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.

Advanced Thermal Energy Storage Technology for Parabolic Trough

Solar Energy ◽  
2003 ◽  
Author(s):  
Rainer Tamme ◽  
Doerte Laing ◽  
Wolf-Dieter Steinmann
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Heat Storage ◽  
Storage Systems ◽  
Storage System ◽  
Discharge Process ◽  
Sensible Heat ◽  
Parabolic Trough ◽  
Storage Unit ◽  
Solid Media

The availability of storage capacity plays an important role for the economic success of solar thermal power plants. For today’s parabolic trough power plants, sensible heat storage systems with operation temperatures between 300°C and 390°C can be used. A solid media sensible heat storage system is developed and will be tested in a parabolic trough test loop at PSA, Spain. A simulation tool for the analysis of the transient performance of solid media sensible heat storage systems has been implemented. The computed results show the influence of various parameters describing the storage system. While the effects of the storage material properties are limited, the selected geometry of the storage system is important. The evaluation of a storage system demands the analysis of the complete power plant and not only of the storage unit. Then the capacity of the system is defined by the electric work produced by the power plant, during a discharge process of the storage unit. The choice of the operation strategy for the storage system proves to be essential for the economic optimization.

Advanced Thermal Energy Storage Technology for Parabolic Trough

2004 ◽  
Vol 126 (2) ◽  
pp. 794-800 ◽  
Author(s):  
Rainer Tamme ◽  
Doerte Laing ◽  
Wolf-Dieter Steinmann
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Heat Storage ◽  
Storage Systems ◽  
Storage System ◽  
Discharge Process ◽  
Sensible Heat ◽  
Parabolic Trough ◽  
Storage Unit ◽  
Solid Media

The availability of storage capacity plays an important role for the economic success of solar thermal power plants. For today’s parabolic trough power plants, sensible heat storage systems with operation temperatures between 300°C and 390°C can be used. A solid media sensible heat storage system is developed and will be tested in a parabolic trough test loop at PSA, Spain. A simulation tool for the analysis of the transient performance of solid media sensible heat storage systems has been implemented. The computed results show the influence of various parameters describing the storage system. While the effects of the storage material properties are limited, the selected geometry of the storage system is important. The evaluation of a storage system demands the analysis of the complete power plant and not only of the storage unit. Then the capacity of the system is defined by the electric work produced by the power plant during a discharge process of the storage unit. The choice of the operation strategy for the storage system proves to be essential for the economic optimization.

scholarly journals Energy storage systems for drilling rigs

2021 ◽  
Author(s):  
Evgeniy Chupin ◽  
Konstantin Frolov ◽  
Maxim Korzhavin ◽  
Oleg Zhdaneev
Keyword(s):  
Energy Storage ◽  
Power Plants ◽  
Storage Systems ◽  
Storage System ◽  
Energy Storage Systems ◽  
Storage Unit ◽  
Power Circuit ◽  
Operating Modes ◽  
Drilling Rig ◽  
Drilling Rigs

AbstractEnergy storage systems are an important component of the energy transition, which is currently planned and launched in most of the developed and developing countries. The article outlines development of an electric energy storage system for drilling based on electric-chemical generators. Description and generalization are given for the main objectives for this system when used on drilling rigs isolated within a single pad, whether these are fed from diesel gensets, gas piston power plants, or 6–10 kV HV lines. The article studies power operating modes of drilling rigs, provides general conclusions and detailed results for one of more than fifty pads. Based on the research, a generic architecture of the energy storage module is developed, and an engineering prototype is built. The efficiency of using a hybrid energy accumulation design is proven; the design calls for joint use of Li-ion cells and supercapacitors, as well as three-level inverters, to control the storage system. The article reviews all possible options for connecting the system into a unified rig power circuit, and the optimum solution is substantiated. The research into the rig operating modes and engineering tests yielded a simplified mathematical model of an energy storage unit integrated into the power circuit of a drilling rig. The model is used to forecast the payoff period of the system for various utilization options and rig operating modes. The findings of this study can help to better understand which type of storage system is the most efficient for energy systems with temporary high load peaks, like drilling rigs.

Solid Media Thermal Storage Development and Analysis of Modular Storage Operation Concepts for Parabolic Trough Power Plants

2007 ◽  
Vol 130 (1) ◽  
Author(s):  
Doerte Laing ◽  
Wolf-Dieter Steinmann ◽  
Michael Fiß ◽  
Rainer Tamme ◽  
Thomas Brand ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Power Plants ◽  
Heat Storage ◽  
Storage Systems ◽  
Storage System ◽  
Sensible Heat ◽  
Economic Optimization ◽  
Parabolic Trough ◽  
Solid Media ◽  
Exergetic Analysis

Cost-effective integrated storage systems are important components for the accelerated market penetration of solarthermal power plants. Besides extended utilization of the power block, the main benefits of storage systems are improved efficiency of components, and facilitated integration into the electrical grids. For parabolic trough power plants using synthetic oil as the heat transfer medium, the application of solid media sensible heat storage is an attractive option in terms of investment and maintenance costs. For commercial oil trough technology, a solid media sensible heat storage system was developed and tested. One focus of the project was the cost reduction of the heat exchanger; the second focus lies in the energetic and exergetic analysis of modular storage operation concepts, including a cost assessment of these concepts. The results show that technically there are various interesting ways to improve storage performance. However, these efforts do not improve the economical aspect. Therefore, the tube register with straight parallel tubes without additional structures to enhance heat transfer has been identified as the best option concerning manufacturing aspects and investment costs. The results of the energetic and exergetic analysis of modular storage integration and operation concepts show a significant potential for economic optimization. An increase of more than 100% in storage capacity or a reduction of more than a factor of 2 in storage size and therefore investment cost for the storage system was calculated. A complete economical analysis, including the additional costs for this concept on the solar field piping and control, still has to be performed.

