotovoltaico Imías, que tem uma capacidade instalada de 2,2 MWp. Independentemente dos métodos mostrarem que garantem uma previsão com alta precisão, existem diferenças na eficácia de cada previsão, nas mesmas condições.

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