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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Caractérisation et valorisation de protections solaires pour la conception de bâtiments : analyse expérimentale et propositions de modélisations / Characterization and enhancement of shading solar devices in order in the context of solar building design : experimental analysis and modelling proposals

Dugué, Antoine 18 October 2013 (has links)
Lors d’une démarche de modélisation énergétique d’un bâtiment, la prise en compte de l’enveloppe solaire reste souvent imprécise. L’objet du travail présenté ici est la description détaillée de solutions de protections solaires, induisant un tirage thermique (bardage, store), dans un objectif de modélisation et de valorisation pour répondre aux besoins d’industriels du secteur ; la caractérisation des performances permet alors d’assister la maitrise d’œuvre en phase conception.La mise en place d’une plateforme expérimentale – mur exposé sud muni d’une protection solaire devant lame d’air – a permis la mesure de températures d’airs et d’éléments solides présents dans le système, de vitesses d’écoulement dans la lame d’air ouverte, et du flux radiatif incident. Deux types de bardage bois, un type de store et un type de métal déployé ont été considérés.Parallèlement, un modèle 1D amélioré de transfert de chaleur dans le système étudié est développé. Trois familles de modèle de convection dans la lame d’air sont identifiées, présentées et intégrées dans le modèle global. La description de l’écoulement dans la lame d’air est retenue à partir d’analyses des résultats expérimentaux.Un modèle simplifié d’intégration de tels systèmes de protections solaires dans des plateformes de simulation thermique de bâtiments est proposé, basé sur la paramétrisation des sollicitations extérieures par le facteur solaire. La méthode de calcul du facteur solaire est présentée. Le caractère intrinsèque facteur solaire et son intérêt sont discutés notamment à partir d’analyse de sensibilités. / During the design process of a building, the energetic modelling of the solar envelop is often imprecise. The purpose of the present work is the detailed description of solar shading devices that induce a chimney effect such as claddings or blinds, which would allow their promotion in order to meet the industrial needs of the sector. An experimental platform – south facing wall with a shading solar device that define an air gap – has been set up and allow the measurement of temperatures, air flows in the ventilated air gap, and the incident solar radiation. Two different wooden claddings, one type of blinds and one type of expanded metal were considered.A 1D model has been developed by considering precisely the heat transfers in the system. Three families of convection model are identified, presented and integrated in the overall model. The description of the airflow in the air gap is chosen from analysis of the experimental results.A simplified model that allows the integration of such solar shading devices in a building simulation platform has been developed; it is based on the parameterization of external solicitations as function of the shading device properties. The calculation method of the solar factor is presented. The intrinsic nature of the solar factor is then discussed using sensibility analysis.
22

Vinařství / Winegrowing

Kulenda, Jan January 2018 (has links)
The diploma thesis subject is the proposal of the winery with a focus on the production of quality wine with the attribute and with a capacity of 30 000 bottles per year. The winery provides the possibility of accommodation in 6 units with a total capacity of 14 people with extension for meals. The viticulture is situated in the outskirts of Popice. The winery consists of three first floor detached buildings of a broken elongated shape, SO 01, SO 02 and SO 03, the first one is partially sub-basement. The SO 01 has wine production character in the cellar, the first floor provides background for employees, creates administrative spaces and offers catering for the public. Objects SO 02 and SO 03 serve to accommodate guests, the first one taking into account barrier-free use. Construction system is brick wall, in first floor of ceramic blocks and the cellar from blocks of lost formwork filled with concrete. The façade consists of an ETICS thermal insulation composite system and a ventilated façade. Cellar ceiling structures are solved with monolithic reinforced concrete slabs. The objects are roofed with gable and shad roofs with titan-zinc roof covering and bearing structure made of glued lamellar wood trusses.
23

Penzion pro seniory / Retirement home

Homola, Jan January 2019 (has links)
This diploma thesis deals with the project documentation for the execution of the pension for seniors. The land is located in the village of Kozlany. Pension serves long-term accommodation for 30 people. The building has one underground and three above-ground floors. The stop is done with a single-shell surface impermeable roof. The construction is designed as a monolithic skeleton.
24

