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Author Agostini, C.A.; Nasirov, S.; Silva, C.
Title Solar PV Planning Toward Sustainable Development in Chile: Challenges and Recommendations Type
Year 2016 Publication Journal Of Environment & Development Abbreviated Journal J. Environ. Dev.
Volume 25 Issue 1 Pages 25-46
Keywords solar energy; sustainability; development; Chile; policy challenges
Abstract Over the past decade, the promotion of renewable energy projects in Chile, especially solar energy projects, has become increasingly important, as energy dependence from foreign fossil fuels has increased and concerns regarding climate change continue to grow, posing a significant challenge to the local economy. Even though recent developments toward a more sustainable energy matrix in Chile have significantly increased the investment in the solar energy sector, social and environmental fragilities, combined with the lack of well-functioning institutions and the historical marginalization of indigenous communities who have been affected by several energy projects, result in gradually increasing conflictive situations. Unless proper mechanisms are designed and implemented to rapidly and correctly address these challenges, Chile could miss the opportunities that solar energy projects can provide to the development of its communities and to the economic growth of its regions. This article studies solar photovoltaics planning in Chile, focusing on the recent developments and the main challenges ahead, and proposes policy recommendations for effectively addressing these challenges.
Address [Agostini, Claudio A.] Univ Adolfo Ibanez, Econ, Sch Govt, Santiago, Chile, Email: claudio.agostini@uai.cl
Corporate Author Thesis
Publisher Sage Publications Inc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1070-4965 ISBN Medium
Area Expedition Conference
Notes WOS:000370428400002 Approved
Call Number UAI @ eduardo.moreno @ Serial 588
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Author Agostini, C.A.; Silva, C.; Nasirov, S.
Title Failure of Energy Mega-Projects in Chile: A Critical Review from Sustainability Perspectives Type
Year 2017 Publication Sustainability Abbreviated Journal Sustainability
Volume 9 Issue 6 Pages 17 pp
Keywords energy mega-projects; Chile; environmental evaluation; sustainability
Abstract A number of successive energy crises over the last decade due to the lack of a balanced investment planning in the energy sector in Chile has led to a strong dependence on external sources and also doubled energy prices in the country, thus posing a significant challenge to the local economy. With the purpose of reaching long-term goals while simultaneously addressing short-term urgencies, Chile seeks to build a consistent and integrated energy policy in order to attract investment in the sector. Despite an overall attractive investment climate and encouraging market conditions in the country, the energy sector has been adversely affected, in particular, by the communities' opposition to mega-projects based on their expected environmental and social impacts. The study highlights recent experiences of energy generation mega-projects in terms of addressing aspects of sustainability. Based on these experiences, it discusses underdeveloped role of environmental evaluations and the main regulatory challenges ahead, recommending then public policies to effectively address these challenges.
Address [Agostini, Claudio A.] Univ Adolfo Ibanez, Sch Govt, Ave Diagonal Las Torres 2640, Santiago 7941169, Chile, Email: claudio.agostini@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:000404133200195 Approved
Call Number UAI @ eduardo.moreno @ Serial 745
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Author Barroso, L.; Munoz, FD.; Bezerra, B.; Rudnick, H.; Cunha, G.
Title Zero-Marginal-Cost Electricity Market Designs: Lessons Learned From Hydro Systems in Latin America Might Be Applicable for Decarbonization Type
Year 2021 Publication IEEE Power & Energy Magazine Abbreviated Journal IEEE Power Energy Mag.
Volume 19 Issue 1 Pages 64-73
Keywords Renewable energy sources; Solar power generation; Low-carbon economy; Wind energy generation
Abstract Large reductions in the cost of renewable energy technologies, particularly wind and solar, as well as various instruments used to achieve decarbonization targets (e.g., renewable mandates, renewable auctions, subsidies, and carbon pricing mechanisms) are driving the rapid growth of investments in these generation technologies worldwide.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1540-7977 ISBN Medium
Area Expedition Conference
Notes WOS:000607792900001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1324
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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 Fernandes, D.; Pitie, F.; Caceres, G.; Baeyens, J.
