Nuestros investigadores

Tomás Gómez-Acebo Temes

Departamento de Ingeniería Mecánica y Materiales
Escuela de Ingeniería (TECNUN). Universidad de Navarra
Rectorado. Universidad de Navarra
Líneas de investigación
Termodinámica computacional, Pulvimetalurgia, Diagramas de fases, Difusión, Eficiencia energética
Índice H
13, (WoS, 08/12/2020)
15, (Google Scholar, 08/12/2020)
15, (Scopus, 08/12/2020)

Publicaciones científicas más recientes (desde 2010)

Autores: Juaristi Gutiérrez, Miren (Autor de correspondencia); Loonen, R. ; Isaia, F. ; et al.
ISSN 2210-6707  Vol. 60  2020  págs. 102232
Mainstream design approaches for low-energy buildings make use of highly-insulated building envelopes. However, if facades are always blocking energy exchange, the climatic resources surrounding the built environment might remain untapped or issues like overheating could arise. By reducing energy demand or improving indoor comfort, adaptive opaque facades are considered a promising sustainable alternative. The usual approach for designing adaptive facades relies on detailed simulations of specific facade components. Such technology-oriented approaches tend to be incompatible with the early-stage design process and do rarely make a conscious analysis of the potential climatic resources, which could result in sub-optimal facade adaptation strategies. This paper presents a new methodological approach called Dynamic Climate Analysis (DCA) and shows that it is possible to narrow down the preferable adaptive opaque facade responses at early design stages by extracting relevant transient information from weather files. Users only define the location, geometry and placement of the facade. It was concluded that DCA represents a broadly useful early-stage design decision support because of its ability to estimate the proportion of preferred adaptive thermal behaviours without proposing defined technological solutions. Therefore, DCA is an effective approach to test the potential application of upcoming responsive technologies in specific built contexts.
Autores: Zuazua Ros, Amaia (Autor de correspondencia); Ramos González, Juan Carlos; Martín Gómez, César; et al.
Revista: ENERGY
ISSN 0360-5442  Vol. 205  2020 
Conventional cooling systems in large office buildings typically incorporate evaporative cooling towers, despite the drawbacks of direct evaporation. An alternative approach is based on highly selective innovative surfaces capable of daytime radiant cooling, however, prototypes of these cooling radiators have not yet demonstrated a system capable of cooling an actual building. This paper presents a third approach: A hybrid cooling system designed to partly or completely replace a cooling tower using dry heat dissipation panels. Unlike nocturnal cooling radiators, these panels may be integrated into a facade in a vertical position. The hybrid system is described firstly, where two configurations of the system are considered. Then, an evaluation of the hybrid system in comparison to a conventional system is performed by means of a simulation-based study, resulting that the replacement of a cooling tower by cooling panels increases the annual energy consumption by 3.6% compared to a conventional open circuit cooling tower system. However, the decrease in maintenance costs may reduce the annual operational expenses by over 50%. (C) 2020 Published by Elsevier Ltd.
Autores: Juaristi Gutiérrez, Miren (Autor de correspondencia); Konstantinou, Thaleia; Gómez-Acebo Temes, Tomás; et al.
ISSN 2071-1050  Vol. 12  Nº 23  2020  págs. 10118
Adaptive Opaque Facades (AOF) is an innovative concept with potential to achieve low carbon energy buildings. However, so far AOF are not integrated in the construction industry. One remarkable issue that designers have when dealing with alternative low-carbon technologies, such as AOF, is the absence of previous built experiences and the lack of specialised technical knowledge. Design roadmaps can be convenient solutions to guide pioneer low carbon technology applications. This work presents a roadmap to assist the performance-based early-stage design process of Adaptive Opaque Facades. Previous research developed new approaches and tools to assist on the construction definition of AOF, so that their adaptive thermal performance was considered when specific design decisions needed to be made. The roadmap presented in this paper organises the implementation sequence of each methodological approach and tools in dierent design stages, which aims to provide a holistic design approach for AOF. The usability of the roadmap was validated in a workshop called ¿Performance-based Design and Assessment of Adaptive Facades¿ with master students representing the target group of this roadmap. Even though these students had never heard about AOF before, they could successfully design, define the early-stage characteristics of an AOF and quantify the thermal performance of their AOF designs. The roadmap was proven to be a useful support, which might make the implementation of AOF more appr
Autores: Juaristi Gutiérrez, Miren (Autor de correspondencia); Gómez-Acebo Temes, Tomás; Monge Barrio, Aurora
ISSN 0360-1323  Vol. 144  2018  págs. 482 - 501
