|   | 
Details
   web
Records
Author (up) Araya-Letelier, G.; Concha-Riedel, J.; Antico, F.C.; Valdes, C.; Caceres, G.
Title Influence of natural fiber dosage and length on adobe mixes damage-mechanical behavior Type
Year 2018 Publication Construction And Building Materials Abbreviated Journal Constr. Build. Mater.
Volume 174 Issue Pages 645-655
Keywords Adobe mixes; Animal fiber; Mechanical properties; Damage control; Fiber-reinforced
Abstract This study addresses the use of a natural fiber (pig hair), a massive food-industry waste, as reinforcement in adobe mixes (a specific type of earthen material). The relevance of this work resides in the fact that earthen materials are still widely used worldwide because of their low cost, availability, and low environmental impact. Results show that adobe mixes' mechanical-damage behavior is sensitive to both (i) fiber dosage and (ii) fiber length. Impact strength and flexural toughness are increased, whereas shrinkage distributed crack width is reduced. Average values of compressive and flexural strengths are reduced as fiber dosage and length increase, as a result of porosity generated by fiber clustering. Based on the results of this work a dosage of 0.5% by weight of dry soil using 7 mm fibers is optimal to improve crack control, flexural toughness and impact strength without statistically affecting flexural and compressive strengths. (C) 2018 Elsevier Ltd. All rights reserved.
Address [Araya-Letelier, G.] Pontificia Univ Catolica Chile, Fac Ingn, Escuela Construcc Civil, Ave Vicuna Mackenna 4860, Santiago 7820436, Chile, Email: gerardo.araya@uc.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 0950-0618 ISBN Medium
Area Expedition Conference
Notes WOS:000433656300061 Approved
Call Number UAI @ eduardo.moreno @ Serial 873
Permanent link to this record
 

 
Author (up) Brems, A.; Caceres, G.; Dewil, R.; Baeyens, J.; Pitie, E.
Title Heat transfer to the riser-wall of a circulating fluidised bed (CFB) Type
Year 2013 Publication Energy Abbreviated Journal Energy
Volume 50 Issue Pages 493-500
Keywords Heat transfer; Wall-to-suspension; Riser; Correlations; Prediction; Coefficient of heat transfer
Abstract The circulating fluidized bed is of increasing importance for gas-solid and gas-catalytic reactions, for drying, and recently its use in solar energy capture and storage has been advocated. In all applications, the supply or withdrawal of heat is a major issue, and the heat transfer coefficient from the gas-solid suspension to the heat transfer surface needs to be determined as design parameter. The present paper investigates the heat transfer coefficient for different operating gas velocity and solids circulation flux, whilst covering the different hydrodynamic solid flow regimes of dilute, core-annulus or dense mode. Measured values of the wall-to-bed heat transfer coefficients are compared with empirical predictions of both Molodstof and Muzyka, and Golriz and Grace. The application of a packet renewal mechanism at the wall is also investigated, and introducing the predicted solid contact time at the wall provides a very fair estimate of the heat transfer coefficient. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
Address [Brems, A.; Dewil, R.] Katholieke Univ Leuven, Dept Chem Engn, Chem & Biochem Proc Technol & Control Sect, B-3001 Heverlee, Belgium, Email: fpitie@whittakereng.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 0360-5442 ISBN Medium
Area Expedition Conference
Notes WOS:000316432700050 Approved
Call Number UAI @ eduardo.moreno @ Serial 310
Permanent link to this record
 

 
Author (up) Caceres, G.; Anrique, N.; Girard, A.; Degreve, J.; Baeyens, J.; Zhang, H.L.
Title Performance of molten salt solar power towers in Chile Type
Year 2013 Publication Journal Of Renewable And Sustainable Energy Abbreviated Journal J. Renew. Sustain. Energy
Volume 5 Issue 5 Pages 15 pp
Keywords
Abstract Chile is facing important challenges to develop its energy sector. Estimations demonstrate that in its electricity consumption Chile will grow at an annual rate of 4.6% until 2030, despite ongoing efficiency improvements. To satisfy this demand in a sustainable way, the national energy policy promotes the integration of novel and clean power generation into the national power mix, with special emphasis on concentrated solar power (CSP). The present paper assesses the development of solar-based electricity generation in Chile by CSP, achieved by a Solar Power Tower plant (SPT) using molten salt as heat carrier and store. Such SPTs can be installed at different locations in Chile, and connected to the main national grid. Results show that each SPT plant can generate around 76 GWh(el) of net electricity, when considering solar irradiation as the sole energy source and at a 16% overall efficiency of the SPT process. For operation in a continuous mode, a hybrid configuration with integrated gas backup system increases the generating potential of each SPT to 135 GWh(el). A preliminary Levelized Energy Cost (LEC) calculation provides LEC values between 0.15 and 0.18 $/kWh, as function of the overall process efficiency and estimated investment cost. Chile's solar irradiation favors the implementation of SPT plants. (C) 2013 AIP Publishing LLC.
Address [Caceres, G.; Anrique, N.; Girard, A.] Univ Adolfo Ibanez, Fac Sci & Engn, Santiago, Chile, Email: Zhanghl.lily@gmail.com
Corporate Author Thesis
Publisher Amer Inst Physics Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1941-7012 ISBN Medium
Area Expedition Conference
Notes WOS:000326641300056 Approved
Call Number UAI @ eduardo.moreno @ Serial 325
Permanent link to this record
 

