Our researchers

César Martín Gómez

Construcción, Instalaciones y Estructuras
Escuela Técnica Superior de Arquitectura. Universidad de Navarra
Research lines
Código UNESCO 241109: Regulación de la temperatura humana Código UNESCO 330500: Tecnología de la construcción, Código UNESCO 330800: Ingeniería y tecnología del medio ambiente Código UNESCO 3322: Tecnología Energética, Código UNESCO 330503: Grandes edificios y rascacielos, Código UNESCO 330506: Ingeniería civil, Código UNESCO 330517: Edificios industriales y comerciales, Código UNESCO 330537: Planificación urbana, Código UNESCO 332900: Planificación urbana, Código UNESCO 550601: Historia de la arquitectura, Código UNESCO 550624: Historia de la tecnología, Código UNESCO 580100: Teoría y métodos educativos
6, (Google Scholar, 02/03/2017)

Most recent scientific publications (since 2010)

Authors: Martín Gómez, César; Zuazua Ros, Amaia; Del Valle de Lersundi Campistegui, K.; et al.
ISSN 0378-7788  Vol. 231  2021  pp. 110593
Authors: Echeverría Huarte, Iñaki; Garcimartín Montero, Ángel; Cruz Hidalgo, Raúl; et al.
ISSN 2045-2322  Vol. 11  Nº 1  2021  pp. 1534
With people trying to keep a safe distance from others due to the COVID-19 outbreak, the way in which pedestrians walk has completely changed since the pandemic broke out1,2. In this work, laboratory experiments demonstrate the effect of several variables-such as the pedestrian density, the walking speed and the prescribed safety distance-on the interpersonal distance established when people move within relatively dense crowds. Notably, we observe that the density should not be higher than 0.16 pedestrians per square meter (around 6 m2 per pedestrian) in order to guarantee an interpersonal distance of 1 m. Although the extrapolation of our findings to other more realistic scenarios is not straightforward, they can be used as a first approach to establish density restrictions in urban and architectonic spaces based on scientific evidence.
Authors: Vidaurre Arbizu, Marina; Perez Bou, Silvia; Zuazua Ros, Amaia; et al.
ISSN 0959-6526  Vol. 291  2021  pp. 125960
Authors: Zuazua Ros, Amaia (Autor de correspondencia); Ramos González, Juan Carlos; Martín Gómez, César; et al.
Journal: 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.
Authors: Martín Gómez, César; Zuazua Ros, Amaia; Bermejo-Busto, J.; et al.
ISSN 2095-2635  Vol. 8  Nº 1  2019  pp. 17 - 31
The strategies for thermal regulation and environmental control found in nature are countless. In this article, a parallelism between animals and building energy systems is defined in order to identify and emphasize the immediate opportunities that biomimicry offers for future research. The motivation was the need to find alternative solutions to tackle problems mainly in the efficiency of heating, ventilation and cooling systems. Due to the wide range of possibilities offered by animals, this study is largely limited to the strategies that cold-blooded animals have developed through evolutionary adaptation to the environment. The method used for the analysis is based on a solution-based approach. Firstly, different animal thermoregulation strategies are defined (biological domain). Then the strategy is analyzed and classified into three categories. This classification is essential in order to formulate the parallelism with building systems (transfer phase). The final step is to identify the potential implementation (technological domain). This approach has been seen to be useful in creating new research opportunities based on biomimicry. In addition, suitable solutions arising from multidisciplinary team research are presented as promising answers to the challenges that building energy systems face nowadays.
Authors: Martín Gómez, César (Autor de correspondencia); Ibañez-Puy, E.; Zuazua Ros, Amaia; et al.
ISSN 2168-507X  Vol. 9  Nº 1  2019  pp. 1 - 6
Authors: Zuriguel Ballaz, Iker (Autor de correspondencia); Echeverría Huarte, Iñaki; Maza Ozcoidi, Diego; et al.
ISSN 0925-7535  Vol. 121  2019  pp. 394 - 402
We report experimental measurements obtained during the evacuation of 180 soldiers through a narrow door. Several conditions are analyzed in the evacuation drills, such as the degree of competitiveness (from rush to shove) and the influence of an obstacle placed before the exit. From the data, we compute the flow rate through the door and the velocity and density fields, as well as a map of the local evacuation time. We also present novel results on the pressure that the individuals exert on the wall adjacent to the door. Our study challenges the idea that an obstacle could be beneficial for pedestrian evacuations because of a hypothetical alleviation of pressure at the door. At the same time, we discover a correlation among the largest pressure peaks and the development of clogging.
Authors: Zuazua Ros, Amaia; Martín Gómez, César (Autor de correspondencia); Ibanez-Puy, E. ; et al.