Title Thermal energy storage: “How previous findings determine current research priorities” Type
Year 2012 Publication Energy Abbreviated Journal Energy
Volume 39 Issue 1 Pages 246-257
Keywords Thermal energy storage; Heat transfer enhancement; PCM; Metal foam; Energy storage; Composite materials
Abstract Thermal energy storage is an expanding field within the subject of renewable energy technologies. After a listing of the different possibilities available for energy storage, this paper provides a comparison of various materials for High Temperature Thermal Energy Storage (HTTS). Several attributes and needs of each solution are listed. One in particular is using the latent heat as one of the most efficient ways to store thermal energy. The mixture of phase change material (PCM) embedded in a metal foam is optimising the thermal properties of the material for latent heat energy storage. The results of previous studies show that mechanical and thermal properties of foam were extensively studied separately. This paper highlights the potential for an advanced study of thermo-mechanical properties of metal foams embedded with PCM. (c) 2012 Elsevier Ltd. All rights reserved.
Address [Pitie, F.] Univ Warwick, Sch Engn, Coventry CV8 1JE, W Midlands, England, Email: f.pitie@warwick.ac.uk
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:000302386400028 Approved
Call Number UAI @ eduardo.moreno @ Serial 209
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Author Fullenkamp, K.; Montane, M.; Caceres, G.; Araya-Letelier, G.
Title Review and selection of EPCM as TES materials for building applications Type
Year 2019 Publication International Journal Of Sustainable Energy Abbreviated Journal Int. J. Sustain. Energy
Volume 38 Issue 6 Pages 561-582
Keywords Encapsulated phase change materials; building applications; thermal energy storage materials
Abstract In order to improve the thermal efficiency of building thermal energy storage (TES) systems, the feasibility of using encapsulated phase change materials (EPCMs) as heat storage media is analysed in this work. Specifically, the finite element method is used to perform thermal behaviour analyses of several EPCMs. These analyses include technical and economic assessments in order to identify the best combination of PCM and shell material, using as main parameters: thermal energy storage, heat transfer rate, materials cost, among others. The results show that EPCMs composed by Na2SO4 center dot 6H(2)O as PCM and covered by stainless steel highlight as TES materials.
Address [Fullenkamp, Karina; Montane, Macarena; Caceres, Gustavo] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Santiago, Chile, Email: kfullenkamp@alumnos.uai.cl
Corporate Author Thesis
Publisher Taylor & Francis Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1478-6451 ISBN Medium
Area Expedition Conference
Notes WOS:000470140300004 Approved
Call Number UAI @ eduardo.moreno @ Serial 1028
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Author Genco, F.; Genco, G.
Title Nuclear desalination in Chile: a competitive solution Type
Year 2019 Publication Desalination And Water Treatment Abbreviated Journal Desalin. Water Treat.
Volume 140 Issue Pages 24-34
Keywords Small modular reactors; Chile 2050 energy policy; Nuclear desalination; IAEA DEEP 5 software
Abstract Renewable energy sources are considered the main drive for developing at least 70% of the total energy in Chile by 2050. All major international greenhouse gases reduction agreements include growth of renewable energy sources and nuclear power as the only ways to significantly reduce emissions by the decade 2040-50. Chile's energy production matrix still relies heavily on fossil fuels, making very difficult to match the goal targeted by international agreements. For these reasons, the possibility of using nuclear power plants is considered. Small modular reactors (SMRs) in particular seems particularly suitable for a country like Chile for many reasons: SMRs are scalable and can provide energy in remote locations with no or limited grids (Atacama desert); SMRs can cope easily with future demands for expansion, thanks to their modularity; SMRs are cost effective and use all the latest developments in safety. This paper examines, using IAEA DEEP 5 economic software, the costs of nuclear desalinated water produced for the Chilean mining industry. Comparisons with respect to existing fossil fuels solutions show that the final cost is very competitive and allow for significant reduction of CO2 emissions.
Address [Genco, Filippo] Adolfo Ibanez Univ, Fac Engn & Sci, Av Las Torres 2640,Edificio E, Santiago, Chile, Email: filippo.genco@uai.cl;
Corporate Author Thesis
Publisher Desalination Publ Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1944-3994 ISBN Medium
Area Expedition Conference
Notes WOS:000458914100004 Approved
Call Number UAI @ eduardo.moreno @ Serial 981
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Author Girard, A.; Gago, E.J.; Muneer, T.; Caceres, G.