Horský penzion s restaurací / Mountain guest house and restaurant

Dudáš, Peter January 2019 (has links)
The title of my diploma thesis is Mountain Pension with Restaurant and is written in English. My task was to create a mountain guesthouse that would serve as a background for other cottages in the neighborhood. I designed a wellness center as well as a restaurant and accomodation in the building. It is a two-storey with basement. The ground floor is reserved for the restaurant, the basement for wellness and the attic is designed for temporary accomodation. From a technical point of view, the construction system consists of a brick walls and monolithic ceilings. The main vertical supporting elements are ceramic walls and the main horizontal elements are one-way reinforced slabs which are reinforced using reinforced concrete core. The roof is made of wooden trusses.
25

Analýza nákladů stavebního objektu v důsledku variantních změn hliníkových konstrukcí / Cost analysis of a building as a result of changes in the variant of aluminum structures

Múčková, Simona January 2016 (has links)
The aim of my thesis is cost analysis of a building a result of changes in the variant of aluminum structures. The thesis is divided into theoretical and practical part. In the theoretical part, the issues are addressed in general terms and in the practical applies to specific construction contract.
26

Polyfunkční dům / Multifunctional Building

Kozelková, Klára January 2017 (has links)
The subject of this thesis is to design a multifunctional building. The proposed structure consists of two separated buildings by an expansion joint. The first building has floor ground floor and includes a residential part with seventeen dwelling units and three commercial spaces. The second building contains two ground floors and includes café. The residential part is covered with flat roof without operating. The building with café is covered by green roof. The multifunctional building has been designed with two separate parking areas with corresponding number of parking places.
27

Větrání obvodových plášťů budov z hlediska konstrukčních detailů pasivních a nízkoenergetických domů / Ventilation of the building envelope

Šagát, Erik January 2017 (has links)
The dissertation thesis is focused on non-transparent ventilated façade constructions, airflow in the ventilated cavity and the building envelope temperatures in relation with the different parameters of the construction and the ventilated cavity. The aim of this work is to optimize the temperature behavior of the building envelope during the summer season when the overheating is the most distinctive. The numerical and experimental methods with many different variants of façade constructions were used to investigation. The variants were compared and evaluated by the measured values of airflow speed in the ventilated cavity, temperature in the ventilated cavity and on the surfaces of constructions around the cavity. The result of the investigation is the evaluation of the influence of the airflow resistances or the reflectance of the surfaces around the ventilated cavity. Part of the thesis was formulated in relation with the project of MPPF - Multifunctional Plug & Play Facade during the internship at TU Graz. The efficiency of some parts of the energy active façade in this project depends on the temperature. The part of the results is the patented passive system for ventilation of building envelope and the patented cavity panel for ventilated facades.
28

Pediatric Delirium in Mechanically Ventilated Patients and Use of Benzodiazepines

Wright, Jacqueline Lee 26 April 2021 (has links)
No description available.
29

A 3D Finite Element Simulation of Ventilated Brake Disc Hot Spotting

Tang, Jinghan, Bryant, David, Qi, Hong Sheng 15 June 2016 (has links)
No / Hot spots are high temperature thermal gradients and localisations that are circumferentially distributed on a disc surface which can occur during heavy duty braking. Vibrations and noise can be triggered by hot spotting as well as damage to the disc surface. The experimental investigations suggest that the trigger condition and distribution of hot spots are related to the disc geometry, especially for ventilated discs. To investigate the effects of geometry and structure of a ventilated disc on hot spotting, a 3D finite element model was established. A fast simulation method of hot spotting in 3D was implemented in the model to enable a parametric analysis to be performed more efficiently. The results were validated using experimental data from a laboratory dynamometer.
30

A numerical investigation of hot spotting origin of ventilated disc brakes

Tang, Jinghan, Bryant, David, Qi, Hong Sheng January 2015 (has links)
no / Hot spots are high thermal gradients on the disc surface during brake events which can cause the undesired phenomena of thermal judder and drone. The origin of hot spotting has been presented by various theories such as Thermo elastic instability (TEI) and progressive waviness distortions (PWD). However, majority of the numerical models based on these theories mainly concentrated on solid disc rather than ventilated disc which is the most commonly used nowadays. According to the experimental work done by the authors, disc geometry factors such as vents and pins also have correlations with hot spot distribution; these phenomena are difficult to be predicted analytically. Thus a convenient 2D asymmetric finite element simulation has been performed in order to obtain the correlations observed in experiments. Further parameter studies investigated factors such as uneven initial temperature, vents, pins and pad length. The results have been correlated with the experimental data and demonstrate the contribution of geometric factors in the generation of hot spots and hot judder.

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