ISSN 0960-1481  Vol. 131  2019  pp. 229 - 239
Researchers have spent decades exploring strategies for reducing energy consumption in buildings worldwide, proposing passive solutions and optimizing active systems. However, no breakthrough technology has been developed. The use of thermoelectricity in buildings for heating, cooling and ventilation has been proposed as an alternative solution to many systems anchored in our day-to-day. This paper seeks to classify, analyze and summarize the possibilities of the thermoelectric technology integration in buildings. The results obtained from the search were divided into two main groups: systems that are integrated in the building envelope and non-integrated systems that operate independently. Among the analyzed parameters, on the one hand the characteristics of the prototypes' components needed for the construction were described. On the other, the thermoelectric specific parameters required for optimization under the operating scenarios' conditions were studied. The results of most of the studies showed that even though the technology can provide the comfort conditions, still the performance of these systems is not competitive compared to conventional vapor compression systems. However, the advantages of thermoelectricity such us the non-use of refrigerants or the high durability, makes this technology an alternative solution to consider, of which interest is growing in line with recent studies. (C) 2018 Elsevier Ltd. All rights reserved.
Authors: Garcimartín Montero, Ángel (Autor de correspondencia); Maza Ozcoidi, Diego; Pastor, J. M. ; et al.
ISSN 1367-2630  Vol. 20  2018 
The placement of obstacles in front of doors is believed to be an effective strategy to increase the flow of pedestrians, hence improving the evacuation process. Since it was first suggested, this counter-intuitive feature is considered a hallmark of pedestrian flows through bottlenecks. Indeed, despite the little experimental evidence, the placement of an obstacle has been hailed as the panacea for solving evacuation problems. In this work, we challenge this idea and experimentally demonstrate that the pedestrians flow rate is not necessarily altered by the presence of an obstacle. This result-which is at odds with recent demonstrations on its suitability for the cases of granular media, sheep and mice- differs from the outcomes of most of existing numerical models, and warns about the risks of carelessly extrapolating animal behaviour to humans. Our experimental findings also reveal an unnoticed phenomenon in relation with the crowd movement in front of the exit: in competitive evacuations, an obstacle attenuates the development of collective transversal rushes, which are hazardous as they might cause falls.
Authors: Lorente de Diego, Alba; Martín Gómez, César; Castro Molina, Francisco Javier;
Journal: ZARCH
ISSN 2341-0531  Nº 11  2018  pp. 168 - 183
Authors: Ibáñez Puy, María; Martín Gómez, César; Bermejo-Busto, J.; et al.
ISSN 0378-7788  Vol. 158  2018  pp. 1586-1592
Authors: Zuazua Ros, Amaia; Martín Gómez, César; Vidaurre Arbizu, Marina; et al.
ISSN 0378-7788  Vol. 176  2018  pp. 371 - 379
Authors: Zuazua Ros, Amaia; Ramos González, Juan Carlos; Martín Gómez, César; et al.
ISSN 1755-1307  Nº 154  2018  pp. 1 - 8
Authors: Ibáñez-Puy, E.; Martín Gómez, César (Autor de correspondencia); Bermejo-Busto, J.; et al.
ISSN 0306-2619  Vol. 228  2018  pp. 681 - 688
Authors: Martín Gómez, César; Fernández Urtasun, Rosa; Ozcáriz, Miriam M.; et al.
ISSN 0022-3840  Vol. 50  Nº 5  2017  pp. 1065 - 1086
Authors: Zuazua Ros, Amaia (Autor de correspondencia); Ramos González, Juan Carlos; Martín Gómez, César; et al.
ISSN 0378-7788  Vol. 142  2017  pp. 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.
Authors: Garcimartín Montero, Ángel; Pastor Gutiérrez, José Martín; Martín Gómez, César; et al.
ISSN 2045-2322  Vol. 7  Nº 1  2017  pp. 10792
When a sizable number of people evacuate a room, if the door is not large enough, an accumulation of pedestrians in front of the exit may take place. This is the cause of emerging collective phenomena where the density is believed to be the key variable determining the pedestrian dynamics. Here, we show that when sustained contact among the individuals exists, density is not enough to describe the evacuation, and propose that at least another variable -such as the kinetic stress- is required. We recorded evacuation drills with different degrees of competitiveness where the individuals are allowed to moderately push each other in their way out. We obtain the density, velocity and kinetic stress fields over time, showing that competitiveness strongly affects them and evidencing patterns which have been never observed in previous (low pressure) evacuation experiments. For the highest competitiveness scenario, we detect the development of sudden collective motions. These movements are related to a notable increase of the kinetic stress and a reduction of the velocity towards the door, but do not depend on the density.
Authors: Ibáñez Puy, María; Bermejo Busto, Javier; Martín Gómez, César; et al.