Title Higher ground source heat pump COP in a residential building through the use of solar thermal collectors Type
Year 2015 Publication Renewable Energy Abbreviated Journal Renew. Energy
Volume 80 Issue Pages 26-39
Keywords Ground-source heat pump; Solar-assisted ground-source heat pump; Building space heating; Energy efficiency; Model simulation
Abstract This article investigates the feasibility of achieving higher performance from ground-source heat-pumps (GSHP) in space heating mode through the use of solar thermal collectors. A novel simulation tool for solar-assisted ground-source heat-pumps (SGSHP) is presented with an analysis of the influence of solar collectors on the improvement of heat pump performance. Solar radiation and climate temperature data of 19 European cities were used to perform simulations of SGSHP and GSHP systems considering a typical residential house. Overall performance coefficients (COPsys) varied from northern to southern locations between 4.4 and 5.8 for SGSHP and between 4.3 and 5.1 for GSHP. Results show that solar collectors coupling has more impact on performance improvement in regions that benefit from higher irradiance. However, greater running cost savings are achieved in milder climate conditions. Both heat-pump systems are able to effectively contribute to carbon footprint reductions for residential buildings, especially in countries where fossil fuels are the primary source of electricity generation. SGSHP payback periods are found between 8.5 and 23 years from northern to southern localities, making such heating system an economic heating option. SGSHPs are best suited for high irradiance and cool climate locations such as the mountainous regions in southern Europe. (C) 2015 Elsevier Ltd. All rights reserved.
Address [Girard, Aymeric] Adolfo Ibanez Univ, Fac Sci & Engn, Altos Del Sporting, Vina Del Mar, Chile, Email: aymeric.girard@gmail.com;
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 0960-1481 ISBN Medium
Area Expedition Conference
Notes WOS:000353732300003 Approved
Call Number UAI @ eduardo.moreno @ Serial 489
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Author Girard, A.; Gago, E.J.; Ordonez, J.; Muneer, T.
Title Spain's energy outlook: A review of PV potential and energy export Type
Year 2016 Publication Renewable Energy Abbreviated Journal Renew. Energy
Volume 86 Issue Pages 703-715
Keywords Solar energy; Spain; Electricity production; Economy; Grid parity
Abstract Spain must reduce its energy consumption by 23% and achieve 100% renewable energy in electricity generation by 2030. This paper presents the current energy scenario en Spain, and the outlooks for different renewable options, with special focus on photovoltaic (PV) solar energy. In 2012, Spain was the number two European country in terms of installed rewnewable energy power. Solar PV technology has the potential to meet Spain's future energy demand and its associated environmental challenges. This paper gives a review of solar energy economy at global scale for both PV and thermal power technologies. The Spanish energy scenario shows actual trends and progress made by solar power. Economic concepts of levelised cost of electricity and grid parity are presented. The financial analysis shows that PV electricity achieves grid parity at a plant profitability rate up to 7.26%. (C) 2015 Elsevier Ltd. All rights reserved.
Address [Girard, A.] Adolfo Ibanez Univ, Fac Sci & Engn, Altos Del Sporting, Vina del Mar, Chile, Email: aymeric.girard@gmail.com;
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 0960-1481 ISBN Medium
Area Expedition Conference
Notes WOS:000364248300071 Approved
Call Number UAI @ eduardo.moreno @ Serial 536
Permanent link to this record
 

 
Author Girard, A.; Muneer, T.; Caceres, G.
Title A validated design simulation tool for passive solar space heating: Results from a monitored house in West Lothian, Scotland Type
Year 2014 Publication Indoor And Built Environment Abbreviated Journal Indoor Built Environ.
Volume 23 Issue 3 Pages 353-372
Keywords Building design; Combination selection; Efficiency; Renewable energy; Simulation; Solar air heater
Abstract Determining the availability of renewable sources on a particular site would result in increasing the efficiency of buildings through appropriate design. The overall aim of the project is to develop a pioneering software tool allowing the assessment of possible energy sources for any building design project. The package would allow the user to simulate the efficiency of the Passive Solar Space Heating referred in the Low and Zero Carbon Energy Sources (LZCES) Strategic Guide stated by the Office of the Deputy Prime Minister (2006) and the Building Regulations. This research paper presents the tool for modelling the passive solar sources availability in relation to low-carbon building. A 3-month experimental set up monitoring a solar house in West Lothian, Scotland, was also undertaken to validate the simulation tool. Experimental and simulation results were found in good agreement following a one-to-one relationship demonstrating the ability of the newly developed tool to assess potential solar gain available for buildings. This modelling tool is highly valuable in consideration of the part L of the Building Regulations (updated in 2010).
