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Author Caceres, G.; Fullenkamp, K.; Montane, M.; Naplocha, K.; Dmitruk, A.
Title Encapsulated Nitrates Phase Change Material Selection for Use as Thermal Storage and Heat Transfer Materials at High Temperature in Concentrated Solar Power Plants Type
Year 2017 Publication Energies Abbreviated Journal Energies
Volume 10 Issue 9 Pages 21 pp
Keywords EPCM; nitrates; thermal energy storage (TES); heat transfer materials; CSP
Abstract In the present paper, the finite element method is used to perform an exhaustive analysis of the thermal behavior of encapsulated phase change materials (EPCMs), which includes an assessment of several materials in order to identify the best combination of PCM and shell material in terms of thermal energy storage, heat transfer rate, cost of materials, limit of pressure that they can support and other criteria. It is possible to enhance the heat transfer rate without a considerable decrease of the thermal energy storage density, by increasing the thickness of the shell. In the first examination of thermomechanical coupling effects, the technical feasibility can be determined if the EPCM dimensions are designed considering the thermal expansion and the tensile strength limit of the materials. Moreover, when a proper EPCM shell material and PCM composition is used, and compared with the current storage methods of concentrated solar power (CSP) plants, the use of EPCM allows one to enhance significantly the thermal storage, reaching more than 1.25 GJ/m(3) of energy density.
Address [Caceres, Gustavo; Fullenkamp, Karina; Montane, Macarena] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Ave Diagonal Las Torres 2640, Santiago 7941169, Chile, Email: gustavo.caceres@uai.cl;
Corporate Author Thesis
Publisher Mdpi Ag Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1996-1073 ISBN Medium
Area Expedition Conference
Notes WOS:000411225200074 Approved
Call Number UAI @ eduardo.moreno @ Serial 805
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Author Corral, N.; Anrique, N.; Fernandes, D.; Parrado, C.; Caceres, G.
Title Power, placement and LEC evaluation to install CSP plants in northern Chile Type
Year 2012 Publication Renewable & Sustainable Energy Reviews Abbreviated Journal Renew. Sust. Energ. Rev.
Volume 16 Issue 9 Pages 6678-6685
Keywords CSP plant; Solar radiation; Northern Chile; LEC; Power plant capacity; Back-up and TES system; Placement evaluation
Abstract Chile is expecting a 5.4% growth in energy consumption per year until 2030, requiring new and better solutions for the upward trend of its electricity demand. This state leads to select and study one of the potential alternatives for electricity generation: concentrated solar power (CSP) plants. Such renewable technology found in Chile a very favorable condition. Recent researches indicate Atacama Desert as one of the best regions for solar energy worldwide, having an average radiation higher than in places where CSP plants are currently implemented, e.g. Spain and USA. The aim of this study is to present an analysis of levelized energy cost (LEC) for different power capacities of CSP plants placed in distinct locations in northern Chile. The results showed that CSP plants can be implemented in Atacama Desert with LECs around 19 (sic)US$/kWh when a gas-fired backup and thermal energy storage (TES) systems are fitted. This value increases to approximately 28 (sic)US$/kWh if there is no backup system. (C) 2012 Elsevier Ltd. All rights reserved.
Address [Corral, Nicolas; Anrique, Nicolas; Fernandes, Dalila; Parrado, Cristobal; Caceres, Gustavo] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Santiago, Chile, Email: n.anrique@ieee.org
Corporate Author Thesis
Publisher Pergamon-Elsevier Science Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1364-0321 ISBN Medium
Area Expedition Conference
Notes WOS:000312822300012 Approved
Call Number UAI @ eduardo.moreno @ Serial 258
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Author Montane, M.; Caceres, G.; Villena, M.; O'Ryan, R.
Title Techno-Economic Forecasts of Lithium Nitrates for Thermal Storage Systems Type
Year 2017 Publication Sustainability Abbreviated Journal Sustainability
Volume 9 Issue 5 Pages 15 pp
Keywords CSP; lithium based nitrates; thermal energy storage; lithium market
Abstract Thermal energy storage systems (TES) are a key component of concentrated solar power (CSP) plants that generally use a NaNO3/KNO3 mixture also known as solar salt as a thermal storage material. Improvements in TES materials are important to lower CSP costs, increase energy efficiency and competitiveness with other technologies. A novel alternative examined in this paper is the use of salt mixtures with lithium nitrate that help to reduce the salt's melting point and improve thermal capacity. This in turn allows the volume of materials required to be reduced. Based on data for commercial plants and the expected evolution of the lithium market, the technical and economic prospects for this alternative are evaluated considering recent developments of Lithium Nitrates and the uncertain future prices of lithium. Through a levelized cost of energy (LCOE) analysis it is concluded that some of the mixtures could allow a reduction in the costs of CSP plants, improving their competitiveness.
Address [Montane, Macarena; Caceres, Gustavo; O'Ryan, Raul] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Ave Diagonal Las Torres 2640, Santiago 7941169, Chile, Email: macarena.montane@p2030.uai.cl;
Corporate Author Thesis
Publisher Mdpi Ag Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2071-1050 ISBN Medium
Area Expedition Conference
Notes WOS:000404127800135 Approved
Call Number UAI @ eduardo.moreno @ Serial 742
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Author Parrado, C.; Girard, A.; Simon, F.; Fuentealba, E.
Title 2050 LCOE (Levelized Cost of Energy) projection for a hybrid PV (photovoltaic)-CSP (concentrated solar power) plant in the Atacama Desert, Chile Type
Year 2016 Publication Energy Abbreviated Journal Energy
Volume 94 Issue Pages 422-430
Keywords LCOE; PV; CSP; Mining industry; Solar resource; Hybrid
Abstract This study calculates the LCOE (Levelized Cost of Energy) on the PSDA (Atacama Solar Platform) for a solar-solar energy mix with the objective of evaluate new options for continuous energy delivery. LCOE was calculated for three 50 MW (megawatt) power plants: A PV (photovoltaic), a CSP (concentrated solar power) plant with 15 h TES (thermal energy storage) and a hybrid PV-CSP plant constituted with 20 MWp of PV and 30 MW of CSP with 15 h TES. Calculations present two scenario projections (Blue Map and Roadmap) until 2050 for each type of plant. Due to the huge solar resource available in northern Chile, the PV-CSP hybrid plant results to be a feasible option for electricity generation, as well as being effectively able to meet electricity demand profile of the mining industry present in the area. This type of energy could mitigate long-term energy costs for the heavy mining activity, as well as the country CO2 emissions. Findings point out that PV-CSP plants are a feasible option able to contribute to the continuous delivery of sustainable electricity in northern Chile. Moreover, this option can also contribute towards electricity price stabilization, thus benefiting the mining industry, as well as reducing Chile's carbon footprint. (C) 2015 Elsevier Ltd. All rights reserved.
Address [Parrado, C.; Fuentealba, E.] Univ Antofagasta, CDEA, Ave Univ, Antofagasta 02800, Chile, Email: cristobal.parrado@uantof.cl
Corporate Author Thesis
Publisher Pergamon-Elsevier Science Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0360-5442 ISBN Medium
Area Expedition Conference
Notes WOS:000370111300035 Approved
Call Number UAI @ eduardo.moreno @ Serial 591
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