493 research outputs found
Printed Circuit Board (PCB) design process and fabrication
This module describes main characteristics of Printed Circuit Boards (PCBs). A brief history of PCBs is introduced in the first chapter. Then, the design processes and the fabrication of PCBs are addressed and finally a study case is presented in the last chapter of the module.Peer ReviewedPostprint (published version
Valor taxonĂłmico de la pilosidad de los frutos en centranthus calcitrapae (l.) Dufresne (valerianaceae)
Two different phenotypes have been observed with regard to fruit hairiness in Centranthus calcitrapaethroughout the Iberian PenĂnsula, Baleario Island and France: hirsute and glabrous fruits. In this paper the inheritance of this character in two Andalusian populations has been inferredby using artificial crossings. It has been shown that fruit hairiness is based on a simple two-allele mendelian locus being hairiness dominant over the recessive glabrous fruits. Therefore,this character should not be used for separation of taxa.Centranthus calcitrapae presenta en la PenĂnsula IbĂ©rica, Islas Baleares y Francia individuos con frutos lisos o hirsutos. Estudiado el comportamiento genĂ©tico de este carácter, por medio de cruzamientos artificiales, entre individuos de dos poblaciones andaluzas, llegamos a la conclusiĂłn de que está relacionado con la dominancia (frutos hirsutos) o recesividad (frutos glabros) de un Ăşnico gen. Por ello, la pilosidad de los frutos no deberĂa ser utilizada en la separaciĂłn de categorĂas taxonĂłmicas
Study of PV systems for self-consumption at the UPC based on simulations by using PVSol
The aim of this work is to carry out a sustainability study in five campuses of the Universitat Politècnica de Catalunya BarcelonaTech (UPC) around Catalunya, i.e. Campus North and South Campuses in Barcelona city, Campus Baix Llobregat, Campus Manresa and Campus Vilanova i la Geltrú. The amount of consumed energy included in the study for each campus corresponds to monitoring data of previous periods. The study analyses the expected energy production, as well as the self-consumption that can be achieved by using photovoltaic (PV) systems of 25, 50 and 100 kWp and c-Si, Poly or CdTe Technology in order to reduce the environmental impact in each campus. An economic analysis of all the proposed facilities was conducted to examine their financial feasibility.Peer ReviewedObjectius de Desenvolupament Sostenible::7 - Energia Assequible i No ContaminantObjectius de Desenvolupament Sostenible::4 - Educació de QualitatPostprint (published version
Innovation strategies to develop specific professional skills on photovoltaic systems engineering
This work describes experiences learned in teaching photovoltaic (PV) courses in Engineering Master Degrees at the UPC. These PV courses are included as elective courses in the Master of Energy Engineering included in the international master programs: Environomical Pathways for Sustainable Energy Systems (SELECT) and Renewable Energy (RENE) and in the Master Degree in Electronic Engineering at the Universitat Politècnica de Catalunya (UPC) in Barcelona, Spain. These Master Degrees are aligned with the objectives of the European SET plan and the objectives of KIC InnoEnergy in the field of renewable energies and aim at delivering education for high competency and quality engineering skills in the field. The content of these programmes is focused to the renewable technologies concept of “learning by doing”, so combining deep theory knowledge (top-down approach) with internship in industry co-advisored by the university and the industry (bottom-up approach) in an international environment
Analysis of spatial fixed PV arrays configurations to maximize energy harvesting in BIPV applications
This paper presents a new approach for efficient utilization of building integrated photovoltaic (BIPV) systems under partial shading conditions in urban areas. The aim of this study is to find out the best electrical configuration by analyzing annual energy generation of the same BIPV system, in terms of nominal power, without changing physical locations of the PV modules in the PV arrays. For this purpose, the spatial structure of the PV system including the PV modules and the surrounding obstacles is taken into account on the basis of virtual reality environment. In this study, chimneys which are located on the residential roof-top area are considered to create the effect of shading over the PV array. The locations of PV modules are kept stationary, which is the main point of this paper, while comparing the performances of the configurations with the same surrounding obstacles that causes partial shading conditions. The same spatial structure with twelve distinct PV array configurations is considered. The same settling conditions on the roof-top area allow fair comparisons between PV array configurations. The payback time analysis is also performed with considering local and global maximum power points (MPPs) of PV arrays by comparing the annual energy yield of the different configurationsPeer ReviewedPostprint (author’s final draft
Peucedanum officinale l. subsp. brachyradium GarcĂa-MartĂn y Silvestre: nuevo taxon de Umbelliferae
Se propone un nuevo taxon de la familia UmbellĂferae, Peucedanum officinale L. subsp. brachyradium GarcĂa-Martin & Silvestre, recolectado en Sierra Bermeja (Málaga), dándose su descripciĂłn, ilustraciĂłn y ecologĂa
Fault detection and automatic supervision methodology for PV systems
In this work, we show a new methodology for automatic supervision and fault detection of PV
Systems, based mainly on the analysis of the power losses. This methodology includes parameter extraction
techniques to calculate main PV system parameters from monitoring data [1-2], taking into account the real
irradiance and module temperature, allowing simulation and evaluation of the PV system behaviour in real time.Postprint (published version
Internet vecĂ
V sĂşcasnosti architektĂşra zaloĹľená na Internete dovoluje vĂ˝menu sluĹľieb a tovarov medzi prvkami, zariadeniami a objektami pripojenĂ˝mi do siete. IoT sa odvoláva na sietovĂ© pripojenie kaĹľdodennĂ˝ch objektov, ktorĂ© sĂş casto vybavenĂ© urcitĂ˝m druhom inteligencie. V tomto kontexte mĂ´Ĺľe byt Internet taktieĹľ platforma pre zariadenia na elektronickĂş komunikáciu, zdielanie informáciĂ a špecifickĂ˝ch dát so svetom okolo nich. TakĹľe IoT mĂ´Ĺľe byt vnĂmanĂ˝ ako reálna evolĂşcia toho, co rozumieme pod slovom Internet. Internet bol z väcšej casti vyuĹľĂvanĂ˝ na spojovo orientovanĂ© aplikacnĂ© protokoly ako HTTP (Hypertext Transfer Protocol) a SMTP (Simple Mail Transfer Protocol). Napriek tomu v dnešnej dobe velkĂ© mnoĹľstvo inteligentnĂ˝ch zariadenĂ komunikuje medzi sebou a dalšĂmi riadiacimi systĂ©mami. Tento koncept je známy ako M2M (Machine-to-Machine communications).Peer ReviewedPostprint (published version
Internet de las cosas
Este es un curso de introducciĂłn a la IoT (Internet de las cosas). En los capĂtulos primeros
capĂtulos se introducen los conceptos básicos sobre la IoT. Seguidamente se presentan nociones
básicas sobre el protocolo de internet IPv6 que es el más utilizado en el entorno de la IoT y se
describen las principales aplicaciones, el estado actual del mercado y las tecnologĂas que
permiten la existencia de la IoT. Finalmente se analizan los retos de futuro que se consideran
más importantes.Postprint (published version
Internet of things
This is an introductory course to the IoT (Internet of things). In the early chapters the basics about the IoT are introduced. Then basics of IPv6 internet protocol that is the most used in IoT environment as well as main applications, the current state of the market and the technologies
that enable the existence of the IoT are described. Finally the future challenges that are considered most important are discussed.Peer ReviewedPostprint (published version
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