 
Author (up) 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
Permanent link to this record
 

 
Author (up) Caceres, G.; Montane, M.; Nasirov, S.; O'Ryan, R.
Title Review of Thermal Materials for CSP Plants and LCOE Evaluation for Performance Improvement using Chilean Strategic Minerals: Lithium Salts and Copper Foams Type
Year 2016 Publication Sustainability Abbreviated Journal Sustainability
Volume 8 Issue 2 Pages 20 pp
Keywords
Abstract
Address [Caceres, Gustavo; Montane, Macarena; Nasirov, Shahriyar; O'Ryan, Raul] 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 2071-1050 ISBN Medium
Area Expedition Conference
Notes WOS:000371830100075 Approved
Call Number UAI @ eduardo.moreno @ Serial 604
Permanent link to this record
 

 
Author (up) Caceres, G.; Nasirov, S.; Zhang, H.L.; Araya-Letelier, G.
Title Residential Solar PV Planning in Santiago, Chile: Incorporating the PM10 Parameter Type
Year 2015 Publication Sustainability Abbreviated Journal Sustainability
Volume 7 Issue 1 Pages 422-440
Keywords PV solar panels; efficiency; LCOE; dust; PM10; Santiago; Chile
Abstract This paper addresses an economic study of the installation of photovoltaic (PV) solar panels for residential power generation in Santiago, Chile, based on the different parameters of a PV system, such as efficiency. As a performance indicator, the Levelized Cost of Energy (LCOE) was used, which indicates the benefit of the facility vs. the current cost of electrical energy. In addition, due to a high level of airborne dusts typically associated with PM10, the effect of the dust deposition on PV panels' surfaces and the effect on panel performance are examined. Two different scenarios are analyzed: on-grid PV plants and off-grid PV plants.
Address [Caceres, Gustavo; Nasirov, Shahriyar; Araya-Letelier, Gerardo] Univ Adolfo Ibanez, Fac Ingn & Ciencias, 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 2071-1050 ISBN Medium
Area Expedition Conference
Notes WOS:000348399300020 Approved
Call Number UAI @ eduardo.moreno @ Serial 451
Permanent link to this record
 

 
Author (up) 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
Permanent link to this record
 

 
Author (up) 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
Permanent link to this record
 

 
Author (up) 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
Permanent link to this record
 

 
Author (up) 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
Permanent link to this record
 

 
Author (up) 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
Permanent link to this record
 

 
Author (up) 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 (up) Nasirov, S.; Agostini, C.; Silva, C.; Caceres, G.
Title Renewable energy transition: a market-driven solution for the energy and environmental concerns in Chile Type
Year 2018 Publication Clean Technologies And Environmental Policy Abbreviated Journal Clean Technol. Environ. Policy
Volume 20 Issue 1 Pages 3-12
Keywords Energy transition; Energy policy; Renewable energy technologies; Chile
Abstract Chile is undergoing a remarkable energy matrix transition to renewable energy. Renewable energies are expanding extraordinarily fast, exceeding earlier predictions. As a result, the country is expected to meet its 2025 goal of generating 20% of its electricity from renewable energy sources quite before. Chile has become one of the first countries in the world with subsidy-free markets, where renewable projects compete directly with other conventional sources. Favorable market conditions and successful policy reforms were keys to fostering this renewable energy development. Although the country has achieved a substantial growth in renewable energy investment in a relatively short period of time, this optimism should be treated with caution. A successful transition requires a combination of a clear decision making, persistent and consistent government policies, and a clear commitment to tackling challenges to accommodate renewable energy in the power system. In this context, this paper analyses the Chilean renewable industry and the required government policies to succeed in this transition. For this purpose, we identify several critical factors that have attracted and that could attract investment to the renewable energy sector and propose key recommendations to effectively address the major challenges faced for the future development of the industry.
Address [Nasirov, Shahriyar; Silva, Carlos; Caceres, Gustavo] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Ave Diagonal Las Torres 2640, Santiago 7941169, Chile, Email: shahriyar.nasirov@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 1618-954x ISBN Medium
Area Expedition Conference
Notes WOS:000419770700002 Approved
Call Number UAI @ eduardo.moreno @ Serial 823
Permanent link to this record
 