ISSN 0306-2619  Vol. 200  2017  pp. 303 - 314
A Thermoelectric Cooling-Heating Unit (TCHU) is an innovative technology that uses the thermoelectric phenomena as a heating¿cooling system for buildings. In TCHU, a direct current (DC) electrical current supplies the power to a Thermoelectric Equipment (TE) heat-pump system, which can transfer heat in one direction or another depending on the current flow. The unit is integrated in the building envelope. At this stage of the study, a second prototype of TCHU has been developed using commercially available TE technologies. In this case, a vertical configuration of 16 TE modules is studied for their potential application as a heating and cooling system for residential buildings. Different nocturnal tests have been developed to evaluate the performance of the new system under real conditions and to determine the coefficient of performance for these TE modules when operating under different voltage regimes. It has been studied not only the cooling mode but also the heating mode. Based on the measured data, it has been demonstrated that the system can be successfully installed as a heating or cooling system in buildings. Tests have confirmed the huge relevance of the temperature difference between the two sides of the cells, taking especial relevance in the cooling mode. It has also been demonstrated that for the cooling mode it is better to work with low voltage values. Besides, some theoretical analyses have been developed in order to find out the most suitable configuration to obtain the best Coefficient of Performance (COP) of the unit in both cooling and heating.
Authors: Ioannidis, Dimosthenis; Vidaurre Arbizu, Marina; Martín Gómez, César; et al.
ISSN 1617-4909  Vol. 21  Nº 3  2017  pp. 521 - 535
Occupancy schedules in building spaces play an important role in evaluating a building¿s energy performance. This work seeks to identify disparities between different occupancy estimation techniques; standardised occupancy profiles found in literature, business processes¿ based profiles through interviews and accurate profiles from real on-field measurements. The occupancy diversity profiles of secondary spaces in a healthcare facility building are analysed through descriptive statistics and t test methods over different time horizons. Occupancy measurements are obtained by utilising a novel, robust and highly accurate real-time occupancy extraction system which is established through a network of depth cameras. Results indicate that the utilisation of real occupancy data, along with elaboration of the business processes that take place in building spaces have the potential to support more precise profiles in Building Performance Simulation software tools.
Authors: Lavilla Iribarren, Ana Cristina; Martín Gómez, César; Pozo Municio, José Manuel
ISSN 0020-0883  Vol. 69  Nº 546  2017  pp. e197
La superación de la crisis que caracterizó la economía española en los años veinte permitió que pudiesen construirse más edificios y que fuese posible seguir los conceptos de las corrientes modernas europeas. Los cines fueron uno de los géneros más dados a ese intento de modernidad. Existen pocos ejemplos de verdadera calidad arquitectónica, y la mayoría de ellos se edificaron en las grandes ciudades, como Madrid y Barcelona. Y es en este contexto donde cobra todo sentido rescatar del pasado una de las grandes obras construidas en aquellos años: el Cine Monumental de Teodoro de Anasagasti, aportando datos arquitectónicos y tecnológicos adicionales a la historiografía existente.
Authors: Ibáñez Puy, María; Vidaurre Arbizu, Marina; Sacristán Fernández, José Antonio; et al.
ISSN 1364-0321  Vol. 78  2017  pp. 180 - 191
The use of Opaque Ventilated Façades (OVF) has considerably increased in recently years as an envelope solution in a variety of building types, climates, and design configurations. It is considered an appropriate solution not only for renovation of existing buildings but also for new buildings. The influence of ventilated façades in buildings is a constantly current issue in research always concluding the importance of the envelope in the reduction of energy needs in the whole building, and the importance of an accuracy model for the deep knowledge of the façade performance. Currently, the main interest in OVFs is their ability to reduce cooling thermal loads in Southern European locations. Although reference literature recognizes energy savings associated to the use of OVFs in comparison with traditional solutions, previous energy studies consider a limited number of locations and standard solutions. Trying to fill in an existing gap, this article includes information from different studies carried out in recent years which address the thermal and energy performance of OVFs. It also explains the implications of both external ambient conditions and design decision (external layer material, joints, air cavity width¿) in terms of the energy and thermal performance of OVFs. This paper also provides some key strategies for customizing the façade design according to specific climate conditions.
Authors: Zuazua Ros, Amaia; Martín Gómez, César; Ramos González, Juan Carlos; et al.
ISSN 1364-0321  Vol. 72  2017  pp. 73 - 82
The amount of energy consumed for cooling purposes is increasing and expected to rise in the following years. The active cooling mechanisms used to meet these requirements can be partially replaced by harnessing environmental conditions and developing passive solutions. Through the multidisciplinary knowledge offered by biomimicry, a bio-inspired solution was developed with the aim of reducing the drawbacks of cooling towers. This experimental study shows the development of a passive cooling panel prototype and attempts to analyse tests carried out in the north of Spain. The results show that with three different inlet temperatures (35, 45 and 55 °C) and a fluid flow rate of 0.5 l/min, the average heat dissipation power per unit area of the panel is 140.4, 284.8 and 309.7 W/m2, respectively. By increasing the flow rate to 1.5 l/min, the heat rejection rate rises to 250.8, 397.5 and 479.6 W/m2, respectively. These outcomes confirm the cooling potential of the passive panel and open the possibility to the development of numerous applications. Further development of this solution would seek the decrease of the peak demand and the reduction of the energy consumption of cooling towers in tertiary buildings or small industry.
Authors: Bermejo-Busto, J.; Martín Gómez, César; Zuazua Ros, Amaia; et al.