Over the last decades, new concepts of building envelopes have been proposed to achieve environmental targets. Adaptability of transparent components and facade integration of renewable energy harvesters are being widely studied. However, opaque facade components are less developed, even if their performance can be further optimized. When searching responsive technologies to propose new opaque facades, we learned they were usually created for other fields, which hampers their direct application in new envelopes. The successful implementation of these technologies in fa ade industry depends on the fulfilment of diverse requirements, such as durability, security or flexibility in design among others, but this information was not easy to get when they were not developed for the built environment. There is a lack of empirical studies evaluating these characteristics for adaptive technologies, which are mandatory to define the technical specifications of a fa ade. However, literature review provides a great amount of qualitative information and this study uses it for its analysis in order to gain insights into the degree of accomplishments of aforementioned requirements. Analysed technologies were kinetic elements, shifting thermal behaviour elements, dynamic components and systems. Overall, they still need to face several technical challenges for their suitable fa ade application. The novel visual analysis proposed in this paper is an useful tool for researchers undertaking this task, as it allows a fast and holistic comparison of the potentials and weaknesses of the dynamic technologies. It was concluded that a suitable combination among them could help to achieve the broad functionalities of the facades.
Autores: Zuazua Ros, Amaia; Ramos González, Juan Carlos; Martín Gómez, César; et al.
ISSN 1755-1307  Nº 154  2018  págs. 1 - 8
Autores: Juaristi Gutiérrez, Miren; Monge Barrio, Aurora; Sánchez-Ostiz Gutiérrez, Ana; et al.
ISSN 2213-302X  Vol. 6  Nº 2  2018  págs. 109 - 119
Autores: Juaristi Gutiérrez, Miren; Monge Barrio, Aurora; Knaack, Ulrich; et al.
ISSN 2213-3038  Vol. 6  Nº 3  2018  págs. 19 - 33
Today¿s society needs to face challenging targets relating to environment and energy efficiency, and therefore the development of efficient façade systems is essential. Innovative concepts such as Adaptive Building Façades might play a role in the near future, as their dynamic behaviour could optimise the performance of a building. For their successful development, a balance between sophistication and benefit is necessary and the implementation of Smart and Multifunctional Materials in building envelopes could be the key, as they have the ability to repeatedly and reversibly change some of their functions, features, or behaviours over time in response to environmental conditions. However, these materials were predominantly developed for use in other fields, and there is a lack of specific technical information to evaluate their usefulness in façade engineering. The aim of this paper is to collect the critical information about promising responsive materials for use in the design of Adaptive Façades, in order to help designers and technicians in decision-making processes and to scope possible future applications in façades. Investigated materials were analysed from the Building Science standpoint; their weaknesses and threats in the built environment were highlighted, and their technical feasibility was examined through the study of their availability in the current market.
Autores: Zuazua Ros, Amaia (Autor de correspondencia); Ramos González, Juan Carlos; Martín Gómez, César; et al.
ISSN 0378-7788  Vol. 142  2017  págs. 158 - 166
The energy used for cooling has increased in recent decades and the predicted future rise in consumption is driving a pressing need for more efficient technologies. Some technologies use environmental sinks as heat dissipation alternatives. This paper presents a model validation with experimental data from a passive vertical cooling panel. The novelty of the solution lies in two main characteristics. The first is that the panel is in a vertical position, and thus the heat sink is the ambient temperature and surrounding instead of the sky temperature. The second is that the panel is north-oriented. Avoiding the sun lengthens the operating time to the entire day, while most studies explore options that are limited to night radiation. The aim is to include this element as a heat exchanger before water moves into the cooling tower from the condenser stage in cooling systems. The results have shown that the model approaches significantly the experimental data with an average error of 1.5% in the dissipated heat. Besides, the cooling capacity of the panel varies from 107 to 230 W/m2 depending on the inlet temperature and fluid flow conditions, confirming the viability of the integration in buildings.
Autores: Ramos Ruiz, Germán; Fernández Bandera, Carlos; Gómez-Acebo Temes, Tomás; et al.
ISSN 0306-2619  Vol. 168  2016  págs. 691 - 705
Buildings today represent 40% of world primary energy consumption and 24% of greenhouse gas emissions. In our society there is growing interest in knowing precisely when and how energy consumption occurs. This means that consumption measurement and verification plans are well-advanced. International agencies such as Efficiency Valuation Organization (EVO) and International Performance Measurement and Verification Protocol (IPMVP) have developed methodologies to quantify savings. This paper presents a methodology to accurately perform automated envelope calibration under option D (calibrated simulation) of IPMVP ¿ vol. 1. This is frequently ignored because of its complexity, despite being more flexible and accurate in assessing the energy performance of a building. A detailed baseline energy model is used, and by means of a metaheuristic technique achieves a highly reliable and accurate Building Energy Simulation (BES) model suitable for detailed analysis of saving strategies. In order to find this BES model a Genetic Algorithm (NSGA-II) is used, together with a highly efficient engine to stimulate the objective, thus permitting rapid achievement of the goal. The result is a BES model that broadly captures the heat dynamic behaviour of the building. The model amply fulfils the parameters demanded by ASHRAE and EVO under option D.
Autores: Gómez-Acebo Temes, Tomás
ISSN 0364-5916  Vol. 45  2014  págs. 62-117
Autores: Antón Remírez, Raúl; Ayala, Gabriel; Mouzo, Francisco; et al.
ISSN 0949-149X  Vol. 30  Nº 2  2014  págs. 495 - 504
Autores: Rodríguez Sebastián, Juan Carlos; Lozada, L.; Tojal, C.; et al.
ISSN 1012-0394  Vol. 172-174  2011  págs. 1164 - 1170



