Listar Departament: Enginyeria de Sistemes Industrials i Disseny por autoría "1f7ef3b4-db71-4973-b61a-061e0591ee56"
Mostrando ítems 1-20 de 21
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A novel vacuum pressure sensor using a thermoelectric device
Beltrán-Pitarch, Braulio; García-Cañadas, Jorge Elsevier (2020)We present the proof-of-concept of a new vacuum pressure sensor based on a new operating principle. The new sensor is formed by the simple combination of a thermoelectric (TE) module that is contacted at both sides by ... -
Applications of impedance spectroscopy in thermoelectricity
García-Cañadas, Jorge; Beltrán-Pitarch, Braulio The Abdus Salam International Centre for Theoretical Physics (ICTP) (2019-03-12)t is widely used in a lot of different fields (solar cells, fuel cells, corrosion, supercapacitors, batteries, etc.). • Powerful and very reliable equipment are available in the market. • It allows the separation of the ... -
Characterization of thermal contacts between heat exchangers and a thermoelectric module by impedance spectroscopy
Beltrán-Pitarch, Braulio; Vidan-Falomir, Francisco; García-Cañadas, Jorge Elsevier (2019)Heat to electricity energy conversion efficiency of a thermoelectric (TE) device is not only influenced by the TE materials properties, but it also depends on the temperature difference between both sides of the TE legs. ... -
Complete Characterization of Thermoelectric Materials by Impedance Spectroscopy
Beltrán-Pitarch, Braulio; Prado-Gonjal, Jesus; Powell, Anthony V.; Martínez-Julián, Fernando; García-Cañadas, Jorge American Chemical Society (2019-05-01)Thermoelectric materials can directly convert waste heat into electricity. Because of the vast amount of energy available as waste heat in our society, these materials could contribute to reduce our dependence on fossil ... -
Comprehensive impedance spectroscopy equivalent circuit of a thermoelectric device which includes the internal thermal contact resistances
Beltrán-Pitarch, Braulio; Maassen, Jesse; García-Cañadas, Jorge Elsevier (2021-06-26)Thermoelectric devices are widely used as solid-state refrigerators and have potential energy generation appli-cations. Their characterization is key to develop more efficient devices and monitor their performance. Electrical ... -
Defect governed zinc-rich columnar AZO thin film and contact interface for enhanced performance of thermocouples
Luo, Bingwei; Cao, Lili; Zhang, Jinyang; Fei, LUO; Zhou, Haitao; Kexin, Ma; Beltrán-Pitarch, Braulio; Solis de la Fuente, Mauricio; Vidan-Falomir, Francisco; García-Cañadas, Jorge Royal Society of Chemistry (2022-03-01)The research on the stable thermoelectric properties and contact interface of high-precision thin-film thermocouples lags far behind the demand. In this study, a zinc-rich Al-doped ZnO (AZO) thin film was fabricated, in ... -
Determination of the thermoelectric properties of a skutterudite-based device at practical operating temperatures by impedance spectroscopy
Yoo, Chung-Yul; Yeon, Changho; Jin, Younghwan; Kim, Yeongseon; Song, Jinseop; Yoon, Hana; Sang Hyun, Park; Beltrán-Pitarch, Braulio; García-Cañadas, Jorge; Min, Gao Elsevier (2019-10-01)Skutterudite-based thermoelectric materials are promising candidates for waste heat recovery applications at intermediate temperatures (300–500 °C) owing to their high dimensionless figure of merit and power factor. Recently, ... -
Determination of thermal conductivity, thermal diffusivity, and specific heat of liquids using a thermoelectric module
Mendiola Curto, Víctor; Beltrán-Pitarch, Braulio; García-Cañadas, Jorge IOP Publishing (2024)Managing heat through working fluids is essential in many applications, as well as the development of new fluids with improved properties. Therefore, the characterization of their thermal properties, which is usually a ... -
Equivalent circuit definition and calendar aging analysis of commercial Li(NixMnyCoz)O2/graphite pouch cells
Beltran, Hector; Ayuso Olmeda, Pablo; Vicente-Agut, Nuria; Beltrán-Pitarch, Braulio; García-Cañadas, Jorge; Pérez, Emilio Elsevier (2022-05-06)Aging-induced degradation of commercial Li-ion pouch cells with lithium nickel-manganese‑cobalt-oxide-based cathodes and graphite anodes is studied at various operating conditions (temperature and voltage) by galvanostatic ... -
Experimental conditions required for accurate measurements of electrical resistivity, thermal conductivity, and dimensionless figure of merit (ZT) using Harman and impedance spectroscopy methods
Beltrán-Pitarch, Braulio; Prado-Gonjal, Jesus; Powell, Anthony V.; García-Cañadas, Jorge AIP Publishing (2019-01-11)The Harman method is used extensively for the characterization of the dimensionless figure of merit ZT of thermoelectric (TE) materials and devices. However, its accuracy has often been questioned, since in many cases there ... -
