A Theory of Concentrators of Solar Energy on a Central Receiver for Electric Power Generation

1976 ◽  
Vol 98 (3) ◽  
pp. 375-383 ◽  
Author(s):  
M. R. Riaz
Keyword(s):  
Solar Energy ◽  
Power Systems ◽  
Power Plants ◽  
Analytical Form ◽  
Effective Concentration ◽  
Large Area ◽  
Solar Concentrators ◽  
Field Representation ◽  
Time Profiles ◽  
Central Receiver

The modeling of the performance of large-area solar concentrators for central receiver power plants is formulated using a continuum field representation of ideal heliostat arrays that accounts for two governing factors: the law of reflection of light rays imposes steering constraints on mirror orientations; the proximity of mirrors creates shadow effects by blocking the incident and/or reflected solar radiation. The results of a steering analysis which develops the space-time characteristics of heliostats and of a shadow analysis which determines the local effectiveness of mirrors in reflecting solar energy to a central point are combined to obtain in closed analytical form the global characteristics of circular concentrators. These characteristics which appear as time profiles for mirror orientations, for effective concentration areas (i.e., reflected solar flux), and for concentration ratios, establish theoretical limits of performance against which actual or realistic solar power systems can be compared and assessed.

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.

scholarly journals Performance Evaluation of Solar Power Plants: A Review and a Case Study

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2253
Author(s):  
Mahmoud Makkiabadi ◽  
Siamak Hoseinzadeh ◽  
Ali Taghavirashidizadeh ◽  
Mohsen Soleimaninezhad ◽  
Mohammadmahdi Kamyabi ◽  
...  
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Electricity Generation ◽  
Power Plants ◽  
Solar Power ◽  
Ocean Waves ◽  
Solar Power Plant ◽  
Large Area ◽  
Energy Technologies ◽  
Solar Power Plants

The world’s electricity generation has increased with renewable energy technologies such as solar (solar power plant), wind energy (wind turbines), heat energy, and even ocean waves. Iran is in the best condition to receive solar radiation due to its proximity to the equator (25.2969° N). In 2020, Iran was able to supply only 900 MW (about 480 solar power plants and 420 MW home solar power plants) of its electricity demand from solar energy, which is very low compared to the global average. Yazd, Fars, and Kerman provinces are in the top ranks of Iran, with the production of approximately 68, 58, and 47 MW using solar energy, respectively. Iran also has a large area of vacant land for the construction of solar power plants. In this article, the amount of electricity generation using solar energy in Iran is studied. In addition, the construction of a 10 MW power plant in the city of Sirjan is economically and technically analyzed. The results show that with US$16.14 million, a solar power plant can be built in the Sirjan region, and the initial capital will be returned in about four years. The results obtained using Homer software show that the highest maximum power generation is in July.

scholarly journals Solar Energy Research and Development Achievements in Israel and Their Practical Significance

2004 ◽  
Vol 126 (3) ◽  
pp. 921-928 ◽  
Author(s):  
Amnon Einav
Keyword(s):  
High Temperature ◽  
Solar Energy ◽  
Power Systems ◽  
Alternative Energy ◽  
Power Plants ◽  
Thermal Power ◽  
Electric Energy ◽  
Energy Resource ◽  
Organic Rankine Cycle ◽  
Practical Significance

This paper reviews the pioneering efforts done in Israel over the last 50 years to explore different directions of developing the solar energy resource as an alternative energy supply. An early start included the improvement of solar collectors for heating water for domestic uses. This was followed by low-temperature Organic Rankine Cycle turbines to supply electricity for remote locations, and then the development and commercialization of the SEGS Solar Thermal power plants. Current research directions are described, including high temperature Solar Tower power systems, production of “solar fuels” at high temperature to enable storage and transportation of solar energy, photovoltaic materials and photovoltaic systems development, solar absorption cooling, and the bold idea of large “Energy Towers” to produce electric energy from cooling of hot dry desert air. The paper concludes that additional efforts in Israel and abroad to continue developing and deploying of solar energy systems, having benevolent influence on the environment, should continue.

scholarly journals Concentrating Solar Power Technologies

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1048 ◽  
Author(s):  
Maria Simona Răboacă ◽  
Gheorghe Badea ◽  
Adrian Enache ◽  
Constantin Filote ◽  
Gabriel Răsoi ◽  
...  
Keyword(s):  
Solar Energy ◽  
Power Systems ◽  
Energy Use ◽  
Solar Power ◽  
Energy System ◽  
High Tech ◽  
Large Area ◽  
Policy Makers ◽  
Field Development ◽  
World Energy

Nowadays, the evolution of solar energy use has turned into a profound issue because of the implications of many points of view, such as technical, social, economic and environmental that impose major constraints for policy-makers in optimizing solar energy alternatives. The topographical constraints regarding the availability of inexhaustible solar energy is driving field development and highlights the need for increasingly more complex solar power systems. The solar energy is an inexhaustible source of CO2 emission-free energy at a global level. Solar thermal technologies may produce electric power when they are associated with thermal energy storage, and this may be used as a disposable source of limitless energy. Furthermore, it can also be used in industrial processes. Using these high-tech systems in a large area of practice emboldens progress at the performance level. This work compiles the latest literature in order to provide a timely review of the evolution and worldwide implementation of Concentrated Solar Power—CSP—mechanization. The objective of this analysis is to provide thematic documentation as a basis for approaching the concept of a polygeneration solar system and the implementation possibilities. It also aims to highlight the role of the CSP in the current and future world energy system.

Design and On-Sun Testing of a Solid Particle Receiver Prototype

2008 ◽  
Author(s):  
Nathan Siegel ◽  
Greg Kolb
Keyword(s):  
Solar Energy ◽  
Power Systems ◽  
Solid Particle ◽  
Computational Models ◽  
Internal Cavity ◽  
Direct Absorption ◽  
Experimental Basis ◽  
Current Effort ◽  
Concentrated Solar Energy ◽  
Central Receiver

A prototype direct absorption central receiver, called the solid particle receiver (SPR), was recently built and tested on-sun at Sandia National Laboratories. The SPR consists of a 6 m tall cavity through which a 1 m wide curtain of spherical ceramic particles is dropped and directly heated with concentrated solar energy. The focus of this current effort is to provide an experimental basis for the validation of computational models that have been created to support the development of the solid particle receiver as a solar interface for thermochemical hydrogen and solar power systems. In this paper we present detailed information on the design and construction of the receiver as well as test data including the temperature change of the particles and internal cavity walls. We conclude with a discussion of the steps needed to demonstrate the overall feasibility of the SPR concept.

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