Termodinámica (Ing.Gr.). 
Universidad de Navarra - Escuela de Ingeniería.



Desde 2012 soy vicerrector de Alumnos de la Universidad de Navarra. Con anterioridad he sido 6 años Director de Estudios de la Escuela de Ingenieros de la Universidad de Navarra (2004-2010), con un papel de liderazgo en el proceso de adaptación al Espacio Europeo de Educación Superior, del plan de enseñanza bilingüe inglés-castellano, y de la implantación de nuevas metodologías docentes.
Miembro del comité organizador de tres congresos de prestigio en el área, miembro del comité científico de un congreso internacional en seis de sus ediciones (CALPHAD XL, XLI, XLIII, XLIV, XLV y XLVI), y presidente del comité organizador en una ocasión (CALPHAD XLII, en San Sebastián, 2013). Director del Programa de Doctorado en Física Aplicada de la Escuela Superior de Ingenieros de la Universidad de Navarra (2005-2016). Evaluador de artículos para las revistas: Calphad: Computer Coupling of Phase Diagrams and Thermochemistry; Applied Thermal Engineering; International Journal of Materials Research (formerly Zeitschrift Fuer Metallkunde); Journal of Materials Research and Technology; Journal of Mining and Metallurgy, Section B: Metallurgy; Journal of Physics and Chemistry of Solids; Nanomaterials; Revista Latinoamericana de Metalurgia Y Materiales; Sustainability; Water. Evaluador de proyectos para la ANEP.
En cuanto a premios y distinciones cabe citar: "Highly Commended Paper Award" en el Congreso Euro PM2003 (primer autor de la ponencia), "Best Paper Award" en el Congreso Euro PM2007 (segundo autor) y en dos ocasiones "Designación de Grupo de Alto Rendimiento" por parte del Gobierno Vasco al Área de Consolidación de Polvos Metálicos y Cerámicos del CEIT (1999 y 2002).