Now showing items 489-508 of 736

    • Numerical analysis of a latent heat thermal energy storage system under partial load operating conditions 

      Arena, Simone; Casti, Efisio; Gasia, Jaume; Cabeza, Luisa F.; Cau, Giorgio (Elsevier, 2018)
      One of the features that should be considered when designing a thermal energy storage (TES) system is its behaviour when subjected to non-continuous (partial loads) operating conditions. Indeed, the system performance can ...
    • Numerical analysis of building envelope with movable phase change materials for heating applications 

      Gracia Cuesta, Alvaro de (MDPI, 2019)
      Latent heat storage materials have been tested by several researchers for decades to be used as passive heating and cooling systems in buildings but their implementation into building components is still stacked as is ...
    • Numerical model evaluation of a PCM cold storage tank and uncertainty analysis of the parameters 

      Zsembinszki, Gabriel; Moreno Argilés, Pere; Solé Cutrona, Cristian; Castell, Albert; Cabeza, Luisa F. (Elsevier, 2014)
      Thermal energy storage (TES) tanks for cold storage can be used for peak load shaving. This paper presents and evaluates a mathematical model where a TES tank is filled with commercial phase change material (PCM) flat ...
    • Numerical modelling o f ventilated facades: A review 

      Gracia Cuesta, Alvaro de; Castell, Albert; Navarro Farré, Lidia; Oró Prim, Eduard; Cabeza, Luisa F. (Elsevier, 2013)
      The use of double skin facades (DSF) in the building sector and its thermal benefits have been widely studied numerically over the last 30 years. These modelling and simulations are based on different typologies, which ...
    • Numerical parametric study of a hotspot-targeted microfluidic cooling array for microelectronics 

      Laguna Benet, Gerard; Vilarrubí, Montse; Ibáñez, Manuel; Betancourt, Yina; Illa i Alibés, Josep; Azarkish, Hassan; Amnache, Amrid; Collin, Louis-Michel; Coudrain, Perceval; Fréchette, L. G.; Barrau, Jérôme (Elsevier, 2018-11-05)
      Thermal management in integrated chips is one of the major challenges on micro- and nanoelectronics. The rise of power density raised the need for microchannel liquid cooling solutions. This technology has poor temperature ...
    • Numerical simulation of a finned-tube LHTES system: influence of the mushy zone constant on the phase change behaviour 

      Arena, Simone; Casti, Efisio; Gasia, Jaume; Cabeza, Luisa F.; Cau, Giorgio (Elsevier, 2017)
      This work presents a numerical investigation on latent heat thermal energy storage (LHTES) systems during the phase change process. The numerical analysis, based on the apparent heat capacity formulation, was carried out ...
    • Numerical simulation of a PCM packed bed system: A review 

      Gracia Cuesta, Alvaro de; Cabeza, Luisa F. (Elsevier, 2016)
      The detailed study of latent packed bed thermal energy storage (TES) system has been a great topic of interest in the literature. Experimental measurements have been conducted to analyze the performance of these systems, ...
    • Numerical study of dynamic melting enhancement in a latent heat thermal energy storage system 

      Gasia, Jaume; Groulx, Dominic; Tay, N. H. Steven; Cabeza, Luisa F. (Elsevier, 2020)
      In the present work, a 2D Cartesian numerical model is implemented to simulate the transient behaviour of a latent heat thermal energy storage system under the effect of the dynamic melting enhancement technique. This ...
    • Numerical study on the thermal performance of a ventilated facade with PCM 

      Gracia Cuesta, Alvaro de; Navarro Farré, Lidia; Castell, Albert; Cabeza, Luisa F. (Elsevier, 2013)
      A new type of ventilated facade (VF) with macro-encapsulated phase change material (PCM) in its air cavity is presented in this paper. Two identical house-like cubicles located in Puigverd de Lleida (Spain) were monitored ...
    • Obtaining the three-dimensional structure of tree orchards from remote 2D terrestrial LIDAR scanning 

      Rosell Polo, Joan Ramon; Llorens Calveras, Jordi; Sanz Cortiella, Ricardo; Arnó Satorra, Jaume; Ribes Dasi, Manuel; Masip Vilalta, Joan; Escolà i Agustí, Alexandre; Camp, Ferran; Solanelles Batlle, Francesc; Gràcia, Felip; Gil Moya, Emilio; Val, Luis; Planas de Martí, Santiago; Palacín Roca, Jordi (Elsevier, 2009)
      In recent years, LIDAR (light detection and ranging) sensors have been widely used to measure environmental parameters such as the structural characteristics of trees, crops and forests. Knowledge of the structural ...
    • Obtención de Modelos 3D a partir de Proyecciones Axonométricas 