ISSN 0378-7788  Vol. 134  2017  pp. 25 - 36
Finding new solutions for energy recovery in buildings is crucial to diminish the energy consumption. Some proposals may unveil innovative products to solve this challenge. However, reinventing and reformulating the configuration of available solutions might be another way to find an inventive answer to the energetic problem. The main aim of this article is to check if several cores connected in a cascade layout and installed in two different rooms can provide a better performance making use of energy from exhaust air. This study was inspired by the rete mirabile of tuna. This strategy proposed by nature has been translated into building services. Thanks to this reinterpretation, a new configuration of heat recovery ventilators (HRVs) has been simulated with CFD software. The results obtained show that up to 44.5% of energy could be saved with the new configuration making it a promising solution and a foreseeable application for energy recovery in buildings.
Authors: Bermejo Busto, Javier; Martín Gómez, César; Zuazua Ros, Amaia; et al.
Journal: DYNA (ESPAÑA)
ISSN 0012-7361  Vol. 91  Nº 5  2016  pp. 507 - 511
The article proposes new ways of work to redesign previous Peltier cells prototypes using biomimetic methodologies. Biomimicry can be a source of fresh ideas to solve contemporary problems. Also in terms of energy saving and efficiency, animals can be of aid. Ectotherms, animals that depend on external factors to be in a range of `living temperature¿, have developed strategies to survive and adjust their metabolism regarding the environment and weather conditions. Social insects are ectotherm animals. One specimen of these species cannot be autonomous and would die if he is out of his nest for a long or even short time. Previous studies made about bees behaviour in beehives show up an automated and accurate work to maintain nest temperature. Strategies such as the heat shield or stigmergy have been translated to obtain better control of the air cavity and a decentralized computational control of the equipment.
Authors: Zuazua Ros, Amaia (Autor de correspondencia); Martín Gómez, César; Bermejo-Busto, Javier; et al.
ISSN 1996-3599  Vol. 9  Nº 3  2016  pp. 343 - 357
This paper is comprehended in the study of the application of the biomimicry science in building services and energy management, taking as a reference the case of tuna. Tuna generates heat in the muscles, organs and tissues of the inner area of its body (dark muscles). This heat is distributed in the periphery in order to maintain constant body temperature. From this biological reality, researchers analyse the possibility of altering the heating demand of an office on the basis of the heat conservation strategy applied by tuna, merely modifying the working-spaces. For this purpose, an existing office building with high architectonical quality parameters has been chosen and different scenarios have been defined in order to perform the energy simulations. The case studies correspond to the variations in the floor layout and occupancy density distribution. Besides, they are studied in three European cities with different climate. The evaluation of results is mainly focused on the heating demand since tuna strategy comprises the heat management. It is shown that the arrangement of high thermal load locals affects the heating demand of the building, being more efficient the tuna distribution in order to lower the demand.
Authors: Martín Gómez, César; Ibáñez Puy, María; Bermejo-Busto, J.; et al.
ISSN 0143-6244  Vol. 37  Nº 4  2016  pp. 431 - 449
The article describes from an architectonical point of view the design, assembly, and energy behavior of a prototype for air-conditioning in residential buildings using Peltier cells, which means the application in the field of construction of a technology used in very specific areas. The new system has been designed as an independent, prefabricated, modular construction element that must fit perfectly between the structural floors and is easily adapted to the demands of different buildings. The thermoelectric cooling heating unit is designed to offer a high level of comfort to those living in the building. The only mechanical elements are the dissipation heat fans placed on the outside of the prototype, and heat sinks to transfer the heat from the power elements, reducing the possibilities of failure. The result of all these ideas is the construction of a prefabricated module, consisting of a simplified inhabited housing unit with a thermoelectric installation serving the module, which has obtained a national patent. The results of the thermal and electric behavior demonstrate that the system does not work as well as had been expected; nevertheless, the system has a high potential for its use in buildings associated with photovoltaic.
Authors: Garcimartín Montero, Ángel; Parisi, D.R.; Pastor Gutiérrez, José Martín; et al.
ISSN 1742-5468  Nº 4  2016  pp. 043402
We report a thorough analysis of the intermittent flow of pedestrians through a narrow door. The observations include five different sets of evacuation drills with which we have investigated the effect of door size and competitiveness on the flow dynamics. Although the outcomes are in general compatible with the existence of the faster-is-slower effect, the temporal evolution of the instantaneous flow rate provides evidence of new features. These stress the crucial role of the number of people performing the tests, which has an influence on the obtained results. Once the transients at the beginning and end of the evacuation are removed, we have found that the time lapses between the passage of two consecutive pedestrians display heavy-tailed distributions in all the scenarios studied. Meanwhile, the distribution of burst sizes decays exponentially; this can be linked to a constant probability of finding a long-lasting clog during the evacuation process. Based on these results, a discussion is presented on the caution that should be exercised when measuring or describing the intermittent flow of pedestrians through narrow doors.
Authors: Zuriguel Ballaz, Iker; Olivares, J.; Pastor Gutiérrez, José Martín; et al.
