Browsing by Subject "620"

Aesthetic impact of Solar Energy Systems. Conceptual framework. social perception, and European projects involvement

Sánchez-Pantoja Belenguer, Núria (Date of defense: 2020-11-30)

We are currently witnessing a constant increase in the presence of renewable energies in the urban environment, especially solar energy. This inevitably causes a visual impact that is not always socially accepted. The main ...

Aliatges magnètics nanocristal·lins de base ferro i aliatges Heusler: producció i caracterització

Carrillo Berlanga, Albert (Date of defense: 2020-01-17)

This work is focused on the production and characterization of: (1) Fe based nanocrystalline soft magnetic materials of NANOPERM and HITPERM families and (2) Heusler magnetic shape memory alloys. Within the first typology, ...

Allocation of GHG emissions in a paper mill, an application tool to reduce emissions

Aldrich Tomàs, Remei (Date of defense: 2009-04-30)

El sector de pasta i paper és considerat un dels set sectors industrials més intensius en consum energètic. La producció i consum d'electricitat i de vapor esdevenen les fonts majoritàries d'emissions de gasos d'efecte ...

Alternative refrigerant mixtures to Isobutane (R-600a): energy efficiency enhancement and flammability reduction

Calleja-Anta, Daniel (Date of defense: 2024-06-25)

This doctoral thesis explores alternative refrigerant mixtures to isobutane (R-600a) for vapor compression refrigeration systems, aiming to improve energy efficiency and reduce flammability. Isobutane, widely used in Europe ...

Ambient carbon dioxide capture and conversion via membranes

Nogalska, Adrianna (Date of defense: 2018-10-22)

El canvi climàtic causat per l'augment del contingut de CO2 a l'atmosfera està causant gran preocupació avui dia. La constant necessitat de generació d'energia verda ens va inspirar a desenvolupar un sistema fotosintètic ...

Analysis and development of experimental characterization methodologies of mode II fracture toughness on CFRP bonded joints

Pérez Galmés, Magdalena (Date of defense: 2018-07-27)

Adhesives have been shown to be an excellent solution for joining fibre reinforced polymer (FRP) components thanks to their capacity to redistribute loads, reduces stress concentrations and contribute to overall weight ...

Analysis and optimization of composite stringers

Badalló i Cañellas, Pere (Date of defense: 2015-07-17)

The use of the stiffened panels in the aircraft/aeronautical industry has been growing in the last decades. On the other hand, the exponential growth in the use of composite materials in the last years has had a ...

Analysis of circular bond-type anchorages for prestressing composite rods under quasi-static, fatigue and time-dependent loads

Puigvert Cobos, Francesc (Date of defense: 2014-10-20)

En estructures pretesades sotmeses a ambients corrosius, s'està estudiant la possibilitat de substituir els tendons d’acer per tendons que no pateixin els efectes de la corrosió. En aquest sentit, els materials compostos ...

Analysis of process-induced defects on steered-fiber panels for aeronautical applications

Falcó Salcines, Olben (Date of defense: 2014-04-10)

Currently, the use of Automated Fiber Placement technology allows, large composite aircraft components to be manufactured with high quality materials and introduce new laminate concepts. Among such concepts are the tow-steered ...

Analysis of unreinforced and TRM-strengthened brick masonry walls subjected to eccentric axial load

Bernat Masó, Ernest (Date of defense: 2014-02-07)

A significant number of buildings are supported by load-bearing masonry walls. The preservation of these worldwide used structures is a sustainable alternative. However, there is little research about the structural response ...

Análisis de la producción hidroeléctrica en base a las implicaciones en la sostenibilidad energética

Naranjo Silva, Héctor Sebastián (Date of defense: 2024-02-20)

(English) Technical, ecological, territorial, and cultural transformations at various levels and spaces of society where hydroelectric projects exist often involve conflicts, new knowledge regimes, different local practices, ...

Análisis del comportamiento de las fachadas de madera en zonas con clima mediterráneo : evaluación de la degradación de probetas de madera de diferentes especies, tratamientos y acabados en cinco zonas con climas mediterráneos

Burgos Leiva, Camila (Date of defense: 2016-05-30)

This research aims to study the behavior of wooden facades in Mediterranean climate, to check its performance and durability through two years of weathering. We performed a theoretical studyof sorne examples of traditiona ...

Análisis numérico de los efectos del pretesado sobre estructuras textiles laminares tensoestáticas. Evaluación del esfuerzo de pretesado en estructuras textiles laminares tensoestáticas parabólicas, para analizar sus efectos y determinar criterios para su predimensionamiento

Gimferrer Vilaplana, Xavier (Date of defense: 2015-07-15)

The main objective of this Thesis is to determinate the behaviour of the prestress effect of a fabric structure. On the understanding that the prestress of a fabric structure is a fundamental part of its stability and ...

Análisis resistente de estructuras de obra de fábrica mediante redes funiculares simuladas computacionalmente

Andreu Torras, Antoni (Date of defense: 2006-09-22)

Este trabajo tiene por objetivo desarrollar una estrategia orientada a resolver de forma computacional el equilibrio estático de las obras pétreas formadas por elementos unidimensionales empleando la analogía clásica de ...

Análisis teórico y experimental de fluidos con bajo potencial de efecto invernadero como alternativas al HFC-245fa en ciclos orgánicos Rankine de baja temperatura

Molés Ribera, Francisco (Date of defense: 2015-12-02)

La presente tesis tiene como objetivo la evaluación de fluidos de trabajo con bajo potencial de efecto invernadero como alternativas al HFC-245fa en ciclos orgánicos Rankine, en su aplicación a baja temperatura. Los ...