Address [Girard, A.] Univ Adolfo Ibanez, Fac Sci & Engn, Altos Del Sporting, Vina Del Mar, Chile, Email: aymeric.girard@gmail.com
Corporate Author Thesis
Publisher Sage Publications Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1420-326x ISBN Medium
Area Expedition Conference
Notes WOS:000337571400003 Approved
Call Number UAI @ eduardo.moreno @ Serial 384
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Author Go, R.S.; Munoz, F.D.; Watson, J.P.
Title Assessing the economic value of co-optimized grid-scale energy storage investments in supporting high renewable portfolio standards Type
Year 2016 Publication Applied Energy Abbreviated Journal Appl. Energy
Volume 183 Issue Pages 902-913
Keywords Energy storage; Renewable portfolio standards; Transmission expansion planning
Abstract Worldwide, environmental regulations such as Renewable Portfolio Standards (RPSs) are being broadly adopted to promote renewable energy investments. With corresponding increases in renewable energy deployments, there is growing interest in grid-scale energy storage systems (ESS) to provide the flexibility needed to efficiently deliver renewable power to consumers. Our contribution in this paper is to introduce a unified generation, transmission, and bulk ESS expansion planning model subject to an RPS constraint, formulated as a two-stage stochastic mixed-integer linear program (MILP) optimization model, which we then use to study the impact of co-optimization and evaluate the economic interaction between investments in these three asset classes in achieving high renewable penetrations. We present numerical case studies using the 24-bus IEEE RTS-96 test system considering wind and solar as available renewable energy resources, and demonstrate that up to $180 million/yr in total cost savings can result from the co-optimization of all three assets, relative to a situation in which no ESS investment options are available. Surprisingly, we find that co-optimized bulk ESS investments provide significant economic value through investment deferrals in transmission and generation capacity, but very little savings in operational cost. Finally, we observe that planning transmission and generation infrastructure first and later optimizing ESS investments as is common in industry captures at most 1.7% ($3 million/yr) of the savings that result from co-optimizing all assets simultaneously. (C) 2016 Elsevier Ltd. All rights reserved.
Address [Go, Roderick S.] Johns Hopkins Univ, Baltimore, MD 21218 USA, Email: rgo@jhu.edu;
Corporate Author Thesis
Publisher Elsevier Sci Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0306-2619 ISBN Medium
Area Expedition Conference
Notes WOS:000395726400003 Approved
Call Number UAI @ eduardo.moreno @ Serial 718
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Author Goles, E.; Gomez, L.
Title Combinatorial game associated to the one dimensional Schelling's model of social segregation Type
Year 2018 Publication Natural Computing Abbreviated Journal Nat. Comput.
Volume 17 Issue 2 Pages 427-436
Keywords Combinatorial game; Schelling's social segregation model; Draw strategy; Energy
Abstract In this paper we consider a finite one-dimensional lattice with sites such that one of them is empty and the others have a black or white token. There are two players (one for each color), such that step by step alternately they move one of their tokens to the empty site trying to obtain a connected configuration. This game is related with the Schelling's social segregation model, where colors represent two different populations such that each one tries to take up a position with more neighbors as itself (same color). In this work we study strategies to play the game as well as their relation with the associated Schelling's one-dimensional case (line and cycle graphs).
Address [Goles, Eric; Gomez, Luis] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Santiago 2640, Chile, Email: eric.chacc@uai.cl;
Corporate Author Thesis
Publisher Springer Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1567-7818 ISBN Medium
Area Expedition Conference
Notes WOS:000432329500016 Approved
Call Number UAI @ eduardo.moreno @ Serial 869
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Author Goles, E.; Montealegre, P.; Vera, J.