      Béjar Torres, Ramón; Cabiscol i Teixidó, Alba; Fernàndez Camon, César; López, M.; Manyà Serres, Felip (2002)
      En este artículo presentamos un método computacional para la resolución del problema de la interpretación de una escena 3D a partir de una proyección axonométrica de la misma. Si bien este problema había sido tratado ...
    • On an innovative approach for microclimate enhancement and retrofit of historic buildings and artworks preservation by means of innovative thin envelope materials 

      Pigliautile, Ilaria; Castaldo, Veronica Lucia; Makaremi, Nastaran; Pisello, Anna Laura; Cabeza, Luisa F.; Cotana, Franco (Elsevier, 2019)
      Energy efficiency and environmental sustainability in building has become a key issue since the built environment is nowadays responsible for more than 30% of the total carbon emissions. While new building design and ...
    • On balanced CSPs with high treewidth 

      Ansótegui Gil, Carlos José; Béjar Torres, Ramón; Fernàndez Camon, César; Mateu Piñol, Carles (Association for the Advancement of Artificial Intelligence, 2007)
      Tractable cases of the binary CSP are mainly divided in two classes: constraint language restrictions and constraint graph restrictions. To better understand and identify the hardest binary CSPs, in this work we propose ...
    • On n-contractive fuzzy logics 

      Horcık, Rostislav; Noguera, Carles; Petrık, Milan (Wiley, 2007)
      It is well known that MTL satisfies the finite embeddability property. Thus MTL is complete w. r. t. the class of all finite MTL-chains. In order to reach a deeper understanding of the structure of this class, we consider the ...
    • On the conceptualization, design and evaluation of appealing, meaningful, and playable digital games for older people 

      Sayago Barrantes, Sergio; Rosales, Andrea; Righi, Valeria; Ferreira, Susan M.; Coleman, Graeme W.; Blat, Josep (SAGE Publications, 2015-07-30)
      While older people tend to be regarded as actual, or potential, players of digital games within literature on game studies, human<br>computer interaction, and ger- ontechnology, they are also often considered nonavid users ...
    • On the evocative power and play value of a wearable movement-to-sound interaction accessory in the rich free-play of schoolchildren 

      Rosales, Andrea; Sayago Barrantes, Sergio; Carrascal Ruiz, Juan Pablo; Blat, Josep (IOS Press, 2014)
      This paper discusses the evocative power and play value of the Wearable Sounds Kit (WSK), a movement-to-sound interaction accessory. Whilst movement-to-sound interaction is attracting growing research attention in HCI, ...
    • On the hardness of solving edge matching puzzles as SAT or CSP problems 

      Ansótegui Gil, Carlos José; Béjar Torres, Ramón; Fernàndez Camon, César; Mateu Piñol, Carles (Springer Verlag, 2013)
      Edge matching puzzles have been amongst us for a long time now and traditionally they have been considered, both, a children’s game and an interesting mathematical divertimento. Their main characteristics have already been ...
    • On the Performance of MaxSAT and MinSAT Solvers on 2SAT-MaxOnes 

      Argelich Romà, Josep; Béjar Torres, Ramón; Fernàndez Camon, César; Mateu Piñol, Carles; Planes Cid, Jordi (Springer International Publishing Switzerland, 2016-06-01)
      We analyze and compare two solvers for Boolean optimization problems: WMaxSatz, a solver for Partial MaxSAT, and MinSatz, a solver for Partial MinSAT. Both MaxSAT and MinSAT are similar, but previous results indicate that ...
    • On the use of filters to facilitate the post-optimal analysis of the Pareto solutions in multi-objective optimization 

      Antipova, Ekaterina; Pozo, C.; Guillén Gosálbez, Gonzalo; Boer, Dieter; Cabeza, Luisa F.; Jiménez Esteller, Laureano (Elsevier, 2015)
      Multi-objective optimization (MOO) has emerged recently as a useful technique in the design andplanning of engineering systems because it allows identifying alternatives leading to significant envi-ronmental savings. MOO ...
    • On triangular norm based axiomatic extensions of the weak nilpotent minimum logic 

      Noguera, Carles; Esteva, Francesc; Gispert, Joan (Wiley, 2008)
      In this paper we carry out an algebraic investigation of the weak nilpotent minimum logic (WNM) and its t-norm based axiomatic extensions. We consider the algebraic counterpart of WNM, the variety of WNM-algebras ([MATHEMATICAL ...