ISSN 2470-0045  Vol. 94  Nº 3  2016  pp. 032302
In a recent work [Phys. Rev. E 91, 022808 (2015)] it was reported that placing an obstacle in front of a gate has a beneficial effect in the flow of sheep through it. Here, we extend such results by implementing three different obstacle positions. We have observed that the flow is improved in two cases, while it worsens in the other one; the last instance happens when the obstacle is too close to the door. In this situation, the outcomes suggest that clogging develops between the doorjamb and the obstacle, contrary to the cases when the obstacle is farther, in which case clogging always occurs at the very door. The effectiveness of the obstacle (a strategy put forward to alleviate clogging in emergency exits) is therefore quite sensitive to its location. In addition, the study of the temporal evolution of the flow rate as the test develops makes evident a steady behavior during the entire duration of the entrance. This result is at odds with recent findings in human evacuation tests where the flow rate varies over time, therefore challenging the fairness of straightforward comparisons between pedestrian behavior and animal experimental observations.
Authors: Durá Gúrpide, Isabel María; Martín Gómez, César; Rangel, Bárbara;
ISSN 1887-7052  Vol. 11  Nº 31  2016  pp. 71 - 92
Objetivo En un momento de intensa actividad en la reformulación de la arquitectura escolar, el colegio Nuestra Señora del Recuerdo de Luis Laorga incorporó avances en la tipología de acuerdo a las nuevas necesidades pedagógicas y destacó como una obra ejemplar de arquitectura. La investigación pretende identificar los valores y aportaciones de este edificio, así como determinar su relevancia en la historia de la arquitectura española. Metodología Este trabajo sitúa la obra en su contexto histórico, analiza en detalle el edificio a partir de la documentación original de la obra y determina su repercusión a través de su aparición en publicaciones de arquitectura de la época. Conclusiones Si bien el proyecto partió de patrones racionalistas, añadió aportaciones particulares que contribuyeron al desarrollo de la tipología escolar. Esta obra se convirtió en una referencia para proyectos posteriores gracias a su difusión a través de las revistas especializadas que equipararon por primera vez una escuela española a los ejemplos de vanguardia internacionales. Originalidad El colegio de Laorga, aunque fue valorado en el momento de su construcción, ha sido poco atendido por la historiografía, principalmente como consecuencia de su demolición. Por tanto, se considera valioso el estudio en detalle de este proyecto, para rescatar sus aportaciones y valores como obra arquitectónica. Este artículo no sólo se dirige a investigadores sino también al conjunto de los arquitectos por la vi
Authors: Martín Gómez, César; Durá Gúrpide, Isabel María
ISSN 0718-7262  Nº 18  2015  pp. 30 - 36
Este texto aporta datos concretos y resultados sobre cómo se realiza la docencia e investigación de los sistemas de instalaciones y energía en la Escuela Técnica Superior de Arquitectura de la Universidad de Navarra, de modo que puedan servir de referencia y orientación a profesores e investigadores ligados a estas áreas de conocimiento. Se trata de una metodología expositiva, en orden cronológico, de las actividades que se han realizado desde 2002 en el plano docente y de investigación. Esta secuencia habría que entenderla, por tanto, como una muestra del abanico de posibilidades abiertas a otros docentes e investigadores. This article provides specific data and findings about teaching and research of energy and facility systems in the Superior Technical School of Architecture of the University of Navarra so that they can be used as a benchmark and guidelines for teachers and researchers involved in these knowledge areas. It is a time sequenced expository approach of teaching and research activities performed since 2002. Hence, the sequence should be understood as a sample of the range of possibilities open to other teachers and scholars.
Authors: Martín Gómez, César; Vergara-Falces, Javier; Elvira-Zalduegui, Asier;
ISSN 2214-398X  Vol. 4  2015  pp. 19 - 27
This paper presents a methodology for risk analysis and assessment to manage territorial data based on Geographical Information Systems from the viewpoints of climatology, geography, disaster science, environmental science, fire safety and urban services. The results in this methodology are intended to support local and provincial government agencies to: make resource allocation decisions; make high-level planning decisions and raise public awareness of disasters risk, its causes, and ways to manage it. The Autonomous Community of Navarra, as a result of a special administrative status, possesses a number of specific features that have let it build up a high technological development in several fields. The main areas of research are healthcare and renewable energies, but also focused in the implementation of security systems at territorial level.These advances and particularities of the GIS software used by the fire fighters of this community will be the ones shown in this paper, as well as its prospective improvements in the collaboration with the experts responsible for urban planning of a School of Architecture.
Authors: Martín Gómez, César; Biain Ugarte, J.; Zuazua Ros, Amaia
ISSN 2168-507X  Vol. 5  Nº 1  2015  pp. 1 - 9
The Basilica of Arantzazu is a recognized project, designed by the architects Luis Laorga and Francisco Javier Sáenz de Oíza, one of the most emblematic works of the church architecture of the twentieth-century in Spain. Although widely studied by architectural criticism, nothing is known about its interesting HVAC services, so this article analyzes and puts forward a technical aspect, heating and ventilation, providing critical examination of the abundant and unprecedented existing information about the original design of the main building services in this project. Results include unpublished information, redrawing from original plans and theoretical consideration about the role of the architects in the design and construction of these building services.
