scholarly journals Concentrating Solar Power Tower: Latest Status Report and Survey of Development Trends

2017 ◽  
Author(s):  
Albert Boretti ◽  
Stefania Castelletto ◽  
Sarim Al-Zubaidy
Keyword(s):  
Solar Power ◽  
Combined Cycle ◽  
Status Report ◽  
Power Block ◽  
Solar Plant ◽  
Thermal Desalination ◽  
Design Values ◽  
Solar Power Tower ◽  
Solar Field ◽  
Installed Capacity

The paper examines design and operating data of current concentrated solar power (CSP) solar tower (ST) plants. The study includes CSP with or without boost by combustion of natural gas (NG), and with or without thermal energy storage (TES). The latest, actual specific costs per installed capacity are very high, 6085 $/kW for Ivanpah Solar Electric Generating System (ISEGS) with no TES, and 9227 $/kW for Crescent Dunes with TES. The actual production of electricity is very low and much less than the expected. The actual capacity factors are 22% for ISEGS, despite combustion of a significant amount of NG largely exceeding the planned values, and 13% for Crescent Dunes. The design values were 33% and 52%. The study then reviews the proposed technology updates to produce better ratio of solar field power to electric power, better capacity factor, better matching of production and demand, lower plant’s cost, improved reliability and increased life span of plant’s components. The key areas of progress are found in materials and manufacturing processes, design of solar field and receiver, receiver and power block fluids, power cycle parameters, optimal management of daily and seasonal operation of the plant, new TES concepts, integration of solar plant with thermal desalination, integration of solar plant with combined cycle gas turbine (CCGT) installations and finally, specialization and regionalization of the project specification.

scholarly journals Concentrating solar power tower technology: present status and outlook

2019 ◽  
Vol 8 (1) ◽  
pp. 10-31 ◽  
Author(s):  
Albert Boretti ◽  
Stefania Castelletto ◽  
Sarim Al-Zubaidy
Keyword(s):  
Solar Power ◽  
Combined Cycle ◽  
Power Cycle ◽  
Power Block ◽  
Solar Plant ◽  
Thermal Desalination ◽  
Design Values ◽  
Solar Power Tower ◽  
Solar Field ◽  
Installed Capacity

Abstract The paper examines design and operating data of current concentrated solar power (CSP) solar tower (ST) plants. The study includes CSP with or without boost by combustion of natural gas (NG), and with or without thermal energy storage (TES). Latest, actual specific costs per installed capacity are high, 6,085 $/kW for Ivanpah Solar Electric Generating System (ISEGS) with no TES, and 9,227 $/kW for Crescent Dunes with TES. Actual production of electricity is low and less than the expected. Actual capacity factors are 22% for ISEGS, despite combustion of a significant amount of NG exceeding the planned values, and 13% for Crescent Dunes. The design values were 33% and 52%. The study then reviews the proposed technology updates to improve ratio of solar field power to electric power, capacity factor, matching of production and demand, plant’s cost, reliability and life span of plant’s components. Key areas of progress are found in materials and manufacturing processes, design of solar field and receiver, receiver and power block fluids, power cycle parameters, optimal management of daily and seasonal operation of the plant, new TES concepts, integration of solar plant with thermal desalination or combined cycle gas turbine (CCGT) installations and specialization of project.

scholarly journals Advances in Concentrating Solar Power Tower

2017 ◽  
Author(s):  
Albert Boretti ◽  
Stefania Castelletto ◽  
Sarim Al-Zubaidy
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Solar Power ◽  
Combined Cycle ◽  
Power Block ◽  
Solar Plant ◽  
Thermal Desalination ◽  
Solar Power Tower ◽  
Solar Field

The paper examines design and operating data of current concentrated solar power (CSP) solar tower (ST) plants. The study includes CSP with or without boost by combustion of natural gas (NG) and with or without thermal energy storage (TES). The study then reviews the novel trends to produce better ratio of solar field power to electric power, better capacity factor, better matching of production and demand, lower plant’s cost and increased life span of plant’s components. The key areas of progress of CSP ST technology briefly summarized are materials and manufacturing processes, design of solar field and receiver, receiver and power block fluids, power cycle parameters, optimal management of daily and seasonal operation of the plant, new thermal energy storage concepts, integration of solar plant with thermal desalination, integration of solar plant with combined cycle gas turbine (CCGT) installations and finally, specialization and regionalization of the project specification.

The Impact of Hybrid Wet/Dry Cooling on Concentrating Solar Power Plant Performance

2010 ◽  
Author(s):  
Michael J. Wagner ◽  
Charles Kutscher
Keyword(s):  
Solar Power ◽  
Rankine Cycle ◽  
Plant Performance ◽  
Concentrating Solar Power ◽  
Heat Rejection ◽  
Power Block ◽  
Lower Temperature ◽  
Solar Field ◽  
The Impact ◽  
Dry Cooling

This paper examines the sensitivity of Rankine cycle plant performance to dry cooling and hybrid (parallel) wet/dry cooling combinations with the traditional wet-cooled model as a baseline. Plants with a lower temperature thermal resource are more sensitive to fluctuations in cooling conditions, and so the lower temperature parabolic trough plant is analyzed to assess the maximum impact of alternative cooling configurations. While low water-use heat rejection designs are applicable to any technology that utilizes a Rankine steam cycle for power generation, they are of special interest to concentrating solar power (CSP) technologies that are located in arid regions with limited water availability. System performance is evaluated using hourly simulations over the course of a year at Daggett, CA. The scope of the analysis in this paper is limited to the power block and the heat rejection system, excluding the solar field and thermal storage. As such, water used in mirror washing, maintenance, etc., is not included. Thermal energy produced by the solar field is modeled using NREL’s Solar Advisor Model (SAM).

