Lights and shadows : the implementation of artificial lighting in architecture

Aquest projecte pretén establir unes guies per millorar la il·luminació artificial en l'arquitectura, ja que normalment és emprada com un conjunt d'elements lumínics estudiats en termes quantitatius, i no qualitatius. En conseqüència, sense tenir en compte la nostra arquitectura, per tant, aquest estudi vol establir unes estratègies per millorar la il·luminació artificial en l'arquitectura actual.Este proyecto pretende establecer unas guías para mejorar la iluminación artificial en la arquitectura, puesto que normalmente es empleada como un conjunto de elementos lumínicos estudiados en términos cuantitativos, y no cualitativos. En consecuencia, sin tener en cuenta nuestra arquitectura, por lo tanto, este estudio quiere establecer unas estrategias para mejorar la iluminación artificial en la arquitectura actual.This project aims to establish guidelines to improve artificial lighting in architecture since it is usually used as a group of lighting elements studied in quantitative terms, not qualitative. Therefore, this project focuses to design strategies to improve artificial lighting in architecture today

Analysis and design of a drain water heat recovery storage unit based on PCM plates

© 2016. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/This paper is focused on the detailed analysis of a PCM plate heat storage unit with a particular configuration, looking for the maximum contact area with the fluid (water) and the minimum volume to be used in a real household application. In that sense, a numerical study of the thermal and fluid dynamic behaviour of the water flow and the PCM melting-solidification processes, together with the thermal behaviour of the solid elements of the unit, has been carried out. On the other hand, an experimental set-up has been designed and built to validate the numerical model and characterise the performance of the heat storage unit. The purpose of the numerical and experimental study is to present a series of results to describe the heat storage unit performance in function of the time. Thus, after a preliminary design study three different cases have been simulated and tested. A 7.2% of discrepancy between numerical results and experimental data has been evaluated for the heat transfer. The PCM heat storage unit designed is capable to store approx. 75% of the thermal energy from the previous process wasted water heat, and recover part of it to supply around 50% of the thermal energy required to heat up the next process.Peer ReviewedPostprint (author's final draft

Minimization procedure of experimental tests for calibration purposes, within HVAC&R energy efficiency framework

Simulation models and predictive tools need to be fast, accurate and robust at the same time. The models that have to provide numerical solutions under transient conditions for a long period of time need to be simple with the aim of minimizing the time respond, without losing the accuracy. Thus, previous experimental data and a calibration methodology are necessary to assure this objective, both are strictly necessary to reproduce the behaviour with accuracy expected. Consequently, even accurate information (e.g. look-up tables) for HVAC&R components (e.g. heat exchangers, fan/compressor, auxiliary elements, etc.) is known and all coupling system is developed, the minimization of experimental tests for calibration purposed based scattered data interpolation is now an important aspect, which looks for reducing the quantity of experiments necessary to assure the accuracy expected from an optimization point of view. The present work shows an optimization procedure based on test number minimization according detailed error comparison against existing previous data. Illustrative results for a specific component are presented highlighting test number reduction without losing accuracy.This project has received funding from the Clean Sky 2 Joint Undertaking under the European Union’s Horizon 2020 research and innovation programme under grant agreement No 755517.Peer ReviewedPostprint (published version

Dynamic simulation of indirect air conditioning systems with optimized computational time

Peer ReviewedPostprint (published version

Thermal System Oriented Simulation of Aircraft Electrical Environmental Control Systems Including its Electric Coupling

A flexible numerical platform based on libraries has been developed within the Dymola/Modelica framework to simulate Environmental Control Systems (ECS). The goal was to build up a flexible tool to analyse complex systems including their thermal and electrical perimeters at both steady and transient conditions focusing on three key characteristics: numerical robustness, optimal time consumption, and high accuracy. This document aims to underline both the most relevant features of the numerical tool and the main challenges addressed during its development. Some illustrative simulations are shown in order to highlight the tool capabilities.Peer ReviewedPostprint (published version

