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Dissertations / Theses on the topic 'Water flow energy'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Short, Timothy David. "Induced flow water pumping for stand-alone renewable energy systems." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314323.

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2

Burris, Vickie Lien. "Hypolimnetic Aerators: Predicting Oxygen Transfer and Water Flow Rate." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/30936.

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The objective of this research was to characterize the performance of hypolimnetic aerators with respect to oxygen transfer and water flow rate to allow the development of two comprehensive process models. The oxygen transfer model is the first model that applies discrete-bubble principles to a hypolimnetic aerator, and the water flow rate model is the first that applies an energy balance to this particular type of lake aeration device. Both models use fundamental principles to predict hypolimnetic aerator performance, as opposed to empirical correlations. The models were verifie

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3

Bomminayuni, Sandeep Kumar. "Modelling tidal flow for assessment of hydro-kinetic energy and bathing water quality in coastal waters." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/70060/.

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In this study, a hydro-environmental numerical model is utilised to further demonstrate the applicability of computer models to predict tidal flow in coastal waters. In particular, high resolution model simulations are performed at two selected sites: the Ogeechee Estuary, USA to assess the hydro-kinetic energy potential near Rose Dhu Island, a small island in the estuary; and at Swansea Bay, UK to assess faecal coliform pollution levels in the bay. Model results from the Ogeechee Estuary simulations revealed that better representation of branching smaller creeks located inshore enhanced the m

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4

Hirst, Andrew Garwood. "Zooplankton production and energy flow : towards a biological model of Southampton water." Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242178.

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5

Ménard, Odette. "A solar climate control system using a water film flow to conserve energy in greenhouses /." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60540.

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One of the greatest problems encountered in greenhouses and buildings with large glazing is control of the internal atmosphere. The inherent characteristic of these buildings to act as solar collectors is to be used effectively for collecting and storing the excess solar energy. A new type of glazed roof, a Solar Climate Control roof system, was designed as a means to cool the interior environment of the greenhouses during the daytime and to heat during the nighttime or on overcast days.<br>A heat exchanger-storage system, using water as a thermal mass is included in the design of the Solar Cl

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6

Peraki, Maria. "Application Of Electrokinetics In Subsurface Energy Extraction." ScholarWorks @ UVM, 2017. http://scholarworks.uvm.edu/graddis/770.

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The world’s growing population results in increased energy needs that cannot yet be fully supported by the renewable sources of energy. These modern conditions and restraints have created the need to further research methods to enhance the recovery of resources previously unavailable due to technical and/or economic reasons and to reduce the environmental impacts of using fossil fuels. In this dissertation, applications of electrokinetic phenomena for the improvement of subsurface energy resource extraction are investigated using experimental and numerical tools. Electrodialysis is proposed as

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7

Levinsson, Johan. "Implementation of a Water Flow Sensor Node and Energy Evaluation of 2G Transmission Strategies." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-147052.

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In this report, the design choices made during the making of a water flow measuring sensor node are described and discussed to various extents. The node is to ultimately be deployed in South Sudan to monitor mini-water yards managed by the International Aid Services. A design using a hall effect water flow sensor, a microcontroller and a GSM modem is presented. Various lengths of SMS and HTTP messages are sent and the current signature they produce are compared to find out which transmission strategy is the most energy conservative. It is concluded that for a constant data volume, sending it i

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8

He, Miaomiao. "Analysis of underground thermal energy storage systems with ground water advection in subtropical regions." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38642761.

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He, Miaomiao, and 何苗苗. "Analysis of underground thermal energy storage systems with ground water advection in subtropical regions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38642761.

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10

Du, Plessis Gideon Edgar. "A variable water flow strategy for energy savings in large cooling systems / Gideon Edgar du Plessis." Thesis, North-West University, 2013. http://hdl.handle.net/10394/9509.

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Large cooling systems consume up to 25% of the total electricity used on deep level mines. These systems are integrated with the water reticulation system to provide chilled service water and cool ventilation air. Improving the energy efficiency of these large cooling systems is an important electrical demand-side management initiative. However, it is critical that the service delivery and system performance be maintained so as to not adversely affect productivity. A novel demand-side management strategy, based on variable water flow, was developed to improve the energy efficiency of large coo

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11

Gómez, Giraldo Evelio Andrés. "Observations of energy transfer mechanisms associated with internal waves /." Connect to this title, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0045.

