Evaluation of output and unit cost of power generation systems utilizing solar energy under various solar radiation conditions worldwide

1999 ◽  
Vol 127 (3) ◽  
pp. 1-12
Author(s):  
Takanobu Kosugi ◽  
Pyong Sik Pak ◽  
Yutaka Suzuki
Keyword(s):  
Power Generation ◽  
Solar Radiation ◽  
Solar Energy ◽  
Unit Cost ◽  
Radiation Conditions ◽  
Power Generation Systems

scholarly journals 4E assessment of power generation systems for a mobile house in emergency condition using solar energy: a case study

2020 ◽  
Author(s):  
Alireza Refiei ◽  
Reyhaneh Loni ◽  
Gholamhassan Najafi ◽  
Evangelos Bellos ◽  
Mohsen Sharifpur ◽  
...  
Keyword(s):  
Power Generation ◽  
Solar Energy ◽  
Emergency Condition ◽  
Power Generation Systems

Changes in extreme surface solar radiation in EURO-CORDEX Regional Climate Models

2021 ◽  
Author(s):  
Blanka Bartok
Keyword(s):  
Climate Change ◽  
Power Generation ◽  
Solar Radiation ◽  
Solar Energy ◽  
Electricity Generation ◽  
Climate Models ◽  
Regional Climate ◽  
Regional Climate Models ◽  
Surface Solar Radiation ◽  
The Impact

<p>As solar energy share is showing a significant growth in the European electricity generation system, assessments regarding long-term variation of this variable related to climate change are becoming more and more relevant for this sector. Several studies analysed the impact of climate change on the solar energy sector in Europe (Jerez et al, 2015) finding light impact (-14%; +2%) in terms of mean surface solar radiation. The present study focuses on extreme values, namely on the distribution of low surface solar radiation (overcast situation) and high surface solar radiation (clear sky situation), since the frequencies of these situations have high impact on electricity generation.</p><p>The study considers 11 high-resolution (0.11 deg) bias-corrected climate projections from the EURO-CORDEX ensemble with 5 Global Climate Models (GCMs) downscaled by 6 Regional Climate Models (RCMs).</p><p>Changes in extreme surface solar radiation frequencies show different regional patterns over Europe.</p><p>The study also includes a case study determining the changes in solar power generation induced by the extreme situations.</p><p> </p><p> </p><p>Jerez et al (2015): The impact of climate change on photovoltaic power generation in Europe, Nature Communications 6(1):10014, 10.1038/ncomms10014</p><p> </p>

Understanding multidecadal variability for energy system studies: can current 20th century reanalyses do the job?

2020 ◽  
Author(s):  
Jan Wohland ◽  
Hannah Bloomfield ◽  
David Brayshaw ◽  
Stefan Pfenninger ◽  
Martin Wild
Keyword(s):  
Power Generation ◽  
Solar Radiation ◽  
Solar Energy ◽  
Wind Energy ◽  
20Th Century ◽  
Energy Production ◽  
Decadal Variability ◽  
Energy System ◽  
Multidecadal Variability ◽  
Climatic Information

<p>The variability of renewable power generation is often quantified based on modern reanalyses such as ERA5 or MERRA-2 which provide climatic information over the last few decades. Compared to infrastructure lifetimes, modern reanalyses cover only short periods and may consequently fail to sample relevant longer-term climate variability. While there is evidence for multi-decadal variability in wind power generation [Wohland et al. (2019), Zeng et al. (2019)], hydropower [Bonnet et al. (2017)] and solar energy [Sweerts et al. (2019)], a consistent treatment of multi-decadal variability has not been achieved. </p><p>This knowledge barrier can potentially be overcome using 20th century reanalyses which provide internally consistent fields of energy-relevant variables (e.g., solar radiation, precipitation, temperature and wind). However, the provision of reliable climatic information on these timescales is known to be a challenge due to, for example, the evolution of measurement techniques. Some cases of spurious trends and other shortcomings of the datasets are known. It is therefore of utmost importance to quantify uncertainties prior to usage in energy system studies. To this end, we systematically compare 20CRv3, 20CRv2c, CERA20C and ERA20C with respect to variables needed in renewable energy assessments and report similarities and discrepancies accross the datasets. The focus is given to substantial differences with respect to multi-decadal solar radiation variability in Europe, also known as dimming and brightening. </p><p><br>References</p><p>Bonnet, R., Boé, J., Dayon, G. & Martin, E. Twentieth-Century Hydrometeorological Reconstructions to Study the Multidecadal Variations of the Water Cycle Over France. Water Resour. Res. 53, 8366–8382 (2017).</p><p>Sweerts, B. et al. Estimation of losses in solar energy production from air pollution in China since 1960 using surface radiation data. Nat Energy 4, 657–663 (2019).</p><p>Wohland, J., Omrani, N. E., Keenlyside, N. & Witthaut, D. Significant multidecadal variability in German wind energy generation. Wind Energ. Sci. 4, 515–526 (2019).</p><p>Zeng, Z. et al. A reversal in global terrestrial stilling and its implications for wind energy production. Nat. Clim. Chang. (2019).</p>

