• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 704
  • 351
  • 266
  • 228
  • 85
  • 59
  • 10
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 1719
  • 1055
  • 321
  • 295
  • 214
  • 196
  • 192
  • 192
  • 186
  • 170
  • 148
  • 133
  • 126
  • 126
  • 125
  • 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.
811

Návrh nosné konstrukce pro fotovoltaické sluneční články / Design of board for solar fotovoltaic cells

Kulhánek, Martin January 2008 (has links)
The purpose of this dissertation is to discuss the engineering design of the supporting structure for solar photovoltaic panels with a total area of 200 metres square. The supporting structure is intended for implementation as part of a solar power station. The preamble of the dissertation examines photovoltaic power stations, their types, advantages and disadvantages. The focus of the second part is directed toward the project of constructing the supporting structure and it also deals with the tasks of attaching the photovoltaic panels and putting the panel’s supporting structure in place. This section will also propose methods of continuously monitoring both the panel and its support-structure once they have been constructed and brought into operation. The purpose of part three is to perform the calculations concerning the entire structure’s required load-bearing properties through the use of the Final Element Method in the program “ANSYS 11.0”. The conclusion of this dissertation is devoted to the evaluation and economic analysis of the construction.
812

Analýza provozních dat ze studentského centra FIT VUT v Brně / Analysis of operating data from the student centre at the Faculty of Information Technologies

Suchá, Petra January 2008 (has links)
This diploma thesis is dedicated to the analysis of operating data from the Brewery, a former industrial building, which has been reconstructed to a student centre of the Faculty of Information Technologies. The main goal of the work was to analyze the performance of the building and to evaluate energy savings originating from the energy saving measures that were applied during the retrofit.. The first part of the thesis focuses on the particular energy saving measures and the predictions of energy savings. The second part presents the results of the monitoring of the building and the HVAC systems during the first year of the operation of the Brewery.
813

Simulátor pro ověření funkce bezpečnostních pásů / Simulator for check of seat belts function

Neuwirth, Zdeněk January 2009 (has links)
Thesis is oriented on project construction universal apparatus for introduction and research effects deceleration and impact with possibility setting initial velocity. Basic application proposed test station is crash simulation for diagnostic safety belts. At first there're in work presented physical value that describe action in progress at impact, further safety belts, their testing and test . Considerable volume of work is devoted to project actuation, system obstruction kinetic energy and basic construction. Subsequently is presented proposed construction and performed strenght calculation. In the end there are summarized basic characteristics proposed construction, short financial opinion, process of installation and safety rules for using this equipment.
814

Optimalizace procesu soustružení zohledňující mechanické a vykonove vlastnosti stroje / Optimization of turning regarding mechanical and power machine characteristics

Holík, David January 2011 (has links)
Manufacturing companies are increasingly compelled to optimize their machining processes for various reasons, such as improved cost effectiveness, tighter regulations and marketing advantages. Increasing energy costs in particular shift the reduction of energy consumption and the cost effectiveness of the production method more into the focus of corporate strategy. This is done by using the example of a turning process for the production of a tapered roller bearing. The main goal of this thesis can be identified as a detailed investigation of the energy consumption of certain turning machine. Further, different optimization approaches regarding energy efficiency are introduced taking under consideration tooling costs and machining time.
815

Dvousouřadnicový NC stůl pro frézovací centra s hydraulickým upínačem / The two-coordinate numerical controlled table for milling center with hydraulic clamp

Nešpor, Vít January 2013 (has links)
This thesis deals with theoretical design of NC rotary tilting table for Kovosvit MAS milling machine MCV 754 - QUICK. In the beginning of this paper is made a research with focus to rotary tilting tables, paletizing technologies and rotary suppliers of energy. The main part concerns with loading analysis of rotary tilting table, proposal of motion drives, bearings and the frame of desired machine. For motion drive of each axis is chosen torque motor. Constructional solution of pressed air supply to the middle boring of face plate is realized by a rotary union. The next point of solution is arrangement of moving supply electrical and pneumatic energy to the frame of tilting axis. The last part is concerned to proposal of realizing of changing tchnological pallets by the Zero-point systems. In the end the economical analysis is made.
816

Návrh malého jaderného reaktoru pro účely dodávek tepla / Concept of a small nuclear reactor for the heat supply purposes

Bobčík, Marek January 2013 (has links)
The objective of this diploma thesis is to assess the suitability of a small nuclear reactor for the purpose of heat supply in small towns and cities. First, all the heat demands of these towns and cities are analysed. Then, a small nuclear reactor to serve these needs is designed and a computational model for burn-up fuel is created. The thesis aims to propose a design of a new heat exchanger. Economic and environmental criteria are taken into account as well and including safety measures. The outcome of this thesis is an evaluation of the whole concept with respect to potential future implementation.
817

Tvorba simulačního modelu obráběcího stroje pro určení energetické spotřeby / Design of a simulation model of the machine tool for determining the energy consumption

Vespalec, Tomáš January 2015 (has links)
This diploma thesis deals with a design of the simulation model of a CNC machine tool for determining the energy consumption. It describes a design of the mechanical and the electrical model of the CNC machine and a design of the energy consumption algorithm. The result of that thesis is a size of the consummated energy during a machining process.
818

Stanovení účinnosti rekuperačního hydrostatického pohonu / Determination of efficiency of hydraulic drive with recuperation

Kobza, Michal January 2014 (has links)
In the first part of the thesis is determined efficacy criterion for the individual operating modes of the experimental stand with energy recovery and subsequently are evaluated the records of individual measurements. Energy savings are calculated with using energy recovery. The second part describes the process of digitizing relative fuel consumption map of the engine. Results are confronted with a real application engine in the road roller Ammann AP 240 H. In addition, the master thesis describes the creation of hydrostatic converter block in the program MATLAB/Simulink 2012b. Creating block can be used in the development of simulation models.
819

Analýza vlivu zateplení na cenu bytového domu v Třebíči / Analysis of the impact on the price of insulation of residential building in Trebic

Procházka, Pavel January 2013 (has links)
A quantification of costs of an insulation on multi-storey buildings and determination of returns on investments in the insulation due to cost savings for heating energy is the subject of this thesis. Analysis of the current statuses of prefabricated houses in the Czech Republic, possibilities of insulating, and characterization of thermal insulation materials are involved in the thesis. It is also included a description of the method for determining the energy performance of the building. The core of this work is the statistical comparison of the prices of two residential buildings in Trebic using the bid prices. These residential buildings, which differ by the number of floors, are assessed concerning impacts of the insulation works. There is also calculated the amount of saved energy for heating which is further used for determination of return on investments into complete building insulation.
820

Analýza vlivu stavebních úprav na obvyklou cenu bytové jednotky ve Velkém Meziříčí / Analysis of the Impact of Construction Works on the Market Value of a Housing Unit in Velké Meziříčí

Trnka, Vojtěch January 2014 (has links)
This diploma thesis analyzes the impact of construction work on the usual price of the housing units in Velké Meziříčí. In the theoretical part the development of prefabricated buildings and the current situation are described. I also gave a description of different types of insulation where the method of building insulation ETICS and the energy intensity of buildings are given in details. The requirements for thermal building protection, their calculation and the basic methods of property evaluation are mentioned in this part as well. In the practical part I dealt with the price of selected units before and after reconstruction. I used several methods – the direct comparison, the comparative method according to the regulation and the yield value. Three variants of construction work are designed and they are evaluated from the point of energy saving for heating. The goal this thesis is to specify whether the price of the units will increase due to construction work related to the insulation.

Page generated in 0.0388 seconds