Nuestros investigadores

Amaia Zuazua Ros

Construcción, Instalaciones y Estructuras
Escuela Técnica Superior de Arquitectura. Universidad de Navarra
Líneas de investigación
Integración de instalaciones y energía en arquitectura y urbanismo
Índice H
4, (WoS, 20/01/2021)

Publicaciones científicas más recientes (desde 2010)

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: Zuazua Ros, Amaia; Martín Gómez, César (Autor de correspondencia); Ibanez-Puy, E. ; et al.
ISSN 0960-1481  Vol. 131  2019  págs. 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.
Autores: Martín Gómez, César (Autor de correspondencia); Ibañez-Puy, E.; Zuazua Ros, Amaia; et al.
ISSN 2168-507X  Vol. 9  Nº 1  2019  págs. 1 - 6
Autores: Martín Gómez, César; Zuazua Ros, Amaia; Bermejo-Busto, J.; et al.
ISSN 2095-2635  Vol. 8  Nº 1  2019  págs. 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.
Autores: Zuazua Ros, Amaia; Martín Gómez, César; Vidaurre Arbizu, Marina; et al.
ISSN 0378-7788  Vol. 176  2018  págs. 371 - 379
Autores: Zuazua Ros, Amaia; Ramos González, Juan Carlos; Martín Gómez, César; et al.
ISSN 1755-1307  Nº 154  2018  págs. 1 - 8
Autores: Ibáñez-Puy, E.; Martín Gómez, César (Autor de correspondencia); Bermejo-Busto, J.; et al.
ISSN 0306-2619  Vol. 228  2018  págs. 681 - 688
Autores: Bermejo-Busto, J.; Martín Gómez, César; Zuazua Ros, Amaia; et al.
ISSN 0378-7788  Vol. 134  2017  págs. 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.
Autores: Zuazua Ros, Amaia; Martín Gómez, César; Ramos González, Juan Carlos; et al.
ISSN 1364-0321  Vol. 72  2017  págs. 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.
Autores: Ioannidis, Dimosthenis; Vidaurre Arbizu, Marina; Martín Gómez, César; et al.
ISSN 1617-4909  Vol. 21  Nº 3  2017  págs. 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.
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: Zuazua Ros, Amaia (Autor de correspondencia); Martín Gómez, César; Bermejo-Busto, Javier; et al.
ISSN 1996-3599  Vol. 9  Nº 3  2016  págs. 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.
Autores: Bermejo Busto, Javier; Martín Gómez, César; Zuazua Ros, Amaia; et al.
Revista: DYNA (ESPAÑA)
ISSN 0012-7361  Vol. 91  Nº 5  2016  págs. 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.
Autores: Martín Gómez, César; Biain Ugarte, J.; Zuazua Ros, Amaia
ISSN 2168-507X  Vol. 5  Nº 1  2015  págs. 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.
Autores: Martín Gómez, César; Zapata, Omayra; Villanueva, Sonia; et al.
ISSN 0304-3797  Vol. 38  Nº 5  2013  págs. 468 - 482
Autores: Perez Bou, Silvia; Zuazua Ros, Amaia; Vidaurre Arbizu, Marina; et al.
Libro:  Proceedings of the 19th European Roundtable for Sustainable Consumption and Production. Circular Europe for Sustainability
Vol. 2  2019  págs. 485 - 492
Autores: Martín Gómez, César; Bermejo Busto, Javier; Zuazua Ros, Amaia
Libro:  Familia y Sociedad en el Siglo XXI
2016  págs. 143 - 150
Autores: Martín Gómez, César; Istúriz, M.; Zuazua Ros, Amaia
Autores: Martín Gómez, César; Ibañez-Puy, Elia; Zuazua Ros, Amaia
Autores: Martín Gómez, César; Gironés Navarlaz, Javier; Mambrilla Herrero, Natalia; et al.



Prácticas Profesionales II (Diseño) . 
Universidad de Navarra - Escuela Técnica Superior de Arquitectura.

Prácticas Profesionales I (Diseño). 
Universidad de Navarra - Escuela Técnica Superior de Arquitectura.

Creative Lab I (GR. DISEÑO). 
Universidad de Navarra - Escuela Técnica Superior de Arquitectura.

Trabajo Fin de Grado (Gestión del Proyecto Técnico). 
Universidad de Navarra - Escuela Técnica Superior de Arquitectura.

Trabajo Fin de Grado (Gr. Diseño). 
Universidad de Navarra - Escuela Técnica Superior de Arquitectura.

Comprehensive Lab IV (Gr. Diseño). 
Universidad de Navarra - Escuela Técnica Superior de Arquitectura.