Browsing by UPNA Author "Astrain Ulibarrena, David"
Now showing items 1-20 of 30
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Assessing the reliability of current simulation of thermoelectric heat pumps for nearly zero energy buildings: expected deviations and general guidelines
Martínez Echeverri, Álvaro
; Díaz de Garayo, Sergio; Aranguren Garacochea, Patricia ; Astrain Ulibarrena, David (Elsevier, 2019)
Artículo / Artikulua 
This paper makes evident that a rigorous review of simulation methods for thermoelectric heat pumps in nearly-zero energy buildings is needed, as incoherent results during verification and validation of simulation models ... -
Auxiliary consumption: a necessary energy that affects thermoelectric generation
Aranguren Garacochea, Patricia; Araiz Vega, Miguel ; Astrain Ulibarrena, David (Elsevier, 2018)
Artículo / Artikulua
Waste heat recovery can apply to a wide range of applications, from transportation, or industries to domestic appliances. Thermoelectric generation technology applied to those cases could produce electrical energy and thus ... -
Computational and experimental study of a complete heat dissipation system using water as heat carrier placed on a thermoelectric generator
Aranguren Garacochea, Patricia; Astrain Ulibarrena, David ; Pérez Artieda, Miren Gurutze (Elsevier, 2014)
Artículo / Artikulua
The heat dissipation systems which have liquids as heat carriers outperform conventional dissipation systems at thermoelectric generators (TEGs). However, new elements need to be introduced such as pumps, secondary heat ... -
Computational study of geothermal thermoelectric generators with phase change heat exchangers
Catalán Ros, Leyre; Araiz Vega, Miguel ; Aranguren Garacochea, Patricia ; Astrain Ulibarrena, David (Elsevier, 2020)
Artículo / Artikulua
The use of thermoelectric generators with phase change heat exchangers has demonstrated to be an interesting and environmentally friendly alternative to enhanced geothermal systems (EGS) in shallow hot dry rock fields ... -
Computational study on the thermal influence of the components of a thermoelectric ice maker on the ice production
Rodríguez García, Antonio; Astrain Ulibarrena, David ; Martínez Echeverri, Álvaro ; González Vian, José (Springer USTMSIEEE, 2012)
Artículo / Artikulua
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; González Vian, José ; Astrain Ulibarrena, David (Elsevier, 2009)
Artículo / Artikulua
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; Astrain Ulibarrena, David ; Martínez Echeverri, Álvaro ; Aranguren Garacochea, Patricia ; Pérez Artieda, Miren Gurutze (OmniaScience, 2013)
Artículo / Artikulua
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 ... -
Estudio y optimización de los sistemas de intercambio de calor en generación termoeléctrica aplicada al aprovechamiento del calor residual
Aranguren Garacochea, Patricia (2015)
Tesis doctoral / Doktoretza tesia
La presente tesis doctoral estudia el aprovechamiento del calor residual mediante generación termoeléctrica para la obtención de potencia eléctrica generada gracias al efecto Seebeck. Dos son las aproximaciones empleadas, ... -
Experimental and computational study on thermoelectric generators using thermosyphons with phase change as heat exchangers
Araiz Vega, Miguel; Martínez Echeverri, Álvaro ; Astrain Ulibarrena, David ; Aranguren Garacochea, Patricia (Elsevier, 2017)
Artículo / Artikulua
An important issue in thermoelectric generators is the thermal design of the heat exchangers since it can improve their performance by increasing the heat absorbed or dissipated by the thermoelectric modules. Due to its ... -
Experimental evidence of the viability of thermoelectric generators to power volcanic monitoring stations
Catalán Ros, Leyre; Garacochea Sáenz, Amaia; Casi Satrústegui, Álvaro ; Araiz Vega, Miguel ; Aranguren Garacochea, Patricia ; Astrain Ulibarrena, David (MDPI, 2020)
Artículo / Artikulua
