Listar Dpto. Ingeniería Mecánica, Energética y de Materiales - Mekanika, Energetika eta Materialen Ingeniaritza Saila por fecha de publicación
Mostrando ítems 61-80 de 99
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Study of a complete thermoelectric generator behavior including water-to-ambient heat dissipation on the cold side
The reduction of the thermal resistances of the heat exchangers of a thermoelectric generation system (TEG), leads to a significant increase in the TEG efficiency. For the cold side of a thermoelectric module (TEM), a wide ... -
Development of nanostructured AA3103 by equal channel angular pressing and thermal treatments
This work presents a study related to the achievement of a nanometric structure in AA3103, employing severe plastic deformation processes (SPD), in this case equal channel angular pressing (ECAP). The changes in the ... -
Control of discrete event systems by means of discrete optimization and disjunctive colored PNs: application to manufacturing facilities
Artificial intelligence methodologies, as the core of discrete control and decision support systems, have been extensively applied in the industrial production sector. The resulting tools produce excellent results in ... -
Development and experimental validation of a thermoelectric test bench for laboratory lessons
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 ... -
Thermoelectric-driven autonomous sensors for a biomass power plant
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 ... -
Modelización y análisis del proceso de forja de componentes mecánicos obtenidos a partir de material nanoestructurado
En esta Tesis Doctoral se aborda un estudio relativo a la viabilidad de obtener componentes mecánicos de estructura submicrométrica y/o nanométrica a partir de materiales previamente procesados mediante SPD por ECAE. Para ... -
Study of corrosion in a biomass boiler
Biomass plants, apart from producing energy, help to reduce CO2(g) emissions. One of the biggest problems for their development is superheater corrosion due to fuel corrosivity, especially of the straw. This limits both ... -
Manufacturing of nanostructured rings from previously ECAE-processed AA5083 alloy by isothermal forging
The manufacturing of a functional hollow mechanical element or ring of the AA5083 alloy previously equal channel angular extrusion (ECAE) processed, which presents a submicrometric microstructure, is dealt with. For this ... -
Strain mapping and nanocrystallite size determination by neutron diffraction in an aluminum alloy (AA5083) severely plastically deformed through equal channel angular pressing
Six specimens of an aluminum alloy (AA-5083) extruded by Equal Channel Angular Pressing following two different routes plus a blank sample were examined with a neutron radiation of 1.5448 ˚ A. Macrostrain maps from the ... -
Analysis on the manufacturing of an AA5083 straight blade previously ECAE processed
Over these past few years, there have been a large number of technical papers published related to the problem of improving the mechanical properties of materials obtained through severe plastic deformation. Nevertheless, ... -
Caracterización de escorias metalúrgicas procedentes de yacimientos arqueológicos de Navarra (siglos II a.C.- IV d.C.)
Desde la Sección de Arqueología del Gobierno de Navarra llegó la propuesta de caracterizar una serie de piezas comprendidas entre el siglo II a.C. y el siglo IV d.C. procedentes de yacimientos arqueológicos de esta provincia ... -
Relationship between microstructure and fracture types in a UNS S32205 duplex stainless steel
Duplex stainless steels are susceptible to the formation of sigma phase at high temperature which could potentially be responsible for catastrophic service failure of components. Thermal treatments were applied to duplex ... -
Computational study on the thermal influence of the components of a thermoelectric ice maker on the ice production
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 ... -
Improvement of a thermoelectric and vapour compression hybrid refrigerator
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. ... -
Análisis de la influencia del tratamiento térmico de envejecimiento en la modificación de las propiedades mecánicas de la aleación AA6060 procesada por ECAE
En el presente trabajo se ha realizado un estudio de la modificación de las propiedades mecánicas de la aleación de aluminio AA6060 F, al ser deformada mediante deformación plástica severa empleando el proceso de extrusión ... -
Revisión y estado del arte de la corrosividad del etanol y sus mezclas con gasolina
Actualmente, el etanol se presenta como una fuente importante de combustible renovable para el sector de la automoción. Se sabe que los carburantes tradicionales, como la gasolina, no han causado problemas de corrosión, ... -
Revisión sobre nitruraciones láser de aleaciones de titanio
Una técnica comúnmente utilizada para la mejora de la resistencia a desgaste de las aleaciones de titanio es la nitruración de la superficie, utilizando la deposición física o química de vapor, la implantación iónica o el ... -
Influence of metallic die temperature in the solidification of Cu-10%Al-2%Fe alloy
The phases obtained in copper aluminium bronze alloy (Cu-Al10-Fe2) cast into a permanent die were investigated. The parameters examined were the pre-heating temperatures of the die and the graphite coating thickness. The ... -
Development and experimental validation of a computational model in order to simulate ice cube production in a thermoelectric ice maker
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, ... -
Study of thermoelectric systems applied to electric power generation
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 ...