 
Author (up) Parrado, C.; Caceres, G.; Bize, F.; Bubnovich, V.; Baeyens, J.; Degreve, J.; Zhang, H.L.
Title Thermo-mechanical analysis of copper-encapsulated NaNO3-KNO3 Type
Year 2015 Publication Chemical Engineering Research & Design Abbreviated Journal Chem. Eng. Res. Des.
Volume 93 Issue Pages 224-231
Keywords Copper-encapsulation; Nitrate salts; Simulation; Phase change material; Thermal energy storage; Comsol Multiphysics
Abstract The present paper presents a numerical study to investigate and assess the heat transfer behavior of a copper and salt composite. A mixture of nitrates, KNO3-NaNO3, within a deformable spherical shell coating of copper will be used as an encapsulated phase change material, E-PCM. In the context of a thermo-mechanical analysis of this E-PCM, a simulation is proposed to determine its storage capacity and properties The melting, or solidification of the encapsulated PCM particles do not provoke cracking of the deformable shell. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Address [Parrado, C.; Caceres, G.; Bize, F.; Bubnovich, V.] Univ Adolfo Ibanez, Fac Sci & Engn, Santiago, Chile, Email: J.Baeyens@warwick.ac.uk
Corporate Author Thesis
Publisher Inst Chemical Engineers Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0263-8762 ISBN Medium
Area Expedition Conference
Notes WOS:000348878600021 Approved
Call Number UAI @ eduardo.moreno @ Serial 457
Permanent link to this record
 

 
Author (up) Zhang, H.L.; Baeyens, J.; Caceres, G.; Degreve, J.; Lv, Y.Q.
Title Thermal energy storage: Recent developments and practical aspects Type
Year 2016 Publication Progress In Energy And Combustion Science Abbreviated Journal Prog. Energy Combust. Sci.
Volume 53 Issue Pages 1-40
Keywords Thermal energy storage; Sensible; Latent; Thermo-chemical; Encapsulation; Material properties; Improvements; Future R&D
Abstract Thermal energy storage (TES) transfers heat to storage media during the charging period, and releases it at a later stage during the discharging step. It can be usefully applied in solar plants, or in industrial processes, such as metallurgical transformations. Sensible, latent and thermo-chemical media store heat in materials which change temperature, phase or chemical composition, respectively. Sensible heat storage is well-documented. Latent heat storage, using phase change materials (PCMs), mainly using liquid solid transition to store latent heat, allows a more compact, efficient and therefore economical system to operate. Thermo-chemical heat storage (TCS) is still at an early stage of laboratory and pilot research despite its attractive application for long term energy storage. The present review will assess previous research, while also adding novel treatments of the subject. TES systems are of growing importance within the energy awareness: TES can reduce the LCOE (levelized cost of electricity) of renewable energy processes, with the temperature of the storage medium being the most important parameter. Sensible heat storage is well-documented in literature and applied at large scale, hence limited in the content of the present review paper. Latent heat storage using PCMs is dealt with, specifically towards high temperature applications, where inorganic substances offer a high potential. Finally, the use of energy storage through reversible chemical reactions (thermo-chemical Storage, TCS) is assessed. Since PCM and TCS storage media need to be contained in a capsule (sphere, tube, sandwich plates) of appropriate materials, potential containment materials are examined. A heat transfer fluid (HTF) is required to convey the heat from capture, to storage and ultimate re-use. Particle suspensions offer a valid alternative to common HTF, and a preliminary assessment confirms the advantages of the upflow bubbling fluidized bed and demonstrates that particulate suspensions enable major savings in investment and operating costs. Novel treatments of the TES subject in the review involve the required encapsulation of the latent and chemical storage media, the novel development of powder circulation loops as heat transfer media, the conductivity enhancement of PCMs, the use of lithium salts, among others. (C) 2015 Elsevier Ltd. All rights reserved.
Address [Zhang, Huili; Degreve, Jan] Katholieke Univ Leuven, Dept Chem Engn, Bio & Chem Reactor Engn & Safety Sect, B-3001 Leuven, Belgium, Email: lvyq@mail.buct.edu.cn
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 0360-1285 ISBN Medium
Area Expedition Conference
Notes WOS:000369210200001 Approved
Call Number UAI @ eduardo.moreno @ Serial 583
Permanent link to this record
 

