• Computational study on the thermal influence of the components of a thermoelectric ice maker on the ice production 

      Rodríguez García, Antonio Upna; Astrain Ulibarrena, David Upna; Martínez Echeverri, Álvaro Upna; González Vian, José Upna (Springer USTMSIEEE, 2012)   Artículo / Artikulua  OpenAccess
      The main objective of this paper is to study the thermal resistances of two components of a thermoelectric ice maker installed in a no-frost refrigerator, in order to optimize the ice production. This study is conducted ...
    • Development and experimental validation of a computational model in order to simulate ice cube production in a thermoelectric ice maker 

      Rodríguez García, Antonio Upna; González Vian, José Upna; Astrain Ulibarrena, David Upna (Elsevier, 2009)   Artículo / Artikulua  OpenAccess
      We have developed a computational model which allows the simulation of a thermoelectric device to make ice cubes in a vapor compression domestic fridge. This model solves both the thermoelectric and heat transfer equations, ...
    • Development and experimental validation of a thermoelectric test bench for laboratory lessons 

      Rodríguez García, Antonio Upna; Astrain Ulibarrena, David Upna; Martínez Echeverri, Álvaro Upna; Aranguren Garacochea, Patricia Upna; Pérez Artieda, Miren Gurutze Upna (OmniaScience, 2013)   Artículo / Artikulua  OpenAccess
      The refrigeration process reduces the temperature of a space or a given volume while the power generation process employs a source of thermal energy to generate electrical power. Because of the importance of these two ...
    • Experimental investigation of the applicability of a thermoelectric generator to recover waste heat from a combustion chamber 

      Aranguren Garacochea, Patricia Upna; Astrain Ulibarrena, David Upna; Rodríguez García, Antonio Upna; Martínez Echeverri, Álvaro Upna (Elsevier, 2015)   Artículo / Artikulua  OpenAccess
      A thermoelectric generator prototype has been built; it produces 21.56 W of net power, the produced thermoelectric power minus the consumption of the auxiliary equipment, using an area of 0.25 m2 (approximately 100 W/m2). ...
    • Experimental study and optimization of thermoelectric-driven autonomous sensors for the chimney of a biomass power plant 

      Rodríguez García, Antonio Upna; Astrain Ulibarrena, David Upna; Martínez Echeverri, Álvaro Upna; Aranguren Garacochea, Patricia Upna (2014)   Artículo / Artikulua  OpenAccess
      In the work discussed in this paper a thermoelectric generator was developed to harness waste heat from the exhaust gas of a boiler in a biomass power plant and thus generate electric power to operate a flowmeter installed ...
    • Improvement of a thermoelectric and vapour compression hybrid refrigerator 

      Astrain Ulibarrena, David Upna; Martínez Echeverri, Álvaro Upna; Rodríguez García, Antonio Upna (Elsevier, 2012)   Artículo / Artikulua  OpenAccess
      This paper presents the improvement in the performance of a domestic hybrid refrigerator that combines vapour compression technology for the cooler and freezer compartments, and thermoelectric technology for a new compartment. ...
    • Net thermoelectric power generation improvement through heat transfer optimization 

      Aranguren Garacochea, Patricia Upna; Astrain Ulibarrena, David Upna; Rodríguez García, Antonio Upna; Martínez Echeverri, Álvaro Upna (Elsevier, 2017)   Artículo / Artikulua
      Thermoelectric generation contributes to obtain a more sustainable energetic system giving its potential to harvest waste heat and convert it into electric power. In the present study a computational optimal net generation ...
    • Oscillatory motions in restricted N-body problems 

      Alvarez-Ramírez, Martha; Rodríguez García, Antonio Upna; Palacián Subiela, Jesús Francisco Upna; Yanguas Sayas, Patricia Upna (Elsevier, 2018)   Artículo / Artikulua
      We consider the planar restricted N-body problem where the N−1 primaries are assumed to be in a central configuration whereas the infinitesimal particle escapes to infinity in a parabolic orbit. We prove the existence of ...
    • Study of thermoelectric systems applied to electric power generation 

      Rodríguez García, Antonio Upna; González Vian, José Upna; Astrain Ulibarrena, David Upna; Martínez Echeverri, Álvaro Upna (Elsevier, 2009)   Artículo / Artikulua  OpenAccess
      A computational model has been developed in order to simulate the thermal and electric behaviour of the thermoelectric generators. This model solves the non linear system of equations of the thermoelectric and heat transfer ...
    • Thermoelectric-driven autonomous sensors for a biomass power plant 

      Rodríguez García, Antonio Upna; Astrain Ulibarrena, David Upna; Martínez Echeverri, Álvaro Upna; Gubía Villabona, Eugenio Upna; Sorbet Presentación, Francisco Javier Upna (Springer USTMSIEEE, 2013)   Artículo / Artikulua  OpenAccess
      This work presents the design and development of a thermoelectric generator intended to harness waste heat in a biomass power plant, and generate electric power to operate sensors and the required electronics for wireless ...
    • Zero-power-consumption thermoelectric system to prevent overheating in solar collectors 

      Martínez Echeverri, Álvaro Upna; Astrain Ulibarrena, David Upna; Rodríguez García, Antonio Upna (Elsevier, 2014)   Artículo / Artikulua  OpenAccess
      Highly promoted by the European Union Climate and Energy Package for 2020, solar collectors stand out as the most promising alternative to meet water heating demands. One of the most limiting problems in these systems ...