Authors: Madrigal, María; Martín Gómez, César
ISSN 0210-4091  Nº 531  2015  pp. 49 - 54
El rendimiento estacional de una caldera relaciona la energía aprovechada en una máquina durante un periodo determinado de funcionamiento, y la energía total consumida por la máquina durante el mismo periodo. Este concepto, frente al de considerar solo el rendimiento puntual de la caldera, está llamado ha ocupar un lugar principal en el futuro de la clasificación energética de estos equipos. Desde este planteamiento, la mejora del rendimiento global del uso de las calderas puede lograrse con un avance tan `sencillo¿ como el de tener una lógica y mayor modulación de la potencia entregada por la caldera, de forma que se pueda ajustar la generación de energía a la demanda de cada momento y que, de esta manera, se reduzcan al máximo los ciclos de encendidos y apagados tan frecuentes en calderas con poca modulación, logrando así un menor desperdicio de energía. Contribuir a extender el empleo de esta tecnología aportando una serie de consideraciones teóricas y normativas es el objeto de este artículo.
Authors: Pastor Gutiérrez, José Martín; Garcimartín Montero, Ángel; Gago, P. A. ; et al.
ISSN 2470-0045  Vol. 92  Nº 6  2015  pp. 062817
The ¿faster-is-slower¿ (FIS) effect was first predicted by computer simulations of the egress of pedestrians through a narrow exit [D. Helbing, I. J. Farkas, and T. Vicsek, Nature (London) 407, 487 (2000)]. FIS refers to the finding that, under certain conditions, an excess of the individuals' vigor in the attempt to exit causes a decrease in the flow rate. In general, this effect is identified by the appearance of a minimum when plotting the total evacuation time of a crowd as a function of the pedestrian desired velocity. Here, we experimentally show that the FIS effect indeed occurs in three different systems of discrete particles flowing through a constriction: (a) humans evacuating a room, (b) a herd of sheep entering a barn, and (c) grains flowing out a 2D hopper over a vibrated incline. This finding suggests that FIS is a universal phenomenon for active matter passing through a narrowing.
Authors: Martín Gómez, César; López Carrillo, Patricia
ISSN 0210-4091  Vol. 526  2015  pp. 104 - 112
Authors: Ibáñez Puy, María; Sacristán Fernández, José Antonio; Martín Gómez, César; et al.
ISSN 2213-302X  Vol. 3  Nº 1  2015  pp. 15 - 25
In order to fulfil the current challenges for the European building sector, building design has diverged into two alternative directions: active technologies and passive design strategies. In the last few years, advanced and responsive building envelope components have represented a promising answer to these challenges. This paper presents the design and construction process of a project that aims to design, build and control the energy performance of an industrial-scale modular active ventilated facade prototype with a new Themoelectric Peltier System (TPS). The TPS is a thermoelectric HVAC heat pump system designed to be located in the building envelope and providing a high comfort level. Trying to optimize the energy performance of the traditional ventilated opaque facade, and make more efficient the energy performance of the TPS, the concept of adaptability has been applied to ventilated opaque facades. The essential research theme is to control the natural phenomena that take place inside the ventilated air cavity of the facade: taking advantage when heat dissipation is needed, and avoiding it when heat losses are not welcome. In order to quantify the previous statements, some facade prototypes are being built in Pamplona (Spain) and their energy performance is going to be analyzed during a year.
Authors: Martín Gómez, César; Resano Resano, David
ISSN 0267-7768  Vol. 30  Nº 2  2015  pp. 107 - 129
Built in 1955, the SEAT Dining Hall in Barcelona was the first structure to use aluminium in Spanish civil engineering, and the building was awarded the first prize in the international competition held by Reynolds in 1957. The aim of this article is to study the technical and construction systems used in the SEAT Dining Hall building as the catalysts of its architectural design. We will begin by placing the building in its historical context and by presenting its creators. We will then analyse how its pioneering, externally-visible aluminium structure provides the backbone for the requirements program. The modern image of the enclosure will be studied as an indispensable response to the climate in Barcelona. Finally, we will reconstruct the building services system for hygrothermic conditioning, for which there are no graphical records, in order to evaluate its ground-breaking techniques and how it is integrated into the building. In the final analysis, we will see how the collaboration between the architects Ortiz-Echagüe, Barbero and de la Joya with the engineers was fundamental in this building, which should be recognized as one of the most innovative, efficient and modern structures which make up the patrimony, both Spanish and international, of the 20th century
Authors: Garcimartín Montero, Ángel; Pastor Gutiérrez, José Martín; Ferrer, L. M. ; et al.