Diseño y cálculos mecánicos de un chasis de motocicleta eléctrica de competición

Treball Fi de Grau en Enginyeria en Tecnologies Industrials. Codi: ET1040. Curs acadèmic: 2016/201

Diseño mecánico para la adaptación a propulsión eléctrica de un kart-cross de competición

Treball final de Màster Universitari en Enginyeria Industrial. Codi: SJA020. Curs acadèmic: 2019/2020El presente Trabajo de Final de máster recoge el proceso y el desarrollo de diseño mecánico que se ha realizado en colaboración Área de Ingeniería Eléctrica de la universitat Jaume I, para la conversión a propulsión eléctrica de un kart-cross de competición. Para alcanzar el objetivo de mi parte en este proyecto, he realizado tareas de distintos tipos cuyos procedimientos y resultados se incluyen en este documento, enumeradas a continuación: - Mediciones de las distintas partes de interés y elementos que componen la parte de ciclo del kart-cross existente. - Modelado CAD 3D de los elementos medidos para generar la base sobre la que hay que disponer y montar los componentes que forman el sistema de propulsión eléctrica y sus elementos auxiliares. - Diseño de los soportes y anclajes para fijar los componentes necesarios al chasis del vehículo. - Estudio y comprobación mecánica de los soportes y elementos estructurales diseñados empleando software de cálculo mediante el método de los elementos finitos (MEF). - Análisis del conjunto resultante frente al conjunto inicial para valorar las prestaciones dinámicas del vehículo. En esta memoria se expone toda la información generada y necesaria para justificar coherentemente los procedimientos seguidos y la validación de los resultados obtenidos

SIRT1 enhances glucose tolerance by potentiating brown adipose tissue function

This is an open access article under the CC BY-NC-ND license.-- et al.[Objective]: SIRT1 has been proposed to be a key signaling node linking changes in energy metabolism to transcriptional adaptations. Although SIRT1 overexpression is protective against diverse metabolic complications, especially in response to high-fat diets, studies aiming to understand the etiology of such benefits are scarce. Here, we aimed to identify the key tissues and mechanisms implicated in the beneficial effects of SIRT1 on glucose homeostasis. [Methods]: We have used a mouse model of moderate SIRT1 overexpression, under the control of its natural promoter, to evaluate glucose homeostasis and thoroughly characterize how different tissues could influence insulin sensitivity. [Results]: Mice with moderate overexpression of SIRT1 exhibit better glucose tolerance and insulin sensitivity even on a low fat diet. Euglycemic-hyperinsulinemic clamps and in-depth tissue analyses revealed that enhanced insulin sensitivity was achieved through a higher brown adipose tissue activity and was fully reversed by housing the mice at thermoneutrality. SIRT1 did not influence brown adipocyte differentiation, but dramatically enhanced the metabolic transcriptional responses to β3-adrenergic stimuli in differentiated adipocytes. [Conclusions]: Our work demonstrates that SIRT1 improves glucose homeostasis by enhancing BAT function. This is not consequent to an alteration in the brown adipocyte differentiation process, but as a result of potentiating the response to β3-adrenergic stimuli.M.S. is funded by the CNIO and by grants from the MICINN (SAF), the Regional Government of Madrid, the European Research Council (CANCER&AGING; LS1, ERC-2008-AdG), the Botín Foundation, the Ramón Areces Foundation, and the AXA Foundation. P.J.F.M. is funded by the AECC. A.M.V. is funded by the following grant support: SAF2012-33283 (MINECO, Spain), Comunidad de Madrid S2010/BMD-2423, EFSD and Amylin Paul Langerhans Grant and Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM, ISCIII, Barcelona, Spain). P.M.G.R. is funded by the following grant support: BFU2011-24679 (MINECO, Spain) and he is a recipient of a Ramon y Cajal contract: RYC-2009-05158(MINECO, Spain).Peer Reviewe

Development of Innovative Heat Sinks for Power Electronics Cooling within the More Electrical Aircraft

Peer ReviewedPostprint (published version