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12

AbdelMeguid, Hossam Saadeldin. "Pressure, leakage and energy management in water distribution systems." Thesis, De Montfort University, 2011. http://hdl.handle.net/2086/4905.

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A fast and efficient method to calculate time schedules for internal and boundary PRVs and flow modulation curves has been developed and implemented. Both time and flow modulation can be applied to a single inlet DMA. The time modulation methodology is based on solving a nonlinear programming problem (NLP). In addition, Genetic Algorithms (GA) has been proposed and investigated to calculate the optimal coefficients of a second order relationship between the flow and the outlet pressure for a PRV to minimize the background leakage. The obtained curve can be subsequently implemented using a flow

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13

Barakoti, Sonia. "Diversity Analysis of Water Systems in the US." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo152545897931429.

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14

León, Celi Christian Fernando. "Optimisation of both energy use and pumping costs in water distribution networks with several water sources using the setpoint curve." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/107956.

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La optimización de los sistemas de bombeo se suele realizar a través de las curvas características de la red (asociadas con las curvas resistentes). Estas curvas están sujetas a la resistencia generada por el usuario en función de las necesidades de caudal y presión en cada punto de consumo. Dicha resistencia es muy variable y difícil de determinar lo que hace que el cálculo de las curvas sea poco práctico. El problema radica en que al no definirse adecuadamente las curvas resistentes, no se conocen las necesidades reales de caudal y presión de la red. Por lo tanto no se puede estimar el exces

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15

Alanazi, Mohammed Awwad. "Non-invasive Method to Measure Energy Flow Rate in a Pipe." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/103179.

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Current methods for measuring energy flow rate in a pipe use a variety of invasive sensors, including temperature sensors, turbine flow meters, and vortex shedding devices. These systems are costly to buy and install. A new approach that uses non-invasive sensors that are easy to install and less expensive has been developed. A thermal interrogation method using heat flux and temperature measurements is used. A transient thermal model, lumped capacitance method LCM, before and during activation of an external heater provides estimates of the fluid heat transfer coefficient h and fluid temperat

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16

Akinyemi, Oladapo S. "Similitude and Computational Fluid Dynamics (CFD) Simulation of the Model of a Hydropower System for Generating Clean Electricity from Water Flow." Thesis, University of Louisiana at Lafayette, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1592789.

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<p> This thesis presents a computational analysis of the performance of the model of a hydropower barge, consisting of 3 pairs of paddle wheels, in generating power from the flow of a river. The barge dimensions used in this research are one-thirtieth scale of the actual barge dimensions.</p><p> These new dimensions were used in the simulations to predict the power that can be generated, having carried out similitude between the scaled model and its full scale size. The dimensionless parameters employed in achieving similitude are Strouhal number, power coefficient, and pressure coefficient.

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17

Stamos, Dimitrios Georgios. "Experimental Analysis of the Interaction of Water Waves With Flexible Structures." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/27567.

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An experimental investigation of the interaction of water waves with flexible structures acting as breakwaters was carried out. Wave profiles, mapped out by water level measuring transducers, were studied to provide information on the performance of different breakwater models. A new signal analysis procedure for determining reflection coefficients based on wavelet theory was developed and compared to a conventional method. The reliability of using wavelet analysis to separate a partial standing wave into incident and reflected wave components was verified with a numerical example. It was also

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18

Pokhrel, Sajjan. "Computational Modeling of A Williams Cross Flow Turbine." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1515428122798392.

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19

Daza, Oscar Eduardo. "Simulation and Validation of Two-Component Flow in a Void Recirculation System." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/504.

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Nuclear power plants rely on the Emergency Core Cooling System (ECCS) to cool down the reactor core in case of an accident. Occasionally, air is entrained into the suction piping of ECCS causing voids that decrease pumping efficiency, and consequently damage the pumps. In an attempt to minimize the amount of voids entering the suction side of the pump in ECCS, a Void Recirculation System (VRS) experiment was conducted for a proof of concept purpose. While many studies have been oriented in studying two-component flow behavior in ECCS, none of them propose a solution to minimize air entrainm

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20

SPEDALETTI, SAMUELE. "Development and application of energy efficiency solutions in water supply systems (wsss)." Doctoral thesis, Università Politecnica delle Marche, 2021. http://hdl.handle.net/11566/289450.