ISSN 2470-0045  Vol. 91  2015  pp. 022808
We present an experimental study of a flock passing through a narrow door. Video monitoring of daily routines in a farm has enabled us to collect a sizable amount of data. By measuring the time lapse between the passage of consecutive animals, some features of the flow regime can be assessed. A quantitative definition of clogging is demonstrated based on the passage time statistics. These display broad tails, which can be fitted by power laws with a relatively large exponent. On the other hand, the distribution of burst sizes robustly evidences exponential behavior. Finally, borrowing concepts from granular physics and statistical mechanics, we evaluate the effect of increasing the door size and the performance of an obstacle placed in front of it. The success of these techniques opens new possibilities regarding their eventual extension to the management of human crowds.
Authors: Martín Gómez, César; Bermejo Busto, Javier; Mambrilla Herrero, Natalia
ISSN 2214-398X  Vol. 3  2015  pp. 17 - 24
The aim of this innovative educational project is to encourage students¿ interest in one of the most underrated fields of fire safety: emergency lighting. So this educational project aims to combine the relationships amongst the evacuation safety theory, real manufacturers products and an specific software for its usage. In order to achieve it, a `technical cabinet¿ has been designed and built for its use in the Laboratory of a University School. The design, content and learning system of the cabinet confirmed the validity of the initial concept during the first year of use. A protocol has also been developed for the technical cabinet, so that the teaching experience may be of use in other Schools of Architecture.
Authors: Ibáñez Puy, María; Martín Gómez, César; Vidaurre Arbizu, Marina; et al.
ISSN 1876-6102  Vol. 61  2014  pp. 700 - 703
The research is looking for an innovative self-sufficient, industrialized and lightweight façade module that integrates a thermoelectric HVAC system. The principal aim of the research was to try providing a built answer to the current efficiency objectives (Directive 2010/31/CE), creating a façade solution that can be installed in new buildings or in already existing ones. This report tries to explain the theoretical design of this new façade system with Peltier cells.
Authors: Garcimartín Montero, Ángel; Zuriguel Ballaz, Iker; Pastor Gutiérrez, José Martín; et al.
ISSN 2352-1465  Vol. 2  2014  pp. 760 - 767
The Faster-Is-Slower effect (Helbing et al (2000)) is an important instance of self-organized phenomenon in pedestrian dynamics. Despite this, an experimental demonstration is still lacking. We present controlled tests where a group of students are asked to exit a room through a door. Instead of just measuring the evacuation times, we have analyzed the probability distribution of the time lapses between consecutive individuals. We show how it displays a power-law tail. This method displays clearly the Faster Is Slower effect, and also allows to assess the impact of several tactics that can be put in place to alleviate the problem.
Authors: Martín Gómez, César; Vidaurre Arbizu, Marina; Eguaras Martínez, María
ISSN 2334-2986  Vol. 2  Nº 2  2014  pp. 119 - 133
The article presents the process of placing sensors in a multi-sensorial network, dynamically incorporating a large number of heterogeneous input sources able to provide accurate monitoring data related with space occupancy, energy consumption, comfort levels and environmental quality.To evaluate this multi-sensorial network on real life conditions and on the specific business domains addressed by the Project, this sensing network will be based on heterogeneous sensors (light, motion, CO2, CO, temperature, relative humidity, existing infrastructure on video-surveillance, depth/range image generators, energy consumption, etc.) in order to provide an all-inclusive perspective of covered spaces. Thearticleispart of a global projecttodevelopprivacy-preserving human detection and tracking toolkit, whith the implementation of algorithms for calibration of multiple-depth sensors in the architectural sketch up of a building (BIM), and the development of techniques for extraction of occupancy-related statistics in the spatio-temporal domain of a building. It is an architectural prototype agile and scalable, integrated with the extended LS middleware, quepermite the training and calibration as decision making toolkit for Facility Managers.
Authors: Eguaras Martínez, María; Vidaurre Arbizu, Marina; Martín Gómez, César
ISSN 0306-2619  Vol. 114  2014  pp. 475 - 484
The current methods of building energy simulation that designers and engineers (D&E) use in order to find the energy performance of a building do not take into account the real behavior of the people who will use the building. The main aim of this paper is to show how by merely including the real behavior of people in building simulations there may be differences of up to 30%, through the study of a real pilot site simulation with existing software. These data confirm the possibilities of energy and money saving that energy simulation programs bring about when they include schedules of true use of the building (BIM).
Authors: Martín Gómez, César; Mambrilla Herrero, Natalia
ISSN 1136-0062  Vol. 41  2013  pp. 4 - 19
La protección contra incendios es una materia de conocimiento multidisciplinar y transversal que afecta al conjunto del edificio y de su proceso proyectual: disposición del programa, estructuras, construcción... Un texto aproximativo como este, corre el riesgo de ser demasiado generalista o de centrarse solo en algunos de los detalles, olvidando otros. En todo caso, ha de buscarse la consecución de tres objetivos: Seguridad de personas, protección de bienes, y continuidad, a ser posible, de las actividades.
Authors: Martín Gómez, César; Zapata, Omayra; Villanueva, Sonia; et al.