Although there is an important lack of commercial thermoelectric applications mainly due to their low efficiency, there exist some cases in which thermoelectric generators are the best option thanks to their well-known ... -
Experimental investigation of the applicability of a thermoelectric generator to recover waste heat from a combustion chamber
Aranguren Garacochea, Patricia; Astrain Ulibarrena, David ; Rodríguez García, Antonio ; Martínez Echeverri, Álvaro (Elsevier, 2015)
Artículo / Artikulua
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; Astrain Ulibarrena, David ; Martínez Echeverri, Álvaro ; Aranguren Garacochea, Patricia (2014)
Artículo / Artikulua
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 ... -
Heat exchangers for thermoelectric devices
Astrain Ulibarrena, David; Martínez Echeverri, Álvaro (InTechOpen, 2012)
Capítulo de libro / Liburuen kapitulua
This chapter shows in the first place the influence of heat exchangers on the performance of both thermoelectric generation and thermoelectric refrigeration devices. Then, there are presented different types of heat ... -
Heat pipes thermal performance for a reversible thermoelectric cooler-heat pump for a nZEB
Aranguren Garacochea, Patricia; Díaz de Garayo, Sergio; Martínez Echeverri, Álvaro ; Araiz Vega, Miguel ; Astrain Ulibarrena, David (Elsevier, 2019)
Artículo / Artikulua
The nZEB standards reduce the energy demand of these buildings to a minimum, obtaining this little energy from renewable resources. Taking these aspect into consideration, a thermoelectric cooler-heat pump is proposed to ... -
Improvement of a thermoelectric and vapour compression hybrid refrigerator
Astrain Ulibarrena, David; Martínez Echeverri, Álvaro ; Rodríguez García, Antonio (Elsevier, 2012)
Artículo / Artikulua
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. ... -
Improvements in the cooling capacity and the COP of a transcritical CO 2 refrigeration plant operating with a thermoelectric subcooling system
Astrain Ulibarrena, David; Merino Vicente, Amaya ; Catalán Ros, Leyre ; Aranguren Garacochea, Patricia ; Araiz Vega, Miguel ; Sánchez, D.; Cabello, R.; Llopis, R. (Elsevier, 2019)
Artículo / Artikulua
Restrictive environmental regulations are driving the use of CO 2 as working fluid in commercial vapour compression plants due to its ultra-low global warming potential (GWP 100 = 1) and its natural condition. However, at ... -
Influence of temperature and aging on the thermal contact resistance in thermoelectric devices
Rodríguez García, Antonio; Pérez Artieda, Miren Gurutze ; Beisti Antoñanzas, Irene ; Astrain Ulibarrena, David ; Martínez Echeverri, Álvaro (Springer, 2020)
Artículo / Artikulua
During thermal design in the first phases development, thermoelectric systems, such as thermoelectric generators, the most important parameter affecting the performance is thermal resistance of the components. This paper ... -
Modelización y desarrollo experimental de un sistema de generación termoeléctrica basado en efecto Seebeck. Aplicación a gases de escape en calderas de combustión
Araiz Vega, Miguel (2018)
Tesis doctoral / Doktoretza tesia
La situación energética actual y todos los problemas medioambientales, políticos y económicos asociados a ella, hacen cada vez más necesaria una optimización de los sistemas de generación eléctrica y una incorporación ... -
Net thermoelectric power generation improvement through heat transfer optimization
Aranguren Garacochea, Patricia; Astrain Ulibarrena, David ; Rodríguez García, Antonio ; Martínez Echeverri, Álvaro (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 ... -
New opportunities for electricity generation in shallow hot dry rock fields: a study of thermoelectric generators with different heat exchangers
Catalán Ros, Leyre; Aranguren Garacochea, Patricia ; Araiz Vega, Miguel ; Pérez Artieda, Miren Gurutze ; Astrain Ulibarrena, David (Elsevier, 2019)
Artículo / Artikulua
Despite being one of the largest renewable sources, geothermal energy is not widely utilized for electricity generation. In order to leverage shallow hot dry rock (HDR) fields, the present paper proposes an alternative to ...
