|
|
Energy analysis of motor pump units
Čenč, Samuel ; Štigler, Jaroslav (referee) ; Klas, Roman (advisor)
The bachelor thesis includes description and classification of hydraulic pump units. Individual types of hydraulic pumps, their area of use, advantages and disadvantages, and the method of regulating the output hydraulic parameters are described here. The thesis also includes a brief description of electric drives, whcich are used as a source of mechanical energy to drive hydraulic pumps. The purpose of the first part is to point out that there are two main ways of regulating the output hydraulic parameters. This is the regulation by changing the geometric volume of the hydraulic pump and the regulation by changing the speed of the electric motor. In the main part of the bachelor thesis attention is paid to individual conceptual solutions of hydraulic pump units. The essence of the regulation of hydraulic variables, the principle of operation of regulation in selected representatives regarding their dynamics is explained here. This is followed by experimental verification on real representatives of hydraulic pump units, which enables a deeper insight into the issue of hydraulic power units regulation and the course of electrical and hydraulic variables during the transient state.
|
|
|
Automated compression of neural network weights
Lorinc, Marián ; Sekanina, Lukáš (referee) ; Mrázek, Vojtěch (advisor)
Konvolučné neurónové siete (CNN) od svojho vynájdenia zrevolucionizovali spôsob, akým sa realizujú úlohy z odvetvia počítačového videnia. Vynález CNN viedol k zníženiu pamäťovej náročnosti, keďže váhy boli nahradené konvolučnými filtrami obsahujúcimi menej trénovateľných váh. Avšak, toto zníženie bolo dosiahnuté na úkor zvýšenia požiadaviek na výpočtový výkon, ktorý je naviazaný na výpočet konvolúcie. Táto práca skúma hypotézu, či je možné sa vyhnúť načítavaniu váh a miesto toho ich vypočítať, čím sa ušetrí energia. Na otestovanie tejto hypotézy bol vyvinutý nový algoritmus kompresie váh využívajúci Kartézske genetické programovanie. Tento algoritmus hľadá najoptimálnejšiu funkciu kompresie váh s cieľom zvýšiť energetickú účinnosť. Experimenty vykonané na architektúrach LeNet-5 a MobileNetV2 ukázali, že algoritmus dokáže efektívne znížiť spotrebu energie pri zachovaní vysokej presnosti modelu. Výsledky ukázali, že určité vrstvy je možné doplniť vypočítanými váhami, čo potvrdzuje potenciál pre energeticky efektívne neurónové siete.
|
|
|
Energy-saving building of a family house in Plumlov
Lakomý, Jan ; Vyhlídalová, Karolína (referee) ; Blasinski, Petr (advisor)
This bachelor´s thesis presents project documentation and building services of a passive house. Irregular but rectangular shape of object was slightly inspired by Frank Lloyd Wright´s simple and sharp concept of Usonian house. On first floor are situated mostly day rooms. Lounge, kitchen-dining room in social zone and mechanical room in work zone. Second floor is exclusively private zone with 3 bedrooms and bathroom. From hall is direct access to terrace. Struc-ture is composed by simple elements. Flat and mono-pitched roof are both designed from reinforced-concrete slabs, in ground, there are foundation strips. Whole wall structural system is designed from sand-lime blocks. In second half, the thesis concerns design and performance of build-ing services, employing an air source heat pump. Heat produced will be used for hot and heating water, stored in a cylinder. During summer spells, the reverse mode will produce cool water to provide cooling in thermally acti-vated ceiling slabs. Finally, a mechanical ventilation unit with heat recovery has been designed. Ducts are laid above soffit in both halls leading into eve-ry room. The house lays on a big site with one detention storage and two swales. With a photovoltaic array on the roof, the A-class rating of the house attests to its exceptional energy efficiency.
|
|
|
Utilization of absorption systems in the heating systems
Vidlák, David ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
Main goal of this work is familiarization with basic features of absorption heat pumps and it’s growing importance on the market. In the first part of the work there is a research for clarifying facts associated with such pumps. In the introduction there are descriptions of basic information from the field of heating industry and its connections to our systems. Next there is a brief analysis of price changes in electricity and heat in the last five years. Main part of the analytical section is a description of the used absorption system. Second part of the work is focused on the calculation of the absorption system itself. First there is calculated internal and external part of the device according to the parameters from GE Power s.r.o. After this step there are parametric studies based on changes of key parameters of the default device for a demonstration of the behavior of a heating pump. In the end of the work there is a integration of the unit into the heating cycle for variations including flue gas condenser and using a cooling water from the turbine condenser.