scholarly journals Solar Energy Technology for Northern Cyprus: Assessment, Statistical Analysis, and Feasibility Study

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 940 ◽  
Author(s):  
Youssef Kassem ◽  
Hüseyin Çamur ◽  
Salman Mohammed Awadh Alhuoti
Keyword(s):  
Power Generation ◽  
Solar Radiation ◽  
Solar Energy ◽  
Solar Power ◽  
Ghg Emissions ◽  
Clean Energy ◽  
Global Solar Radiation ◽  
Feasibility Analysis ◽  
Energy Technology ◽  
Northern Cyprus

Solar power is the fastest-growing energy source in the world. New technologies can help to generate more power from solar energy. The present paper aims to encourage people and the government to develop solar energy-based power projects to achieve sustainable energy infrastructures, especially in developing countries. In addition, this paper presents a solar energy road map to attract investors to invest in clean energy technology to help reduce the effect of global warming and enhance sustainable technological development. Therefore, the first objective of the paper is to analyze and compare the monthly global solar radiation for five different locations in Northern Cyprus using the measured data collected from the Meteorological Department and estimated values collected from the satellite imagery database. In addition, the mean hourly meteorological parameters including global solar radiation, air temperature, sunshine, and relative humidity are analyzed statistically and the type of distribution functions are selected based on skewness and kurtosis values. Accordingly, estimating global solar radiation improves solar power generation planning and reduces the cost of measuring. Therefore, models of a surface were analyzed by means of polynomial adjustments considering the values of R-squared. Finally, this study provides a comprehensive and integrated feasibility analysis of a 100 MW grid-connected solar plant project as an economic project in the selected region to reduce electricity tariffs and greenhouse gas (GHG) emissions. RETScreen Expert software was used to conduct the feasibility analysis in terms of energy production, GHG emissions, and financial parameters for the best location for the installation of a 100 MW grid-connected photovoltaic (PV) plant. Finally, the results concluded that the proposed solar system could be used for power generation in Northern Cyprus.

Wind Effects on Power Generation of Solar Farm in California

2019 ◽  
Author(s):  
Ni Li ◽  
Arianna Fatahi ◽  
Dennis Lee ◽  
Jim Y. Kuo ◽  
He Shen
Keyword(s):  
Heat Transfer ◽  
Power Generation ◽  
Solar Radiation ◽  
Solar Energy ◽  
Energy Generation ◽  
Solar Panel ◽  
Solar Irradiation ◽  
Energy Output ◽  
Critical Parameters ◽  
Solar Panels

Abstract In comparison to fossil fuels, solar energy is a more sustainable option due to its high availability and less environmental impact. Improving the efficiency of solar farms has been a primary concern of solar energy research. Many studies focus on the control of the tilt angle of solar modules to maximize their solar radiation reception and energy generation. However, an increase in solar radiation is accompanied by an increase in module temperature, which is known to be a significant parameter that reduces the power generation efficiency. Wind is another influential factor that helps Photovoltaic systems maintain a low operating temperature by enhancing the rate of heat transfer. Therefore, solar radiation and wind behavior are both critical parameters that must be considered to optimize solar panel performance. In this paper, the effect of wind conditions on solar panel performance will be examined. The solar panel energy output model will be built by empirically considering the irradiation, ambient temperature, wind speed, and wind direction. The published weather data and energy output data for the year 2017–2018 have been collected from Antelope Valley Solar Ranch, located in Lancaster, California. Four models have been proposed and the results indicate that the model which incorporates the wind conditions has the highest accuracy in approximating the energy production of solar farms. Among the factors that affect the temperature of solar panels and further the efficiency of solar panels including solar irradiation, convection, conduction, wind plays a major role in convective heat transfer. Based on this model, the potential improvement of energy generation via introducing a horizontal installation angle and adjusting this angle monthly according to the wind conditions is further analyzed. These results will help designers improve the design of solar farms by taking into consideration the local weather conditions.

