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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.
1

Design and simulation of a control continuum for tetherless underwater vehicles

LeBlanc, Graham 24 August 2011 (has links)
There exists a need for a new class of underwater vehicle that can perform both close control tasks, as well as long-range exploration, without manual reconfiguration. A tetherless underwater vehicle (TUV) with acoustic communications to an operator station has potential to fulfill this need, while also removing much of the operating costs associated with tether management. The problem with TUVs is the limited communications bandwidth and time lag increasing with range from the transmitter. This thesis introduces a new class of controller for TUV vehicles that isolates the operator from the time-varying delay. This isolation is achieved through the formation of a continuum of control comprised of existing control paradigms, such as predictive and autonomous control. A smooth evolution through the continuum is formulated based on the time delay. The resulting controller permits operator close control for extended ranges without manual reconfiguration of the vehicle or controller.
2

Optimalizace vytápění bytového domu / Optimization of Flat House Heating

Fodor, Ján January 2017 (has links)
This diploma thesis deals with the supply of heat in a particular block of flats in Brno. It deals with supply for heating and for hot water heating. The introduction gives information about the considerated building and also generally, but especially with regard to the current situation with consumption and heat supply. Subsequently, the thesis describes the individual possibilities of obtaining heat. There are mentioned classical heat sources as gas boilers, but also less commonly used as co-generating units or solar collectors. Furthermore, the work is calculating from the technical and economic point of view for heating options chosen by the investor. Finally, the work compares the options from viewpoint of benefits, budgets and returns of possible investments.
3

Optimalizace provozu solárního systému určeného k ohřevu TUV školní jídelny / Optimization of the solar system designed for DHW school canteens heating

Doskočil, Filip January 2016 (has links)
Masters’s thesis describes the use of solar energy for solar thermal systems used for domestic hot water heating. It is about the size of the incident solar radiation on Earth. Distributes various types of solar collectors for water heating. It deals with the monitoring, remote management of this system and the design of optimal control used in this area.
4

Kvantifikace energetických ztrát fototermického systému ohřevu TUV při napájení fotovoltaikou / Quantification of energy loss in photothermic system of hot water supply in photovoltaics

Havlíček, Lukáš January 2014 (has links)
This masters’s thesis is about quantify of energy losses in the solar system for heating of hot water by energy from photovoltaics. During the April in year 2014 will be realized a practical data collection on the real system. Then, based on these measurements, calculations will be performed.
5

Optimalizace kombinovaného systému ohřevu TUV / Optimalization of the water heating system

Lebeda, Ladislav January 2016 (has links)
This thesis is aimed to enable energy optimization of combined water heating system. The first part deals with the assessment of the general view of thermal solar systems with autonomic power from photovoltaics and description of a particular solar system for energy optimization. Then there is chosen the control system conception based on single-board computer Raspberry Pi, which is complemented by auxiliary measuring and controlling circuit. In the following chapters is described design and implementation of software for control system including web interface. The remote monitoring and controlling of solar heating system is the main purpose of web interface.
6

Optimalizace provozu solárního systému určeného k ohřevu TUV školní jídelny / Optimization of the solar system designed for DHW school canteens heating

Doskočil, Filip January 2016 (has links)
Masters’s thesis describes the use of solar energy for solar thermal systems used for domestic hot water heating. It is about the size of the incident solar radiation on Earth. Distributes various types of solar collectors for water heating. It deals with the monitoring, remote management of this system and the design of optimal control used in this area.
7

Moderní energie a snížení energetické náročnosti budov / Modern energy and decreasing the energy intensiveness of buildings

Kučera, Miroslav January 2009 (has links)
This diploma thesis deals with possible energy-savings in the municipal buildings of Spytihněv. Moreover, it discusses the possible improvements of heating features and making use of renewable resources. This is meant to be achieved by a wrapper which is less demanding on energy consumption than those which have been used until now. Attention is also paid to a more efficient system of energy distribution. Both energetic and financial points of view are taken into consideration. The thesis consists of a few parts. Introduction, the first part, deals with renewable resources issues on a theoretical level. The second part is divided according to each individual analysed premise/building. At this point energy-saving proposal, choice of a heating system, a heating pump, a solar collector as well as energy-saving and financial calculation are included.
8

Analýza tepelné spotřeby objektu / Analysis of Heat Energy Consumption of Buildings

Houzar, Tomáš January 2017 (has links)
Master’s thesis is focused on analysis of thermal consumption in the buiding. This work describes current state of family house and possible suggestions for heating and water heating. Part of solution is created program, which supposed to serve as universal calculation program for design and economic evaluation of suggested solar systém and allows a comparison between commonly used sources for heating and water heating.
9

Optické kabeláže - srovnání / Optical cabling - a comparison

Zelinková, Vlasta January 2012 (has links)
The thesis is focused on an analysis of mounting and cable laying fiber optic lines. The first chapter includes an analysis is made comparing parameters fiber and copper cabling, mainly in terms of access networks. This part specifies the various transmission media and access networks that are operated on them. Attention is focused on the transmission rate and its possible impact, provided the capacity and other important values. This section also demands site maintenance, service, or any failure on the routes of these networks. With this goal in the second chapter was created several designs networks that provide insight into possible solutions to the situation for emerging networks, and for upgrading existing networks, using both management and elements of optical and copper, or combinations thereof. Provide information from expert sources and verified directs the work of the future and to clarify further the eventual development of individual technologies. Most other space and offers the potential of optical technology, nature, and therefore the third chapter is fully devoted to only the transmission medium. At the beginning of this section is a theoretical analysis of possible ways of cable laying fiber optic cabling with a comparison of advantages and disadvantages. The most stable is an underground installation, which is costly in standard cases. As a result of these factors proved to be a possible solution using the underground installation of water pipeline shutdown. Therefore, the optical path designed, organized and implemented laying of fiber optic cable. By completing the inspection measurement and evaluation of the cost compared with other ways of installing fiber optic cable.
10

Akumulační nádrž tepelného čerpadla / Heat storage tank for heat pumps

Daněk, Tomáš January 2013 (has links)
The goal is to design a storage tank to the heat pumps air to water. The first part describes how a heat pump works and why it is advantageous to use the tank. Another section focuses on ways to accumulation of heat. Established a program that simulates the behavior of the heat pump system with storage tank, described how this program works and is designed tank size for a given heat pump. The last chapters deal with the calculation of minimum area of heat flow exchanger and the proposal inlet valve for improving the thermal stratification of the tank.

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