Title Naming Game Automata Networks Type
Year 2016 Publication Journal Of Cellular Automata Abbreviated Journal J. Cell. Autom.
Volume 11 Issue 5-6 Pages 497-521
Keywords Automata networks; cellular automata; majority functions; energy operator; naming game; fixed points; limit cycles
Abstract In this paper we introduce automata networks to model some features of the emergence of a vocabulary related with the naming game model. We study the dynamical behaviour (attractors and convergence) of extremal and majority local functions.
Address [Goles, Eric; Vera, Javier] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Avda Diagonal Las Torres 2640, Santiago, Chile, Email: eric.chacc@uai.cl;
Corporate Author Thesis
Publisher Old City Publishing Inc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1557-5969 ISBN Medium
Area Expedition Conference
Notes WOS:000382426500007 Approved
Call Number UAI @ eduardo.moreno @ Serial 649
Permanent link to this record
 

 
Author Guevara, E.; Babonneau, F.; Homem-de-Mello, T.; Moret, S.
Title A machine learning and distributionally robust optimization framework for strategic energy planning under uncertainty Type
Year 2020 Publication Applied Energy Abbreviated Journal Appl. Energy
Volume 271 Issue Pages 18 pp
Keywords Strategic energy planning; Electricity generation; Uncertainty; Distributionally robust optimization; Machine learning
Abstract This paper investigates how the choice of stochastic approaches and distribution assumptions impacts strategic investment decisions in energy planning problems. We formulate a two-stage stochastic programming model assuming different distributions for the input parameters and show that there is significant discrepancy among the associated stochastic solutions and other robust solutions published in the literature. To remedy this sensitivity issue, we propose a combined machine learning and distributionally robust optimization (DRO) approach which produces more robust and stable strategic investment decisions with respect to uncertainty assumptions. DRO is applied to deal with ambiguous probability distributions and Machine Learning is used to restrict the DRO model to a subset of important uncertain parameters ensuring computational tractability. Finally, we perform an out-of-sample simulation process to evaluate solutions performances. The Swiss energy system is used as a case study all along the paper to validate the approach.
Address [Guevara, Esnil] Univ Adolfo Ibanez, PhD Program Ind Engn & Operat Res, Santiago, Chile, Email: frederic.babonneau@uai.cl
Corporate Author Thesis
Publisher Elsevier Sci Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0306-2619 ISBN Medium
Area Expedition Conference
Notes WOS:000540436500003 Approved
Call Number UAI @ eduardo.moreno @ Serial 1188
Permanent link to this record
 

 
Author Mahajan, S.M.; Asenjo, F.A.
Title Hot Fluids and Nonlinear Quantum Mechanics Type
Year 2015 Publication International Journal Of Theoretical Physics Abbreviated Journal Int. J. Theor. Phys.
Volume 54 Issue 5 Pages 1435-1449
Keywords Nonlinear quantum mechanics; Fluids; Temperature; High energy density physics
Abstract A hot relativistic fluid is viewed as a collection of quantum objects that represent interacting elementary particles. We present a conceptual framework for deriving nonlinear equations of motion obeyed by these hypothesized objects. A uniform phenomenological prescription, to affect the quantum transition from a corresponding classical system, is invoked to derive the nonlinear Schrodinger, Klein-Gordon, and Pauli-Schrodinger and Feynman-GellMaan equations. It is expected that the emergent hypothetical nonlinear quantum mechanics would advance, in a fundamental way, both the conceptual understanding and computational abilities, particularly, in the field of extremely high energy-density physics.
Address [Mahajan, Swadesh M.] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA, Email: mahajan@mail.utexas.edu;
Corporate Author Thesis
Publisher Springer/Plenum Publishers Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0020-7748 ISBN Medium
Area Expedition Conference
Notes WOS:000352858600004 Approved
Call Number UAI @ eduardo.moreno @ Serial 485
Permanent link to this record
 

 
Author Markou, G.; Genco, F.
Title Seismic assessment of small modular reactors: NuScale case study for the 8.8 Mw earthquake in Chile Type
Year 2019 Publication Nuclear Engineering And Design Abbreviated Journal Nucl. Eng. Des.
