Browsing Articles publicats (Informàtica i Enginyeria Industrial) by Author "Ushak, Svetlana"
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Advances in the valorization of waste and by-product materials as thermal energy storage (TES) materials
Gutiérrez, Andrea; Miró, Laia; Gil, Antoni; Rodríguez Aseguinolaza, Javier; Barreneche Güerisoli, Camila; Calvet, Nicolas; Py, Xavier; Fernández Renna, Ana Inés; Grágeda, Mario; Ushak, Svetlana; Cabeza, Luisa F. (Elsevier, 2016)Today, one of the biggest challenges our society must face is the satisfactory supply, dispatchability and management of the energy. Thermal Energy Storage (TES) has been identified as a breakthrough concept in industrial ... -
Application of Solar Heating on the Electrolyte Conditioning for Electrowinning Process: Thermosolar Plant Performance
Oró Prim, Eduard; Pulido, D.; Grágeda, Mario; Ushak, Svetlana; Cabeza, Luisa F. (Elsevier, 2014)In this contribution the performance of a thermosolar plant to provide heat to the copper electrowinning (EW) process is analyzed. This plant has a collecting area of 404 m2 with flat plate solar collectors, and generation ... -
Characterisation of commercial phase change materials with potential application in gypsum boards for buildings
Marín, Paula E.; Ushak, Svetlana; Gracia Cuesta, Alvaro de; Cabeza, Luisa F. (Wiley, 2022)Currently, there is an expanded utilisation of lightweight construction structures in buildings, which results in a low structure's thermal storage capacity of the envelope due to the application of thermally unsuitable ... -
Characterization of wastes based on inorganic double salt hydrates as potential thermal energy storage materials
Gutiérrez, Andrea; Ushak, Svetlana; Mamani, Veronica; Vargas, Pedro; Barreneche Güerisoli, Camila; Cabeza, Luisa F.; Grágeda, Mario (Elsevier, 2017)Thermal energy storage (TES) is seen today as a key technology to reduce the existing gap between energy demand and energy supply in many energy systems. There are, currently, three well known methods to store thermal ... -
Compatibility of materials for macroencapsulation of inorganic phase change materials: experimental corrosion study
Ushak, Svetlana; Marín, Paula E.; Galazutdinova, Yana; Cabeza, Luisa F.; Farid, Mohammed M.; Grágeda, Mario (Elsevier, 2016)The potential of the use of salt hydrates MgCl2·6H2O (bischofite) with typical impurities of the Salar de Atacama as a thermal energy storage material was evaluated with special attention to its corrosion behavior. Bischofite ... -
Economic impact of integrating PCM as passive system in buildingsusing Fanger comfort model
Saffari Tabalvandani, Mohammad; Gracia Cuesta, Alvaro de; Ushak, Svetlana; Cabeza, Luisa F. (Elsevier, 2016)In buildings, HVAC systems consume a high amount of energy to provide thermal comfort for occupants. A methodology is presented in this paper to control thermostat operation of the buildings considering the effects of ... -
Energy savings due to the use of PCM for relocatable lightweight buildings passive heating and cooling in different weather conditions
Marin, Paula; Saffari Tabalvandani, Mohammad; Gracia Cuesta, Alvaro de; Zhu, Xibingyan; Farid, Mohammed M.; Cabeza, Luisa F.; Ushak, Svetlana (Elsevier, 2016)Relocatable, transportable or off-site constructed lightweight buildings typically undergo sharp indoor temperature fluctuations in the heating and cooling seasons due to the lack of sufficient thermal mass in their ... -
Enthalpy-temperature plots to compare calorimetric measurements of phase change materials at different sample scales
Rathgeber, Christoph; Schmit, Henri; Miró, Laia; Cabeza, Luisa F.; Gutiérrez, Andrea; Ushak, Svetlana; Hiebler, Stefan (Elsevier, 2018)Phase change materials (PCM) can provide high thermal energy storage capacities in narrow temperature ranges around their phase change temperature. The expectable maximum storage capacity of a PCM in a defined temperature ... -
Experimental comparison of passive heating/cooling space in lightweight buildings with potential application in mining camps
Villalobos, Islamán; Gracia Cuesta, Alvaro de; Chàfer, Marta; Cabeza, Luisa F.; Ushak, Svetlana (IOP Publishing, 2020)The total energy consumption in a house in Chile includes 30% of heating expenses, increasing to 60% in the winter period. The current energy source are fossil fuels, which can be replaced by the sun, with an efficient ... -
Industrial waste materials and by-products as thermal energy storage (TES) materials: A review
