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Descripción
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| The purpose of this thesis is to study the approximation to phenomena of heat transfer in glazed buildings through their scale replicas. The central task of this thesis is, therefore, the comparison of the thermal performance of scale models without distortion with the corresponding thermal performance of the full-scale prototype. The main data for comparison between the scale model and the prototype will be indoor air temperatures. In the first chapter on the State of the Art, it will be shown a broad vision, consisting of a historic review of uses of scale models, from antiquity to our days. In the section State of the Technique, are presented the benefits and difficulties associated with their implementation. Additionally, in the section State of the Research current scientific papers and theses on scale models are reviewed. Specifically, we focus on functional scale models, with or without distortion. Functional scale models are scale models that replicate also one ? or some ? of the functions of their corresponding prototypes. Scale model with distortion are considered scale models with intentional changes, on one hand, in dimensions ? scaled unevenly ? and, on the other hand, in constructive characteristics or materials, in order to get a specific performance. Consequently, scale models without distortion, or undistorted scale models - scaled evenly ?, are those replicating, to the extent possible, without distortion, the dimensional and constructive configurations of their prototypes of reference. These undistorted and functional scale models are especially useful for architects because they can be used, simultaneously, as functional elements of analysis and as decision-making elements in the design. Although they are versatile, in general, it is remarkable that these types of models are used very little for the study of the thermal performance of buildings. Subsequently, the theories related to the analysis of the experimental collected thermal data from the scale models and their applicability to the corresponding fullscale prototypes, will be explained. Thereafter, it is detailed the experiments in laboratory and at outdoor conditions. Firstly, experiments carried out with simple cube models at different scales. The prototype ? bigger in size ? and the corresponding undistorted scale model have been subjected to same environmental conditions in every experimental test. Secondly, a step forward is taken with simultaneous experimental tests of an undistorted scale model of a relatively simple lightweight and glazed building construction. This experiment consists of monitoring the undistorted scale model of the prototype workshop located in the School of Architecture (ETSAM) of the Technical University of Madrid (UPM) . For the analysis of experimental data, known related theories and resources are applied, such as, direct comparisons, statistical analyses, Dimensional Analysis and last, but not least important, simulations. Simulations allow us, specifically, flexible comparisons with experimental data. Here, apart the use of the simulation software EnergyPlus, a simulation algorithm is developed ad hoc for this research. Finally, the discussion and conclusions of this research are exposed. | |
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Internacional
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Si |
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ISBN
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Tipo de Tesis
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Doctoral |
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Calificación
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Sobresaliente |
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Fecha
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14/01/2016 |