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Gli interventi di efficienza energetica nei sistemi di approvvigionamento idrico possono portare a significativi vantaggi energetici, ambientali ed economici. In questa tesi, sono state studiate alcune strategie per prevedere le portate d'acqua e migliorare l'efficienza degli acquedotti. In particolare, è stato analizzato l’acquedotto italiano situato nel comune di Osimo, nelle Marche. La prima parte di questa tesi presenta una metodologia per la previsione delle portate nelle condotte di adduzione a gravità basata sui dati di consumo delle bollette elettriche, cosi da poter valutare il recupe

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21

BENAZZI, ELISABETTA. "Design of electron mediators for DSSC and Redox Flow Batteries and characterization of sensitized photoanodes for water splitting." Doctoral thesis, Università degli studi di Ferrara, 2018. http://hdl.handle.net/11392/2488159.

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22

Gomez, Giraldo Evelio Andres. "Observations of energy transfer mechanisms associated with internal waves." University of Western Australia. Centre for Water Research, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0045.

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[Truncated abstract] Internal waves redistribute energy and momentum in stratified lakes and constitute the path through which the energy that is introduced at the lake scale is cascaded down to the turbulent scales where mixing and dissipation take place. This research, based on intensive field data complemented with numerical simulations, covers several aspects of the energy flux path ranging from basin-scale waves with periods of several hours to high frequency waves with periods of few minutes. It was found that, at the basin-scale level, the horizontal shape of the lake at the level of th

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23

Ficicilar, Berker. "Electrocatalyst Development And Modeling Of Nonisothermal Two-phase Flow For Pem Fuel Cells." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613276/index.pdf.

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A macro-homogeneous, nonisothermal, two-phase, and steady state mathematical model is developed to investigate water and thermal management in polymer electrolyte membrane (PEM) fuel cells. An original two-phase energy balance approach is used to catch the thermal transport phenomena in cases when there is a signicant temperature dierence between the fuel cell temperature and the reactants inlet temperatures like during cold start-up. Model considers in depth electrode kinetics for both anode and cathode reactions. External and internal mass transfer resistances on fuel cell performance are ac

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24

Lu, Xijia. "An Applied Numerical Simulation of Entrained-Flow Coal Gasification with Improved Sub-models." ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1696.

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The United States holds the world's largest estimated reserves of coal and is also a net exporter of it. Coal gasification provides a cleaner way to utilize coal than directly burning it. Gasification is an incomplete oxidation process that converts various carbon-based feedstocks into clean synthetic gas (syngas), which can be used to produce electricity and mechanical power with significantly reduced emissions. Syngas can also be used as feedstock for making chemicals and various materials. A Computational Fluid Dynamics (CFD) scheme has been used to simulate the gasification process for man

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25

Bellman, Karen L. "Identification of Low Potential Onset of Concentration Polarization and Concentration Polarization Mitigation in Water Desalination Membranes." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1325109865.

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26

Arizcun, Zúñiga Paula María. "Ram pump hydraulic air test. Pressure conditions and flow measurements: Experimental research and case study." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-26897.

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This study consists of the development of a ram pump, which will allow the pumping of water without the need of external energy sources. It is considered an analysis of interest since, once it is finished; it can be applied in reality improving and facilitating different activities related to agriculture and health. Previous studies have been made related to the ram pump; however, in this case, it is intended to understand the system that has been built in the laboratory in order to find the best combination of parameters that will lead to obtain the highest possible efficiency. The study wil

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27

Garcia, Jose Daniel. "Characterization of greywater heat exchangers and the potential of implementation for energy savings." Thesis, KTH, Installations- och energisystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-191123.

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Buildings account for up to 32% of the total energy use in different countries. Directives from the European Union have pointed out the importance of increasing energy efficiency in buildings. New regulation in countries like Sweden establishes that new buildings should fulfill regulations of Nearly Zero Energy Buildings (NZEB), opening an opportunity for new technologies to achieve these goals. Almost 80-90% of the energy in domestic hot water use is wasted from different applications with almost no use and with a lot of potential energy to be recovered. The present work studied the character

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Rivinoja, Peter. "Migration problems of Atlantic salmon (Salmo salar L.) in flow regulated rivers /." Umeå : Dept. of Aquaculture, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/2005114.pdf.