Gutierrez, Andrea; Miró, Laia; Gil, Antoni; Rodríguez Aseguinolaza, Javier; Barreneche Güerisoli, Camila; Calvet, Nicolas; Py, Xavier; Fernández Renna, Ana Inés; Grágeda, Mario; Ushak, Svetlana; Cabeza, Luisa F. (AIP Publishing, 2016)A wide variety of potential materials for thermal energy storage (TES) have been identify depending on the implemented TES method, Sensible, latent or thermochemical. In order to improve the efficiency of TES systems ... -
Influence of alkaline chlorides on thermal energy storage properties of bischofite
Ushak, Svetlana; Gutiérrez, Andrea; Galazutdinova, Yana; Barreneche Güerisoli, Camila; Cabeza, Luisa F.; Grágeda, Mario (John Wiley & Sons, 2016)Brines coming from salted lakes such as that at the Atacama desert in Chile produce by-products or wastes which today are stored in the nearby from the production areas. Bischofite is one of those by-products, and therefore, ... -
Lithium compounds for thermochemical energy storage: A state-of-the-art review and future trends
Marín, Paula E.; Milian, Yanio; Ushak, Svetlana; Cabeza, Luisa F.; Grágeda, Mario; Shire, G.S.F. (Elsevier, 2021)The world is currently going through significant changes in technology, and alongside these advances, new developments of strategies to store and supply energy are crucial for the widespread use of consumer electronics and ... -
Lithium in thermal energy storage: a state-of-the-art review
Cabeza, Luisa F.; Gutiérrez, Andrea; Barreneche Güerisoli, Camila; Ushak, Svetlana; Fernández, Ángel G.; Fernández Renna, Ana Inés; Grágeda, Mario (Elsevier, 2015)Lithium, mainly used in electrical energy storage, has also been studied in thermal energy storage. It is recognized as a"critical material" and is produced from minerals and from brines. Chile is one of the biggest ... -
Modelo de equilibrio químico para representar solubilidades de sistemas ternarios y su aplicación a la predicción de eutécticos de sistemas cuaternarios
Lovera, Jorge A.; Ushak, Svetlana; Flores, Elsa K.; Fernández, Ángel G.; Galleguillos, Hector (Universidad de Tarapacá, 2020)Incorporar la energía solar en el sector habitacional requiere de materiales adecuados para el almacenamiento de energía. Algunas mezclas eutécticas de sales inorgánicas hidratadas son una buena alternativa. Habitualmente ... -
Novel inorganic binary mixture for low‐temperature heat storage applications
Galazutdinova, Yana; Grágeda, Mario; Cabeza, Luisa F.; Ushak, Svetlana (Wiley, 2017)In this study, an inorganic mixture based on bischofite (industrial by‐product) was developed and characterized for its application as a phase change material for low‐temperature thermal energy storage. The most appropriate ... -
Passive cooling of buildings with phase change materials using whole-building energy simulation tools: A review
Saffari Tabalvandani, Mohammad; Gracia Cuesta, Alvaro de; Ushak, Svetlana; Cabeza, Luisa F. (Elsevier, 2017)Buildings contribute to climate change by consuming a considerable amount of energy to provide thermal comfort for occupants. Cooling energy demands are expected to increase substantially in the world. On this basis, ... -
Preparation and characterization of an inorganic magnesium chloride/nitrate/graphite composite for low temperature energy storage
Galazutdinova, Yana; Vega, Mariela; Grágeda, Mario; Cabeza, Luisa F.; Ushak, Svetlana (Elsevier, 2018)In this study, an inorganic mixture of 40 wt% MgCl2·6H2O and 60 wt% Mg(NO3)2·6H2O was impregnated into two types of the expanded graphite (EG): EG flakes and EG matrix. Different methods of preparation usually used in the ... -
Preparation and Characterization of Inorganic PCM Microcapsules by Fluidized Bed Method
Ushak, Svetlana; Cruz, M. Judith; Cabeza, Luisa F.; Grágeda, Mario (MDPI, 2016)The literature shows that inorganic phase change materials (PCM) have been very seldom microencapsulated, so this study aims to contribute to filling this research gap. Bischofite, a by-product from the non-metallic industry ... -
Reduction of the subcooling of bischofite with the use of nucleatings agents
Ushak, Svetlana; Gutiérrez, Andrea; Barreneche Güerisoli, Camila; Fernández Renna, Ana Inés; Grágeda, Mario; Cabeza, Luisa F. (Elsevier, 2016)The use of by-products or wastes as phase change materials (PCM) in thermal energy storage (TES) systems is a good option to decrease the cost of such systems. One of the main disadvantages of PCM if inorganic materials ... -
Thermal performance evaluation of bischofite at pilot plant scale
Gasia, Jaume; Gutiérrez, Andrea; Peiró Bell-lloch, Gerard; Miró, Laia; Grágeda, Mario; Ushak, Svetlana; Cabeza, Luisa F. (Elsevier, 2015)The selection of the proper thermal energy storage (TES) material for an application is crucial. On the one hand, these materials should have suitable thermal properties for the operational temperatures range of the ...