 
Author (up) Zhang, H.L.; Baeyens, J.; Degreve, J.; Caceres, G.
Title Concentrated solar power plants: Review and design methodology Type
Year 2013 Publication Renewable & Sustainable Energy Reviews Abbreviated Journal Renew. Sust. Energ. Rev.
Volume 22 Issue Pages 466-481
Keywords Concentrated solar power plants; Design methodology; Solar towers; Hourly beam irradiation; Plant simulation
Abstract Concentrated solar power plants (CSPs) are gaining increasing interest, mostly as parabolic trough collectors (PTC) or solar tower collectors (STC). Notwithstanding CSP benefits, the daily and monthly variation of the solar irradiation flux is a main drawback. Despite the approximate match between hours of the day where solar radiation and energy demand peak, CSPs experience short term variations on cloudy days and cannot provide energy during night hours unless incorporating thermal energy storage (TES) and/or backup systems (BS) to operate continuously. To determine the optimum design and operation of the CSP throughout the year, whilst defining the required TES and/or BS, an accurate estimation of the daily solar irradiation is needed. Local solar irradiation data are mostly only available as monthly averages, and a predictive conversion into hourly data and direct irradiation is needed to provide a more accurate input into the CSP design. The paper (i) briefly reviews CSP technologies and STC advantages; (ii) presents a methodology to predict hourly beam (direct) irradiation from available monthly averages, based upon combined previous literature findings and available meteorological data; (iii) illustrates predictions for different selected STC locations; and finally (iv) describes the use of the predictions in simulating the required plant configuration of an optimum STC. The methodology and results demonstrate the potential of CSPs in general, whilst also defining the design background of STC plants. (C) 2013 Elsevier Ltd. All rights reserved.
Address Katholieke Univ Leuven, Dept Chem Engn, Chem & Biochem Proc Technol & Control Sect, B-3001 Heverlee, Belgium, Email: Zhanghl.lily@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 1364-0321 ISBN Medium
Area Expedition Conference
Notes WOS:000319952100040 Approved
Call Number UAI @ eduardo.moreno @ Serial 287
Permanent link to this record
 

 
Author (up) Zhang, H.L.; Baeyens, J.; Degreve, J.; Caceres, G.; Segal, R.; Pitie, F.
Title Latent heat storage with tubular-encapsulated phase change materials (PCMs) Type
Year 2014 Publication Energy Abbreviated Journal Energy
Volume 76 Issue Pages 66-72
Keywords Heat storage; Latent heat; Phase change materials; Nitrate-PCM; Tube-encapsulation; Experiments
Abstract Heat capture and storage is important in both solar energy projects and in the recovery of waste heat from industrial processes. Whereas heat capture will mostly rely on the use of a heat carrier, the high efficiency heat storage needs to combine sensible and latent heat storage with phase change materials (PCMs) to provide a high energy density storage. The present paper briefly reviews energy developments and storage techniques, with special emphasis on thermal energy storage and the use of PCM. It thereafter illustrates first results obtained when encapsulating NaNO3/KNO3-PCM in an AISI 321 tube, as example of a storage application using a multi-tubular exchanger filled with PCM. To increase the effective thermal conductivity of the PCM, 2 inserts i.e. metallic foam and metallic sponge are also tested. Experimental discharging (cooling) rates are interpreted by both solving the unsteady-state conduction equation, and by using Comsol Multiphysics. Predictions and experimental temperature evolutions are in fair agreement, and the effect of the inserts is clearly reflected by the increased effective thermal conductivity of the insert-PCM composite. Application of Comsol to predict the mechanical behavior of the system, when melting and associated expansion increase the internal pressure, demonstrates that the pressure build-up is far below the Young's modulus of the AISI 321 encapsulation and that this shell will not crack (C) 2014 Elsevier Ltd. All rights reserved.
Address [Zhang, H. L.; Degreve, J.] Katholieke Univ Leuven, Dept Chem Engn, Chem & Biochem Proc Technol & Control Sect, B-3001 Heverlee, Belgium, Email: Huili.Zhang@cit.kuleuven.be
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:000344444600009 Approved
Call Number UAI @ eduardo.moreno @ Serial 422
Permanent link to this record