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29

Herůfek, Marek. "Vývoj metody pro hodnocení retenčních vlastností vegetačních střech." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240252.

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This diploma thesis deals with the development of methods for evaluating retention features of green roofs. For the purpose of this thesis, a rainfall simulator was designed and various types of precipitation were examined. The thesis is divided into two main parts: a theoretical part and a practical part. In the theoretical part, the importance of water retention on green roofs is discussed. In addition, a physical theory related to this topic is included and various rainfall simulators used for scientific experiments in the Czech Republic and abroad are described. The practical part deals wi

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PICONE, Calogero. "RECUPERO ENERGETICO ALL’INTERNO DELLE RETI ACQUEDOTTISTICHE MEDIANTE MICROTURBINE IDRAULICHE." Doctoral thesis, Università degli Studi di Palermo, 2022. https://hdl.handle.net/10447/568782.

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31

Skoglund, Emil. "A NUMERICAL MODEL OF HEAT- AND MASS TRANSFER IN POLYMER ELECTROLYTE FUEL CELLS : A two-dimensional 1+1D approach to solve the steady-state temperature- and mass- distributions." Thesis, Mälardalens högskola, Framtidens energi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-55223.

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Methods of solving the steady state characteristics of a node matrix equation system over a polymer electrolyte fuel cell (PEFC) were evaluated. The most suitable method, referred to as the semi-implicit method, was set up in a MATLAB program. The model covers heat transfer due to thermal diffusion throughout the layers and due to thermal advection+diffusion in the gas channels. Included mass transport processes cover only transport of water vapor and consist of the same diffusion/advection schematics as the heat transfer processes. The mass transport processes are hence Fickian diffusion thro

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32

Oliveira, Cleomar Ferreira de. "Perda de carga em filtros de tela e de discos utilizados na irrigação localizada." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-22022006-140618/.

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Os sistemas de irrigação localizada requerem, obrigatoriamente sistemas de filtração para um tratamento mínimo da água. Os filtros são fundamentais à qualidade da água utilizada na agricultura irrigada, promovendo melhor desempenho dos sistemas de irrigação e seus componentes. Neste trabalho, estudou-se a perda de carga em função da vazão, em filtros de tela e de discos e determinou-se a bateria de filtros de mínimo custo anual total para diferentes vazões de projeto. Os ensaios foram realizados no laboratório de irrigação do Departamento de Engenharia Rural da Escola Superior de Agricultura

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33

Greku, Evgjenia, and Zhuohan Xie. "The Relationship of Weather with Electricity Prices: A Case Study of Albania." Thesis, Internationella Handelshögskolan, Jönköping University, IHH, Nationalekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-49050.

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Electricity markets may become more sensitive to weather conditions because of higher penetration of renewable energy sources and climatic changes. Albania is 100% reliant on hydropower for its domestic energy generation, making this country compelling to investigate as it is highly sensitive to changing weather conditions. We use an ARMA-GARCH model to investigate whether weather and economic factors had a relationship with monthly hydroelectricity prices in the Albanian Energy Market in the period 2013-2018. We find that electricity price is affected by variations in weather and is not utter

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34

Rydholm, Björn. "Omlöp vid småskaliga vattenkraftverk, hållbarhet för både verk och miljö? : Mätning av effektförluster orsakade av omlöpet vid Åby vattenkraftverk i Växjö kommun." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-63792.

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I Sverige finns cirka 2000 vattenkraftverk men endast 10 procent har någon form av omlöp eller annan lösning (Risinger, 2012). Nya, strängare regler håller nu på att införas. Sedan 2014 finns en gemensam strategi från Energimyndigheten och Havs- och vattenmyndigheten för åtgärder i svensk vattenkraft (Risinger, 2014). En godkänd fiskväg är ett av kraven.Särskilt den småskaliga vattenkraften (energitillförsel under 10 MWh enligt Risinger (2012)) drabbas. Deras intäkter står många gånger i proportion till energiproduktionen och därmed saknas ofta de ekonomiska förutsättningarna för en fiskväg. V

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Cap, Petr. "Energetické hodnocení systémů TZB." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225994.