Process Control and Design Issues in a Concentrated Solar Power Trough Plant With Thermal Storage

2010 ◽  
Author(s):  
Brad Bullington
Keyword(s):  
Process Control ◽  
Steam Turbine ◽  
Closed Loop ◽  
Solar Power ◽  
Thermal Storage ◽  
Design Issues ◽  
Concentrated Solar Power ◽  
Power Block ◽  
On Line ◽  
Solar Field

The power block for a conventional Concentrated Solar Power (CSP) Plant without thermal storage follows standard power block design practices. A closed loop heat transfer fluid (HTF) is heated in the solar field, which consists of multiple solar collector assemblies (SCAs). Heat exchangers use the heat from the HTF to generate and superheat steam. The steam is sent to a steam turbine, which generates electricity. The cooled HTF is recirculated back to the solar field. In an effort to shift the period of power generation or to maintain full power output during non-peak periods of operation, a thermal energy storage (TES) system can be added. This entails adding a second closed loop fluid that is heated by the HTF during sufficient radiation hours, which in turn can heat the HTF that is supplied to the power block during periods of non-peak radiation. This article discusses the process control and design issues for the integrated solar field, TES system and power block for these plants. The article will address the following: 1) Operations with the Solar field on-line, TES system off-line, and STG on-line. 2) Operations with the Solar field on-line, TES system charging, and STG on-line. 3) Operations with the Solar field on-line, the TES system discharging, and STG on-line. 4) Operations with the solar field off-line, the TES system discharging, and the STG on-line. 5) Operations with the Solar field on-line, the TES system charging, and STG off-line. 6) Steam Turbine Issues. 7) Freeze protection. 8) HTF/TES Heat Exchanger. 9) Circulating Water and Surface Condenser.

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.

Thermoeconomic Analysis of Combined Cycle Coupled With Parabolic Trough Solar Plant

2013 ◽  
Author(s):  
M. D. Duran ◽  
E. A. Rincón ◽  
I. Martínez ◽  
A. Lentz
Keyword(s):  
Optimum Design ◽  
Combined Cycle ◽  
Working Fluid ◽  
Steam Generation ◽  
Parabolic Trough ◽  
Thermal Systems ◽  
Load Variations ◽  
Solar Plant ◽  
Combined Cycle Plant ◽  
Solar Field

Parabolic trough technology is currently one of the most extended solar thermal systems for the production of electricity. This paper describes a thermo-economic study of an integrated, combined-cycle parabolic trough power plant. The parabolic trough plant is considered an economizer or a superheater of the HRSG (heat recovery steam generator). The main objective is to obtain the optimum design of the different sections of the boiler and the size of the parabolic field. The configurations analyzed are two pressure levels with and without a reheater. A Euro Trough (ET) concentrator was used in this study, the working fluid being water with direct steam generation. There will be no problem with the evaporation in the absorber, since the solar plant will be the economizer of the HRSG and an approach point greater than 3°C is considered. The methodology applied for the optimization is Genetic Algorithms. This methodology was employed in previous works developed by the authors and yielded good results. So that method is applied to the configurations analyzed but including the parabolic trough plant. As a result, a thermoeconomic optimum design of a parabolic trough plant used as the section of the HRSG is obtained. The results show that the solar field increases the power and efficiency of the combined-cycle plant during the operation and makes it less susceptible to load variations.

4E analysis of three different configurations of a combined cycle power plant integrated with a solar power tower system

2021 ◽  
Vol 48 ◽  
pp. 101599
Author(s):  
MohammadAmin Javadi ◽  
Niloofar Jafari Najafi ◽  
Mani Khalili Abhari ◽  
Roohollah Jabery ◽  
Hamidreza Pourtaba
Keyword(s):  
Power Plant ◽  
Solar Power ◽  
Combined Cycle ◽  
Combined Cycle Power Plant ◽  
Solar Power Tower ◽  
Tower System

scholarly journals A Discussion of Possible Approaches to the Integration of Thermochemical Storage Systems in Concentrating Solar Power Plants

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4940
Author(s):  
Michela Lanchi ◽  
Luca Turchetti ◽  
Salvatore Sau ◽  
Raffaele Liberatore ◽  
Stefano Cerbelli ◽  
...  
Keyword(s):  
Power Plants ◽  
Solar Power ◽  
Storage Systems ◽  
Storage System ◽  
Reactive Systems ◽  
Operating Conditions ◽  
Storage Unit ◽  
Power Block ◽  
Solar Plant ◽  
Term Energy

One of the most interesting perspectives for the development of concentrated solar power (CSP) is the storage of solar energy on a seasonal basis, intending to exploit the summer solar radiation in excess and use it in the winter months, thus stabilizing the yearly production and increasing the capacity factor of the plant. By using materials subject to reversible chemical reactions, and thus storing the thermal energy in the form of chemical energy, thermochemical storage systems can potentially serve to this purpose. The present work focuses on the identification of possible integration solutions between CSP plants and thermochemical systems for long-term energy storage, particularly for high-temperature systems such as central receiver plants. The analysis is restricted to storage systems potentially compatible with temperatures ranging from 700 to 1000 °C and using gases as heat transfer fluids. On the basis of the solar plant specifications, suitable reactive systems are identified and the process interfaces for the integration of solar plant/storage system/power block are discussed. The main operating conditions of the storage unit are defined for each considered case through process simulation.

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