Nuestros investigadores

José Antonio Sacristán Fernández

Departamento
Construcción, Instalaciones y Estructuras
Escuela Técnica Superior de Arquitectura. Universidad de Navarra
Líneas de investigación
Diseño de cerramientos de fachada innovadores.

Publicaciones científicas más recientes (desde 2010)

Autores: Ibáñez Puy, María; Martín Gómez, César; Bermejo-Busto, J.; et al.
Revista: ENERGY AND BUILDINGS
ISSN 0378-7788  Vol. 158  2018  págs. 1586-1592
Autores: Ibáñez Puy, María; Bermejo Busto, Javier; Martín Gómez, César; et al.
Revista: APPLIED ENERGY
ISSN 0306-2619  Vol. 200  2017  págs. 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.
Autores: Ibáñez Puy, María; Vidaurre Arbizu, Marina; Sacristán Fernández, José Antonio; et al.
Revista: RENEWABLE AND SUSTAINABLE ENERGY REVIEWS
ISSN 1364-0321  Vol. 78  2017  págs. 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.
Autores: Martín Gómez, César; Ibáñez Puy, María; Bermejo-Busto, J.; et al.
Revista: BUILDING SERVICES ENGINEERING RESEARCH AND TECHNOLOGY
ISSN 0143-6244  Vol. 37  Nº 4  2016  págs. 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.
Autores: Ibáñez Puy, María; Sacristán Fernández, José Antonio; Martín Gómez, César; et al.
Revista: JOURNAL OF FACADE DESIGN AND ENGINEERING
ISSN 2213-302X  Vol. 3  Nº 1  2015  págs. 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.
Autores: Ibáñez Puy, María; Martín Gómez, César; Vidaurre Arbizu, Marina; et al.
Revista: ENERGY PROCEDIA
ISSN 1876-6102  Vol. 61  2014  págs. 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.
Autores: Salgado-Conrado, Lizbeth; Martín Gómez, César; Ibáñez Puy, María; et al.
Libro:  HVAC System
2018  págs. 123 - 141

ACTIVIDAD DOCENTE

   
   

  OTROS MÉRITOS RELEVANTES

Durante toda mi carrera profesional, he compaginado, sin interrupción, las labores docentes con el trabajo en estudios de arquitectura. El objeto de mi trabajo ha estado siempre vinculado al de la enseñanza universitaria, es decir, la Construcción Arquitectónica en cualquiera de sus facetas: materiales, sistemas, puesta en obra, especificación técnica, historia.
Mi labor se ha centrado siempre en los aspectos técnicos: coordinando redacción de proyectos y direcciones de obra, durante varios años en el estudio AH& asociados Arquitectos, de Pamplona. En mi estudio particular, han abundado Los trabajos de reforma de cerramientos, que son objeto de mi tesis doctoral y proyectos de investigación.
Poseo una amplia experiencia docente: desde el inicio de mi carrera, he impartido docencia en múltiples asignaturas, todas ellas relacionadas con la construcción. Considero que soy capaz de transmitir conocimiento e ilusión en las materias técnicas e integrar sus contenidos en los procesos de proyecto y ejecución de las obras de arquitectura. Imparto docencia en el Master de Diseño Arquitectónico y en la facultad de Medicina en el ámbito de gestión de recintos hospitalarios.
He sido investigador principal en el proyecto (BIA2013-46463-R del Ministerio de Ciencia e Innovación del Gobierno de España) "Caracterización, construcción y análisis de un módulo de fachada activo con células Peltier" (presupuesto de 93700 euros). Además, he sido investigador en el proyecto BIA2013-49838-EXP del mismo ministerio "Rediseño de la integración de energía en edificios a partir de metabolismos animales" (38000 euros + IVA).
He Sido director de una tesis doctoral, defendida y calificada con Sobresaliente ¿CUM laude¿. He publicado libros y artículos diversos. En los últimos años, cuatro artículos en revistas científicas con índice de calidad (dos Q1 en la JCR; un Q1 y Un Q3 en el SJR). He dictado comunicaciones y publicado en libros De actas en numerosos congresos. He dirigido dos proyectos de Innovación docente.
Acudo regularmente a las universidades de La Coruña y del País Vasco a impartir conferencias o asignaturas En programas de posgrado y masters. Las evaluaciones emitidas por la junta directiva de la ETSA y las que se desprenden de las encuestas realizadas a los alumnos han sido siempre positivas.
He sido miembro de tribunal en 19 tesis doctorales.
He desempeñado diversos cargos de gestión: puse en marcha y dirigí el programa de adaptación de Arquitectos Técnicos al grado de Ingeniería (2009/10 a 2012/13); entre 2011/12 y 2014/15 fui organizador y responsable -con I. Quintana- del programa de visitas de Iniciación profesional (VIP) para alumnos de Arquitectura e Ingeniería de Edificación; desde diciembre de 2013 hasta junio de 2015 fui Director del Laboratorio de Arquitectura de la Universidad de Navarra.
Profesor Contratado Doctor desde el 1 de octubre de 2017.