Volume 342 Issue Pages 176-204
Keywords Small Modular Reactors; Chile 2050 energy policy; 3D Detailed Finite Element Modeling; Seismic resistance; Soil-Structure Interaction; Reinforced concrete
Abstract Reducing greenhouse gas emissions and improving energy production sustainability is a paramount of Chile's 2050 energy policy. This though, is difficult to achieve without some degree of nuclear power involvement, given that the geography of the country consists of many areas that are practically off-grid, whereas cannot be developed and financially exploited due to the lack of basic commodities such as water and electricity. Recently small modular reactors (SMRs) have gained lots of attention by both researchers and world policy makers for their promised capabilities of enhanced safety systems, affordable costs and competitive scalability. SMRs can be located in remote areas and at this time are being actively developed in Argentina, USA, Brazil, Russia, China, South Korea, Japan, India and South Africa. Chile's 2010 earthquake and Fukushima's 2011 nuclear disaster have increased significantly both the population's fear and opposition to Nuclear Power Energy for the possible consequences of radiation on the lives of people. This paper aims to study the seismic resistance of a typical nuclear structure, being at time proposed in Small Modular Reactors, by using earthquake conditions typically seen in Chile. Since many designs are under study, a NuScale reactor from USA is analyzed under these extreme loading conditions. The major advantages of the NuScale reactor are in the power scalability (it can go from 1 to 12 reactor cores producing from 60 to 720 MWe), limited nuclear fuel concentration, modules allocated below grade and high strength steel containments fully immersed in water. The cooling effect beyond Design Basis Accident is ensured indefinitely, which induces a significant safety factor in the case of an accident. For the purpose of this study a detailed 3D detailed structural model was developed, reproducing the NuScale reactor's reinforced concrete framing system, where nonlinear analyses was performed to assess the overall mechanical response of the structure. The framing system has been tested under high seismic excitations typically seen in Chile (Mw > 8.0), showing high resistance and capability to cope with the developed forces due to its design. Based on a Soil-Structure Interaction analysis, it was also found that the NuScale framing system manages to maintain a low-stress level at the interaction surface between the foundation and the soil, where the structural system was found to be able to withstand significant earthquake loads. Finally, further investigation is deemed necessary in order to study the potential damages of the structure in the case of other hazards such as tsunami events, blast loads, etc.
Address [Markou, George] Univ Pretoria, Dept Civil Engn, Pretoria, South Africa, Email: george.markou@up.ac.za;
Corporate Author Thesis
Publisher Elsevier Science Sa Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0029-5493 ISBN Medium
Area Expedition Conference
Notes WOS:000454924700016 Approved
Call Number UAI @ eduardo.moreno @ Serial 968
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Author Moffat, R.; Jadue, C.; Beltran, J.F.; Herrera, R.
Title Experimental evaluation of geosynthetics as reinforcement for shotcrete Type
Year 2017 Publication Geotextiles And Geomembranes Abbreviated Journal Geotext. Geomembr.
Volume 45 Issue 3 Pages 161-168
Keywords Geosynthetics; Shotcrete; Geosynthetics reinforcement; Energy absorption; Shotcrete strength
Abstract One of the commonly used stabilization systems for rock tunnels is shotcrete. This fine aggregate mortar is usually reinforced for improving its tensile and shear strength. In deep tunnels, its capacity to absorb energy has been recently considered for design purposes, as large displacements of the wall are expected. Two of the most used materials of reinforcement are steel welded-wire mesh and fibers (steel or polypropylene) in the shotcrete mix. This study presents the results and discussion of an experimental test program conducted to obtain the load-deformation curves of reinforced shotcrete, according to ASTM C 1550, using geosynthetics grids and geotextiles as alternative reinforcement materials. In addition, plain shotcrete and steel welded-wire mesh reinforced shotcrete specimens are also considered in the experimental program as benchmark cases. The experimental results are analyzed in terms of maximum strength and toughness. Results show that the use of geosynthetics as a reinforcement material is a promising alternative to obtain shotcrete with energy absorption capacity comparable with the most common reinforcement materials used. (C) 2017 Elsevier Ltd. All rights reserved.