ISSN 0304-3797  Vol. 38  Nº 5  2013  pp. 468 - 482
Authors: Martín Gómez, César
ISSN 0210-4091  Nº 501  2012  pp. 15 - 20
Authors: Martín Gómez, César; Mambrilla Herrero, Natalia
ISSN 0210-4091  Nº 489 (Octubre)  2011  pp. 32 - 44
Authors: Martín Gómez, César
ISSN 1552-6100  Vol. 6  Nº 4  2011  pp. 37 - 44
Authors: Perez Bou, Silvia; Zuazua Ros, Amaia; Vidaurre Arbizu, Marina; et al.
Book title:  Proceedings of the 19th European Roundtable for Sustainable Consumption and Production. Circular Europe for Sustainability
Vol. 2  2019  pp. 485 - 492
Authors: Martín Gómez, César
Book title:  Actas del I Congreso Internacional de Innovación Docente e Investigación en Educación Superior: un reto para las áreas de conocimiento
2019  pp. 601
Authors: Salgado-Conrado, Lizbeth; Martín Gómez, César; Ibáñez Puy, María; et al.
Book title:  HVAC System
2018  pp. 123 - 141
Authors: Martín Gómez, César
Book title:  Les dispositifs du confort dans l'architecture du XXe siècle : connaissance et stratégies de sauvegarde = building environment and interior comfort in 20th-century architecture : understanding issues and developing conservation strategies
2016  pp. 265 - 278
Authors: Alonso del Val, Miguel Ángel; Chocarro Bujanda, Carlos; Martín Gómez, César
Book title:  International Conference at The Faculty of Architecture & Town Planning
2016  pp. 16 - 27
Authors: Martín Gómez, César; Bermejo Busto, Javier; Zuazua Ros, Amaia
Book title:  Familia y Sociedad en el Siglo XXI
2016  pp. 143 - 150
Authors: Eguaras Martínez, María; Martín Gómez, César; Vidaurre Arbizu, Marina; et al.
Book title:  eWork and eBusiness in Architecture, Engineering and Construction
2014  pp. 805 - 811
Authors: Martín Gómez, César
Book title:  Sinnergia 5. Arkitektura + ingurumena / mediambiente + tecnología
2013  pp. 11-15
Authors: Martín Gómez, César; Mambrilla Herrero, Natalia
Book title:  Actas preliminares del Congreso Internacional "Viajes en la transición de la arqutiectura española hacia la modernidad"
2010  pp. 233 - 238
Authors: Martín Gómez, César; Eguaras Martínez, María
Book title:  29th International Conference on Thermoelectrics
2010  pp. 232
Authors: Martín Gómez, César; Eguaras, María; Mambrilla Herrero, Natalia; et al.
Book title:  37th IAHS World Congress on Housing Science
2010  pp. 26 - 29
Authors: Martín Gómez, César; Mambrilla Herrero, Natalia; Eguaras, María; et al.
Book title:  I European Conference on Energy Eddiciency and Sustainability in Architecture an Planning, XXIX Cursos de Verano
2010  pp. 149 - 153
Authors: Martín Gómez, César; Istúriz, M.; Zuazua Ros, Amaia
Authors: Castells, M; Lorente, A.; Martín Gómez, César
Authors: Martín Gómez, César; Ibañez-Puy, Elia; Zuazua Ros, Amaia
Authors: Martín Gómez, César; Maté Múgica, E.;
Authors: Azcona Azaba, Miren Karmele; Martín Gómez, César
Authors: Martín Gómez, César; Gironés Navarlaz, Javier; Mambrilla Herrero, Natalia; et al.
Authors: Martín Gómez, César; Zhu, Jing Jing
Authors: Martín Gómez, César; Pozo Municio, José Manuel
Authors: Martín Gómez, César; Pozo Municio, José Manuel

Teaching experience


  Other relevant merits

César Martín Gómez es Doctor Arquitecto por la Universidad de Navarra. Ha sido responsable en los proyectos de instalaciones de edificios complejos tales como el Palacio de Congresos y Auditorio de Navarra, la Quinta Fase de la Clínica Universidad de Navarra o el Pabellón de España en la Expo de Zaragoza. Ha trabajado en I&S Ingenieros, en el Departamento de Arquitectura del Centro Nacional de Energías Renovables y como responsable de instalaciones y energía en Mangado & Asociados. Actualmente trabaja como investigador y profesor en el Departamento de Construcción, Instalaciones y Estructuras de la Universidad de Navarra.
César Martín-Gómez is PhD Architect from the Universidad de Navarra (Spain). He has been the responsible of building services in complex buildings such as the Auditorium of Navarra, the Clinic Universidad de Navarra or the Spanish Pavilion at the Saragossa Expo. He has worked in I&S Ingenieros, in the Architecture Department in the Spanish Renewable Energies Center (CENER), and as Building Services and Energy Coordinator in Mangado & Asociados. Nowadays he works as researcher and associate professor in the Construction, Building Services and Structures Department in the Universidad de Navarra.