scholarly journals Short Survey of Architectures of Photovoltaic Arrays for Solar Power Generation Systems

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4917
Author(s):  
Alexander Abramovitz ◽  
Doron Shmilovitz
Keyword(s):  
Power Generation ◽  
Solar Energy ◽  
Capital Investment ◽  
Solar Power ◽  
Energy Generation ◽  
Green Energy ◽  
Solar Power Generation ◽  
Photovoltaic Arrays ◽  
Short Survey ◽  
Power Generation Systems

Since the industrial revolution, the world’s economy has mainly relied on the consumption of fossil fuels. The burning of coal releases vast amounts of toxic COx greenhouse gasses into the atmosphere that bear an undesirable environmental impact. The ongoing offshore oil exploration activities; the infrastructure for oil extraction, production, and transportation; and the inevitable oil spills cause severe damage to the environment and huge loss of sea life, flora, and fauna. Recent awareness of the environmental issues and the worldwide climate change spurred public interest in clean and environmentally friendly “green” energy generation. Solar energy is an abundant and inexhaustible resource that can meet much of the worlds’ energy needs and, thus, has been in the focus of scientific attention for many years. Yet, converting solar energy into usable electric power is a formidable engineering and economical challenge. The recent environmental awareness triggered governments and private companies around the world to encourage further research and capital investment into the development and deployment of efficient and cost-effective solar technologies. This review reports on advances in the technological approaches that can be employed to convert sunlight to electricity. This article presents a short survey of the state-of-the-art architectures of photovoltaic arrays and a review of the concepts and strategies of their associated electronic power processors for solar energy generation. The paper aims to be of assistance to engineers and scientists who are already engaged or just joining this fascinating field, to promote the knowledge of photovoltaic energy and facilitate the proliferation of the solar power generation systems.

scholarly journals Organic Rankine Cycle (ORC) System Applications for Solar Energy: Recent Technological Advances

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2930 ◽  
Author(s):  
T. M. I. Mahlia ◽  
H. Syaheed ◽  
A. E. Pg Abas ◽  
F. Kusumo ◽  
A. H. Shamsuddin ◽  
...  
Keyword(s):  
Power Generation ◽  
Solar Energy ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Selection Processes ◽  
Technological Advances ◽  
Patent Landscape ◽  
Parabolic Dish ◽  
Linear Fresnel Reflector ◽  
Power Generation Systems

Organic Rankine Cycle (ORC) power generation systems may be used to utilize heat source with low pressure and low temperature such as solar energy. Many researchers have focused on different aspects of ORC power generation systems, but none so far has focused on the patent landscape of ORC system applications. As such, the objective of this study is to identify published patents on ORC system applications, particularly for solar energy. Four (4) technologies were identified in ORC application for solar energy: parabolic dish, parabolic trough, solar tower, and linear Fresnel reflector. A methodical search and analysis of the patent landscape in ORC system applications for solar energy published between 2007–2018 was conducted using the Derwent Innovation patent database. From the approximately 51 million patents in the database from various countries and patent agencies, 3859 patents were initially identified to be related to ORC applications for solar energy. After further stringent selection processes, only 1100 patents were included in this review. From these 1100 patents, approximately 12% (130 patents) are associated with parabolic dishes, about 39% (428 patents) are associated with parabolic troughs, approximately 21% (237 patents) are associated with solar towers, and about 28% (305 patents) are associated with linear Fresnel reflectors. Published patents on solar tower technology are currently on an increasing trend, led by China. All of these patents were published in the past 11 years. From this study, further researches on ORC application are still ongoing, but ORC application for solar energy has the potential to advance; allowing the world to ease issues related to over-reliance on fossil fuel.

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