Address [Moffat, R.] Univ Adolfo Ibanez, Dept Civil Engn, Santiago, Chile, Email: ricardo.moffat@uai.cl;
Corporate Author Thesis
Publisher Elsevier Sci Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0266-1144 ISBN Medium
Area Expedition Conference
Notes WOS:000401879300004 Approved
Call Number UAI @ eduardo.moreno @ Serial 733
Permanent link to this record
 

 
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
Permanent link to this record
 

 
Author Munoz, F.D.; Hobbs, B.F.; Watson, J.P.
Title New bounding and decomposition approaches for MILP investment problems: Multi-area transmission and generation planning under policy constraints Type
Year 2016 Publication European Journal Of Operational Research Abbreviated Journal Eur. J. Oper. Res.
Volume 248 Issue 3 Pages 888-898
Keywords OR in energy; Stochastic programming; Benders decomposition
Abstract We propose a novel two-phase bounding and decomposition approach to compute optimal and near-optimal solutions to large-scale mixed-integer investment planning problems that have to consider a large number of operating subproblems, each of which is a convex optimization. Our motivating application is the planning of power transmission and generation in which policy constraints are designed to incentivize high amounts of intermittent generation in electric power systems. The bounding phase exploits Jensen's inequality to define a lower bound, which we extend to stochastic programs that use expected-value constraints to enforce policy objectives. The decomposition phase, in which the bounds are tightened, improves upon the standard Benders' algorithm by accelerating the convergence of the bounds. The lower bound is tightened by using a Jensen's inequality-based approach to introduce an auxiliary lower bound into the Benders master problem. Upper bounds for both phases are computed using a sub-sampling approach executed on a parallel computer system. Numerical results show that only the bounding phase is necessary if loose optimality gaps are acceptable. However, the decomposition phase is required to attain optimality gaps. Use of both phases performs better, in terms of convergence speed, than attempting to solve the problem using just the bounding phase or regular Benders decomposition separately. (C) 2015 Elsevier B.V. and Association of European Operational Research Societies (EURO) within the International Federation of Operational Research Societies (IFORS). All rights reserved.
Address [Munoz, F. D.] Univ Adolfo Ibanez, Fac Sci & Engn, Santiago, Chile, Email: fdmunoz@uai.cl;
Corporate Author Thesis
Publisher Elsevier Science Bv Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0377-2217 ISBN Medium
Area Expedition Conference
Notes WOS:000364603700013 Approved
Call Number UAI @ eduardo.moreno @ Serial 535
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Author Munoz, F.D.; Pumarino, B.J.; Salas, I.A.
Title Aiming low and achieving it: A long-term analysis of a renewable policy in Chile Type
Year 2017 Publication Energy Economics Abbreviated Journal Energy Econ.
Volume 65 Issue Pages 304-314
Keywords Planning model; Renewable portfolio standard; Renewable energy certificates
Abstract We use an Integrated Resource Planning model to assess the costs of meeting a 70% renewables target by 2050 in Chile. This model is equivalent to a long-term equilibrium in electricity and renewable energy certificate (REC) markets under perfect competition. We consider different scenarios of demand growth, resource eligibility (e.g., large hydropower), and transmission system configuration. Our numerical results indicate that the sole characteristics of the available renewable resources in the country and reductions in technology costs will provide sufficient economic incentives for private investors to supply a fraction of renewables larger than 70% for a broad range of scenarios, meaning that the proposed target will likely remain a symbolic government effort. Increasing transmission capacity between the northern and central interconnected systems could reduce total system cost by $400 million per year and increase the equilibrium share of non conventional renewable energy (NCRE) in the system from 45% to 52%, without the need for any additional policy incentive. Surprisingly, imposing a 70% of NCRE by 2050 results in a REC price lower than the noncompliance fine used for the current target of 20% of NCRE by 2025, the latter of which represents the country's maximum willingness to pay for the attributes of electricity supplied from NCRE resources. (C) 2017 Elsevier B.V. All rights reserved.
Address [Munoz, Francisco D.; Pumarino, Bruno J.; Salas, Ignacio A.] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Diagonal Torres 2640,Oficina 303D, Santiago, Chile, Email: fdmunoz@uai.cl
Corporate Author Thesis
Publisher Elsevier Science Bv Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0140-9883 ISBN Medium
Area Expedition Conference
Notes WOS:000406731900028 Approved
Call Number UAI @ eduardo.moreno @ Serial 753
Permanent link to this record