scholarly journals Analysis of Different Energy Storage Technologies for Microgrids Energy Management

2020 ◽  
Vol 173 ◽  
pp. 03004
Author(s):  
Darío Benavides ◽  
Paúl Arévalo ◽  
Luis G. Gonzalez ◽  
José A. Aguado
Keyword(s):  
Energy Storage ◽  
Energy Management ◽  
Storage Systems ◽  
Storage System ◽  
Lithium Ion ◽  
Operating Conditions ◽  
Energy Storage Systems ◽  
Efficiency Performance ◽  
Storage Technologies ◽  
Different Levels

The importance of energy storage systems is increasing in microgrids energy management. In this study, an analysis is carried out for different types of energy storage technologies commonly used in the energy storage systems of a microgrid, such as: lead acid batteries, lithium ion batteries, redox vanadium flux batteries and supercapacitors. In this work, it is analyzed the process of charging and discharging (slow and fast) in these systems, the calculation of energy efficiency, performance and energy supplied under different load levels, in its normal operating conditions and installed power capacity is developed. The results allow us to choose the optimal conditions of charge and discharge at different levels of reference power, analyzing the strengths and weaknesses of the characteristics of each storage system within a microgrid.

A Thermodynamic Model of a High Temperature Hybrid Compressed Air Energy Storage System for Grid Storage

2016 ◽  
Author(s):  
Sammy Houssainy ◽  
Reza Baghaei Lakeh ◽  
H. Pirouz Kavehpour
Keyword(s):  
Global Warming ◽  
Energy Storage ◽  
Power Plants ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Storage System ◽  
Energy Storage System ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Energy Storage Systems

Human activity is overloading our atmosphere with carbon dioxide and other global warming emissions. These emissions trap heat, increase the planet’s temperature, and create significant health, environmental, and climate issues. Electricity production accounts for more than one-third of U.S. global warming emissions, with the majority generated by coal-fired power plants. These plants produce approximately 25 percent of total U.S. global warming emissions. In contrast, most renewable energy sources produce little to no global warming emissions. Unfortunately, generated electricity from renewable sources rarely provides immediate response to electrical demands, as the sources of generation do not deliver a regular supply easily adjustable to consumption needs. This has led to the emergence of storage as a crucial element in the management of energy, allowing energy to be released into the grid during peak hours and meet electrical demands. Compressed air energy storage can potentially allow renewable energy sources to meet electricity demands as reliably as coal-fired power plants. Most compressed air energy storage systems run at very high pressures, which possess inherent problems such as equipment failure, high cost, and inefficiency. This research aims to illustrate the potential of compressed air energy storage systems by illustrating two different discharge configurations and outlining key variables, which have a major impact on the performance of the storage system. Storage efficiency is a key factor to making renewable sources an independent form of sustainable energy. In this paper, a comprehensive thermodynamic analysis of a compressed air energy storage system is presented. Specifically, a detailed study of the first law of thermodynamics of the entire system is presented followed by a thorough analysis of the second law of thermodynamics of the complete system. Details of both discharge and charge cycles of the storage system are presented. The first and second law based efficiencies of the system are also presented along with parametric studies, which demonstrates the effects of various thermodynamic cycle variables on the total round-trip efficiency of compressed air energy storage systems.

Energy, Exergy, Economic and Environmental Analyses of Air-Based High-Temperature Thermal Energy and Electricity Storage: Impacts of Off-Design Operation

2020 ◽  
pp. 1-19
Author(s):  
Hamid Reza Rahbari ◽  
Ahmad Arabkoohsar ◽  
Mohsen Jannatabadi
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Thermal Energy ◽  
Power Plants ◽  
Pressure Ratio ◽  
Storage System ◽  
Energy Storage System ◽  
Storage Unit ◽  
Electricity Storage ◽  
Energy Storage Unit

Abstract The present study presents a comprehensive assessment of impacts of the off-design operation of an air-based high-temperature thermal energy and electricity storage system on its energy, exergy, economic, and environmental aspects. Here, the effects of load variations on the mass flow rate, pressure ratio, and isentropic efficiency of the turbomachinery are considered to give the most accurate possible picture of the techno-economic aspects of the performance of the system. The results of such an assessment will be extremely useful in achieving the optimal performance of the energy storage system while working parallel with solar and wind power plants. The results prove that the system will present the high overall energy and exergy efficiencies of 91.5% and 88.16% when working at full load all the time. These indices, however, will be as low as 67.83% and 65.88% at an annual average operation load of 70% and even further lower to 34% and 32.73% at 40% load, respectively. The payback period of the system will be decreased from 11 to 23 years when the operation load falls from 100% to 80%. The environmental effects of such an energy storage unit for an energy market like Denmark (for instance) will be about 6355, 3227, and 823 tonnes of reduced equivalent carbon-dioxide when working at 100%, 70%, and 40% loads, respectively.

Numerical modelling of a 100-Wh lab-scale thermochemical heat storage system for concentrating solar power plants

2016 ◽  
Author(s):  
Sandra Álvarez de Miguel ◽  
Selvan Bellan ◽  
J. M. García de María ◽  
José González-Aguilar ◽  
Manuel Romero
Keyword(s):  
Numerical Modelling ◽  
Power Plants ◽  
Solar Power ◽  
Heat Storage ◽  
Storage System ◽  
Concentrating Solar Power ◽  
Thermochemical Heat Storage ◽  
Solar Power Plants
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