Browsing by UPNA Author "Astrain Ulibarrena, David"
Now showing items 1-20 of 49
-
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 ... -
Computer simulations of silicide-tetrahedrite thermoelectric generators
Coelho, Rodrigo; Casi Satrústegui, Álvaro ; Araiz Vega, Miguel ; Astrain Ulibarrena, David ; Branco Lopes, Elsa; Brito, Francisco P.; Gonçalves, Antonio P. (MDPI, 2022)
Artículo / Artikulua
With global warming and rising energy demands, it is important now than ever to transit to renewable energy systems. Thermoelectric (TE) devices can present a feasible alternative to generate clean energy from waste heat. ... -
Corrosion behavior in volcanic soils: in search of candidate materials for thermoelectric devices
Berlanga Labari, Carlos ; Catalán Ros, Leyre ; Fernández Palacio, José; Pérez Artieda, Miren Gurutze ; Astrain Ulibarrena, David (MDPI, 2021)
Artículo / Artikulua
Thermoelectric generators have emerged as an excellent solution for the energy supply of volcanic monitoring stations due to their compactness and continuous power generation. Nevertheless, in order to become a completely ... -
Design and experimental development of thermoelectric generators for shallow geothermal anomalies of volcanic origin
Catalán Ros, Leyre (2020)
Tesis doctoral / Doktoretza tesia
En el contexto energético actual, caracterizado por un incesante aumento en el consumo de energía y una gran dependencia de los combustibles fósiles, resulta imprescindible apostar por sistemas eficientes y basados en ... -
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 ... -
Enhanced behaviour of a passive thermoelectric generator with phase change heat exchangers and radiative cooling
Astrain Ulibarrena, David ; Jaramillo-Fernández, Juliana; Araiz Vega, Miguel ; Francone, Achille; Catalán Ros, Leyre ; Jacobo-Martín, Alejandra; Alegría Cía, Patricia; Sotomayor-Torres, Clivia M. (Elsevier, 2023)
Artículo / Artikulua
Heat exchangers are essential to optimize the efficiency of Thermoelectric Generators (TEGs), and heat pipes without fans have proven to be an advantageous design as it maintains the characteristic robustness of ... -
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 development of a novel thermoelectric generator without moving parts to harness shallow hot dry rock fields
Alegría Cía, Patricia; Rodríguez García, Antonio ; Catalán Ros, Leyre ; Astrain Ulibarrena, David ; Araiz Vega, Miguel (2021)
Contribución a congreso / Biltzarrerako ekarpena
Nowadays, geothermal energy in shallow hot dry rocks is not exploited enough due to the high economic and environmental impact as well as the lack of scalability of the existing technologies. Here, thermoelectricity has a ... -
Experimental development of a novel thermoelectric generator without moving parts to harness shallow hot dry rock fields
Alegría Cía, Patricia; Catalán Ros, Leyre ; Araiz Vega, Miguel ; Rodríguez García, Antonio ; Astrain Ulibarrena, David (Elsevier, 2022)
Artículo / Artikulua
Nowadays, geothermal energy in shallow hot dry rock fields is not exploited enough due to the high economic and environmental impact as well as the lack of scalability of the existing technologies. Here, thermoelectricity ... -
Experimental enhancement of a CO2 transcritical refrigerating plant including thermoelectric subcooling
Sánchez, Daniel; Aranguren Garacochea, Patricia ; Casi Satrústegui, Álvaro ; Llopis, R.; Cabello, Ramón; Astrain Ulibarrena, David (Elsevier, 2020)
Artículo / Artikulua
CO2 is an excellent natural refrigerant that can be used in almost any commercial cooling application thanks to its useful range of evaporative temperatures and excellent environmental properties. However, due to its low ... -
Experimental evaluation of a transcritical CO2 refrigeration facility working with an internal heat exchanger and a thermoelectric subcooler: performance assessment and comparative
Casi Satrústegui, Álvaro ; Aranguren Garacochea, Patricia ; Araiz Vega, Miguel ; Sánchez, Daniel; Cabello, Ramón; Astrain Ulibarrena, David (Elsevier, 2022)
Artículo / Artikulua
The use of carbon dioxide in transcritical state has become one of the most used solutions to comply with the F-Gas directive and reduce greenhouse gases emissions from refrigeration systems at high ambient temperatures. ... -
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 ...