Ideal Impedance Spectroscopy Equivalent Circuits for Thermoelectric Materials and Devices
García-Cañadas, Jorge; Beltrán-Pitarch, Braulio IEEE (2022-09)Impedance spectroscopy has been intensively developed in the last years in the field of thermoelectric materials. Current impedance models collect in high detail all the processes that occur in thermoelectric devices. In ... -
Impedance Spectroscopy Analysis of Thermoelectric Modules Fabricated with Metallic Outer External Layers
Beltrán-Pitarch, Braulio; García-Cañadas, Jorge American Chemical Society (2021-11-23)In recent years, thermoelectric (TE) devices have been used in several refrigeration applications and have gained attention for energy generation. To continue the development of devices with higher efficiency, it is necessary ... -
Impedance spectroscopy analysis of thermoelectric modules under actual energy harvesting operating conditions and a small temperature difference
Beltrán-Pitarch, Braulio; Vidan-Falomir, Francisco; Carbó, Marc; García-Cañadas, Jorge Elsevier (2024-06-15)Thermoelectric (TE) devices can convert heat into electricity and have gained great interest as energy harvesters in many applications, such as self-powered sensors, solar TE generators and industrial waste heat recovery. ... -
Influence of convection at outer ceramic surfaces on the characterization of thermoelectric modules by impedance spectroscopy
Beltrán-Pitarch, Braulio; García-Cañadas, Jorge American Institute of Physics (AIP) (2018-02)Impedance spectroscopy is a useful method for the characterization of thermoelectric (TE) modules. It can determine with high accuracy the module's dimensionless figure of merit (zT) as well as the average TE properties ... -
Large Power Factor Improvement in a Novel Solid–Liquid Thermoelectric Hybrid Device
Márquez García, Lourdes; Beltrán-Pitarch, Braulio; Powell, Damian; Gao, Min; García-Cañadas, Jorge American Chemical Society (2018-01-09)The performance of thermoelectric materials has been improved in the past few years by a significant reduction of the thermal conductivity, but this parameter has now reached its (amorphous) limit, which makes the enlargement ... -
Large power factor improvement in a thermoelectric oxide using liquid electrolytes
García-Cañadas, Jorge; Márquez García, Lourdes; Beltrán-Pitarch, Braulio The Abdus Salam International Centre for Theoretical Physics (ICTP) (2019-03-12)• A new hybrid system formed by a nanostructured mesoporous solid permeated by a liquid electrolyte has been conceived to improve the thermoelectric power factor. • The concept has been demonstrated employing Sb:SnO2 and ... -
Measurement of thermal conductivity and thermal diffusivity using a thermoelectric module
Beltrán-Pitarch, Braulio; Márquez García, Lourdes; Min, Gao; García-Cañadas, Jorge IOP Publishing Ltd (2017)A proof of concept of using a thermoelectric module to measure both thermal conductivity and thermal diffusivity of bulk disc samples at room temperature is demonstrated. The method involves the calculation of the integral ... -
Power factor improvement in a solid–liquid thermoelectric system formed by Sb:SnO2 in contact with a chromium complex solution
Castro Ruiz, Sergio; Márquez García, Lourdes; Solis de la Fuente, Mauricio; Beltrán-Pitarch, Braulio; Mota-Babiloni, Adrián; Vidan-Falomir, Francisco; Íñigo-Rabinal, P.; Guisado-Barrios, Gregorio; García-Cañadas, Jorge Royal Society of Chemistry (2023)Thermoelectric (TE) materials can convert heat into electricity. Good TE materials should have high power factors (PF) and low thermal conductivities. PF = S2σ is governed by the Seebeck coefficient S and the electrical ... -
Prismatic Spreading–Constriction Expression for the Improvement of Impedance Spectroscopy Models and a More Accurate Determination of the Internal Thermal Contact Resistances of Thermoelectric Modules
Aljaghtham, Mutabe; Song, Ge; García-Cañadas, Jorge; Beltrán-Pitarch, Braulio American Chemical Society (2023-06-27)Thermoelectric (TE) devices can convert heat to electrical power or use electrical power to generate a temperature difference. Their characterization is essential to develop devices with higher efficiency. Impedance ... -
Thermal conductivity, electrical resistivity, and dimensionless figure of merit (ZT) determination of thermoelectric materials by impedance spectroscopy up to 250 °C
Beltrán-Pitarch, Braulio; Prado-Gonjal, Jesus; Powell, Anthony V.; Ziolkowski, Pawel; García-Cañadas, Jorge AIP Publishing (2018-07)Impedance spectroscopy has been shown as a promising method to characterize thermoelectric (TE) materials and devices. In particular, the possibility to determine the thermal conductivity λ, electrical conductivity σ, and ...