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This Master’s thesis deals with the energy evaluation of existing buildings sports-recreational company complex in Brušperk. For this purpose provides a comparison of selected fuels as an energy source for the heating in terms of economy and their impact on the environment. In addition, provides an overview of existing legislation for elaboration of an energy audit. To complement shows the calculation of return on investment in solar panels on the roof of one of the objects. Calculation is based on the results of performed experimental measurement. Finally, the thesis presents a comparison of

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Rossi, Giuseppe [Verfasser], and M. [Akademischer Betreuer] Schöniger. "Drought risk for water supply systems based on low-flow regionalization / Giuseppe Rossi ; Betreuer: M. Schöniger." Braunschweig : Technische Universität Braunschweig, 2011. http://d-nb.info/1175824488/34.

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Zein, Waël. "Etude d'un capteur absorbant l'energie solaire par le fluide caloporteur : application au chauffage des piscines de plein-air." Poitiers, 1986. http://www.theses.fr/1986POIT2289.

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Modelisation des transferts radiatifs pour les differents composants du capteur. Resolution numerique des equations permettant d'obtenir les lois d'evolution des performances du capteur en fonction de ces caracteristiques geometriques, des conditions radiatives et meteorologiques d'un site. Verification experimentale a l'aide d'un simulateur de rayonnement. Application envisagee, au chauffage d'une piscine en plein-air. Optimisation des conditions de fonctionnement et analyse economique du systeme de chauffage

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Pajgrt, Michal. "Programové vybavení pro komunikaci a nastavení jednotky pro sběr dat JSD600." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2007. http://www.nusl.cz/ntk/nusl-412780.

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This diploma thesis describes a JSD600 unit intended for mathematical processing, measuring and data recording. The JSD600 unit is highly intended for industrial measuring of water steam energy delivery.First part of the work focuses on basics of the JSD600 unit detailing and describing main structures and principles for relevant data storing.Next part summarizes some basic facts and knowledge from the area of industrial liquid flow, energy measuring and describes water steam states. All these points within this range are needed for dilemma understanding.Last task deals with complete list of c

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Roose, Ilka [Verfasser]. "Flows of Chilean Water Governance : Social Innovations in Defiance of Mistrust and Fragmented Institutions / Ilka Roose." Baden-Baden : Nomos Verlagsgesellschaft mbH & Co. KG, 2020. http://d-nb.info/1220161993/34.

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Svoboda, Lukáš. "Studie snížení energetické náročnosti bytového domu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226693.

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The goal of the thesis is firstly to get all the information about the initial state of solved block of flats, which is located on the street Merhautova 76/954 in Brno – Černá pole, in terms of constructions, energy consumption and initial state of heating system. In the second part of the thesis, where are discussed the possibilities of reduction of energy consumption, variant drafts of reduction of energy consumption and their financial costs and the choice of optimal variant. Third part deals with assement of solved block of flats in terms of sustainable built environment by using tool to r

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Espinosa, Gutierrez Gabriela [Verfasser], and Ralf [Akademischer Betreuer] Otterpohl. "Material flow analysis of the urban water system in Tepic Mexico: Integral evaluation and improvement options / Gabriela Espinosa Gutierrez ; Betreuer: Ralf Otterpohl." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2016. http://d-nb.info/1121104843/34.

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42

Ricchiuto, Mario. "Construction and analysis of compact residual discretizations for conservation laws on unstructured meshes." Doctoral thesis, Universite Libre de Bruxelles, 2005. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/211035.

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This thesis presents the construction, the analysis and the verication of compact residual discretizations for the solution of conservation laws on unstructured meshes. <p>The schemes considered belong to the class of residual distribution (RD) or fluctuation splitting (FS) schemes. <p>The methodology presented relies on three main elements: design of compact linear first-order stable schemes for linear hyperbolic PDEs, a positivity preserving procedure mapping stable first-order linear schemes onto nonlinear second-order schemes with non-oscillatory shock capturing capabilities, and a conserv

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Bossa, Yaovi Aymar [Verfasser]. "Multi-scale modeling of sediment and nutrient flow dynamics in the Oueme catchment (Benin) : towards an assessment of global change effects on soil degradation and water quality / Yaovi Aymar Bossa." Bonn : Universitäts- und Landesbibliothek Bonn, 2012. http://d-nb.info/1044082437/34.

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Kužel, Kristián. "Návrh systému řízení a diagnostiky ohřevu vody s využitím solární energie." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230895.