|
|
|
Development and Implementation of Energy Savings and Energy Management Methodology in an Industrial Enterprise
Dudarev, Ivan ; Demeč, Peter (referee) ; Suchánek, Rostislav (referee) ; Blecha, Petr (advisor)
V současné době se problematika energetických úspor dostává do popředí zájmu jak na úrovni jednotlivých podniků, tak i na úrovni celého státu. Často bývá příčinou sporů ve vědeckých kruzích i mezi odborníky z praxe. Lidstvo tradičně začalo využívat energii z minerálních přírodních zdrojů, které však ve srovnání s obnovitelnými zdroji energie mají omezení. Výzkum a implementace moderních technologií jsou ztíženy otázkou investic a časově omezeny. Proto se evropská strategie energetické bezpečnosti zaměřuje na energetickou účinnost, která je jedním z nejefektivnějších způsobů zlepšení bezpečnosti spotřeby energie. Velké společnosti a podniky jsou jedním z hlavních spotřebitelů energie. Proto je tato vědecká práce zaměřena na problematiku úspor energie a zlepšování energetické účinnosti podniku. Těžiště práce spočívá ve vytvoření a zavedení metodiky pro úsporu energie a managementu hospodaření s energií ve výrobním procesu automobilového podniku. Dále je pro účely této práce vytvořen a popsán způsob vizualizace spotřeby energie v prostředí virtuální reality
|
|
|
Improving energy efficiency in industry
Kovář, Štěpán ; Konečná, Eva (referee) ; Touš, Michal (advisor)
This Bachelor Thesis deals with the increase in energy efficiency in industry. The energy consumption is globally one of the cardinal topics. A significant part of the energy is consumed by industry, and therefore it is necessary to search for such measures to increase the energy efficiency of industrial processes. Current attitude aims at the installation of more effective machines, devices or the waste heat recovery. Especially the scientific community is concerned with the possibilities of process optimization from the point of settings and process integration, production planning, using software solutions. Both approaches are analysed in this work and based on that current state as well as the potential of the energy savings are evaluated.
|
|
|
Improving energy efficiency in industry
Kovář, Štěpán ; Vondra, Marek (referee) ; Touš, Michal (advisor)
This Bachelor Thesis deals with the increase in energy efficiency in industry. The energy consumption is globally one of the cardinal topics. A significant part of the energy is consumed by industry, and therefore it is necessary to search for such measures to increase the energy efficiency of industrial processes. Current attitude aims at the installation of more effective machines, devices or the waste heat recovery. This approach can lead to massive investment requirements of energy audits which means that the motivation of the enterprises to implement such audits is lowered. Especially the scientific community is concerned with the possibilities of process optimization from the point of settings and process integration, production planning, using software solutions. Both approaches are analysed from the potential of their use in this thesis.
|
|
|
Energy efficient hydraulic system design for force loading of vehicle drivetrain systems
Robenek, Vít ; Ožana, Otakar (referee) ; Houška, Pavel (advisor)
The thesis focuses on a hydraulic system design for a specific application of hydrostatic drive with regard to energy efficiency of proposed solution. Standard hydraulic and electronic components are used, mostly products of Bosch Rexroth. The aim of the thesis is to carry out a complex design from mechanic through hydraulic up to the electronic part of the system. After a short introduction in the beginning of the thesis is the particular application described and analyzed. Then the elemental principles of hydraulic devices and systems are explained. In the following part the actual solution is presented, which expands to several different alternatives. These alternatives are compared according to set criteria and the selected alternative is then further developed. At the end of the thesis, the outputs are evaluated and the direction of further possible improvements in the design is outlined.
|
|
|
Energy consumption analysis of water utilities
Bábíček, Michal ; Raclavský,, Jaroslav (referee) ; Ručka, Jan (advisor)
In the first part was an analysis of possible cost-saving measures to reduce energy consumption in the countries of Central and Eastern Europe and the former Soviet Union. Part of the work analyzing energy savings for water treatment plant Bzenecis divided into three parts. Part one deals with a brief description of the individual technological units. In the second part of the individual technological units analyzed in terms of savings already realized by the operator and also in terms of savings that operators shall submit for consideration and possible implementation. The lastthird part summarizes the findings in the second part of the analysis and alsooutlines possible new solutions that are applicable to all objects of the operator.
|
|
|
Energy efficiency of heat pumps
Bártů, Marek ; Hejčík, Jiří (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with the energy efficiency of heat pumps, especially efficiency of air/water system. In the this thesis is simply described the principle of the heat pump and function of each component. It shows the issues of determining the parameters of performance of the heat pump and also describes verification in according to applicable standards. The diploma thesis gives an analysis of determining the energetical efficiency and calculation of coefficient of performance, in other words, the seasonal heating coefficient of performance. Seasonal energy efficiency of selected samples of heat pumps for the heating season is designated for specific climatic conditions.
|
guest ::