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This thesis deals with problems related to heating of hot service water. It focuses on solar water heating, describes individual types of solar panels and summarizes the existing information about solar water heating. It demonstrates actual problems of solar system solution on a specific example of a two-generation family house, where it analyses possibilities of diagnostics and control of such system. It also deals with suggestions of possible expansion of the current solar system.

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Matta, Elena [Verfasser], Reinhard [Akademischer Betreuer] Hinkelmann, Günter [Akademischer Betreuer] Gunkel, et al. "Multi-dimensional flow and transport modeling of a surface water body in a semi-arid area : The case of the Icó-Mandantes Bay, Northeast Brazil / Elena Matta ; Gutachter: Reinhard Hinkelmann, Günter Gunkel, Gunnar Nützmann, Michele La Rocca ; Reinhard Hinkelmann, Günter Gunkel." Berlin : Technische Universität Berlin, 2018. http://d-nb.info/1162189681/34.

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Shrestha, Aashish. "Modeling Impact of Hydraulic Fracturing and Climate Change on Stream Low Flows: A Case Study of Muskingum Watershed in Eastern Ohio." Youngstown State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1420797464.

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Nehmé, Haissam. "Étude de l'ébullition dans un canal rectangulaire, inclinable, de grand diamètre hydraulique." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0027.

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Motive par les besoins en etudes de surete pour les reacteurs a eau pressurisee (rep), ce travail concerne l'evacuation de la puissance residuelle du corium (materiaux fondus) apres la fusion du coeur d'un rep. Une des solutions de refroidissement consiste a noyer l'exterieur de la cuve. La gamme de parametres du probleme (flux de quelques mw/m#2, grande geometrie, pression de 0. 1 a 0. 5 mpa, inclinaison variable) est eloignee des cas classiques explores. Une analyse bibliographique des modeles d'ebullition en canal est fournie. Peu de correlations sont valables dans la gamme de parametres du

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Hauck, Matthieu. "Optimisation de l'architecture et de la commande de la chaîne électrique d'une hydrolienne fluviale : conception et réalisation." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00732840.

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Le but de cette thèse est le développement et l'optimisation de la chaine électrique d'une hydrolienne fluviale. L'approche est d'abord traitée en simulation pour ensuite finir par la conception et la mise au point d'un prototype. La partie simulation concerne la modélisation des ensembles turbines, génératrices et électronique de puissance mais aussi le développement des diverses lois de commandes. Ces commandes peuvent intervenir à différents niveaux du contrôle jusqu'à la supervision complète du système, permettant de gérer des défauts, des algorithmes de MPPT (extraction maximale de puissa

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Duplat, Françoise. "Refroidissement et dispersion du corium lors de sa chute dans l'eau pendant un accident sévère de réacteur nucléaire à eau pressurisée : description des interactions mécaniques et thermiques en écoulement triphasique lors de la dispersion de sphères solides froides ou chaudes dans un bain liquide." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0106.

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Dans le cadre des etudes de surete nucleaire sur les interactions corium - eau, nous considerons la phase de refroidissement et de dispersion des fragments de corium dans un bain liquide. Devant la complexite des ecoulements rencontres et le couplage des interactions mecaniques et thermiques, la validation des modeles et la prediction de l'evolution du systeme etudie passe par l'utilisation d'un logiciel de calcul de thermohydraulique (mc3d). Une etude bibliographique montre que l'approche classique de la modelisation des ecoulements a trois phases repose sur l'adaptation des lois constitutive

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Šmihula, Michal. "Kulturně společenské centrum u brněnské přehrady - architektonická studie objektů pro kulturně společenské i sportovní akce." Master's thesis, Vysoké učení technické v Brně. Fakulta architektury, 2010. http://www.nusl.cz/ntk/nusl-215678.

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The design of cultural centre is situated in part Kozia Hôrka( well-known city swimming pool), in its advantage takes natural scenery and calm atmosphere of place. Into action of performance brings a message in form of body of reservoir, function of centre is divided into small parts placed in area Kozia Hôrka. Orientation of objects comes mainly from local natural ispirations. Complex is multifunctional in concept, counts with several sorts of culture - sports events. Whereby the main function of swimming pool is preserved and added for higher comfort of inhabitants. Architecture of objects c

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