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Heat pump with accumalation
Kohout, Jiří ; Lisý, Martin (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with the assessment of SCOP of the heat pump installed in the selected building and with the determination of optimal size of accumulation which should help to heat pump work with higher temperature and higher SCOP. Annual savings of operating cost and return of investment from installation of accumulation tank are evaluated in this thesis. In the research part of this thesis are described the main components of heat pump, sources of low-potential heat and types of heat pump.
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Method for Energy Efficience Simulation of Machine Tools in Design Stage
Tůma, Jiří ; Demeč, Peter (referee) ; Suchánek, Rostislav (referee) ; Blecha, Petr (advisor)
Ph.D. thesis is focused on the design of the method for simulation of energy demands of machine tool in operation at the stage of its development. Proposed method is developer on the basis of literature search in science and in industry. The method itself is composed of five related steps, that must be realised in the proper order in order to create a relevant energy profile of a machine tool. The output from the method are simulated data providing a course of comsumed energy and required power which are time dependent. Output data are obtained on the basis of the drive system simulation of machine tool through G-code, that is interpreted for simulation by the compiler into the matrix. It contains data necessary for controlling of machine tool, such as the required end points of the tool and required feed rates, to which is assigned a time value. G-code is partially time parametrized. It is then followed by full time parametrization through a of mathematical model of drive mechanisms and due the synergy of software for drive mechanisms control (Matlab Simulink) and software for physical simulation (MSC Adams) is processed into output data. As an input parameter figures also coefficient used as multiplier of the normal force of driving mechanisms, which is a function of feed rate. This loss function is obtained experimantally. In the context of Ph.D. thesis were conducted two experiments, used to verify the developed method. For each experiment is proceeded according to estabilished method and it is included a comparsion of simulation and measured data for various operating modes. The proposed method, described in the Ph.D. thesis, allows designers to summarize the energy demand of the proposed machine before its production. When correctly interpreted, the results of the method can serve as a basis for improving the energy profile and thereby increasing the energy efficiency of the machine tool.
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Potential of energy production from waste
Putna, Ondřej ; Ferdan, Tomáš (referee) ; Touš, Michal (advisor)
The main topic of the bachelor thesis is creating energy from the incineration of waste. In the first part, the current situation of waste management of the Czech Republic and other states of the Europian Union is outlined. Then the thesis is focused on waste incineration in waste-to-energy plants and various approaches of energy efficiency evaluation are described. In the second part, energy efficiency with various modes of thermal and electrical energy production is analyzed, using the model of WtE plant. In conclusion, obtained data of energy efficiencies are compared with conventional energy sources.
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Absorption cycle in the heating industry
Pleva, Ondřej ; Fiedler, Jan (referee) ; Pospíšil, Jiří (advisor)
Goal of this thesis is to introduce technology of absorption heat pumps in various modifications. Technical design draft is created for chosen modification (single stage unit water-LiBr) and based on given parameters calculated in computing software EES (engineering equation solver) and process is explained step-by-step. Following part of thesis contains reference design draft of heat plant and this design is used to demonstrate several different options of applying absorption heat pump including version capable of providing also cooling. Those options are compared with each other from technological and economical stand point.
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Energy labels of electrical appliances
Diblík, Jan ; Bok, Jaromír (referee) ; Drápela, Jiří (advisor)
In my bachelor's thesis I engaged in energy cards of electrical appliences. I acted and controled for Law number 406/2000Collection, for manage energy what frame preparation Czech Republic walk in European Union introduce in harmony with european legislature. This law and legislature in conjunction with law signify charge for all producer alectical appliences mention energy cards in the all appliences. I mention for example energy card. On the energy card are appliences distribute for seven energy class according to class A is the most of economy class and class G is least economy class. On the energy card mention next particulars, for example name or business symbol of producer, identity symbol of model applience use of producer or impporter and next. In my thesis I engaged progresses for determine energy class electrical appliences formation universal progresses for determine energy class appliences, define basic universal qualities and parameters. There are pieces of knowledge is possible take advantage of already non-cards appliences, determine energy classes divided for two groups. First group energy class is enumerace for consuption electric energy and second group energy class is enumerace with regard to next quantity. It was extract wrote next important and universal date on energy card. All pieces of knowledge took advantage of application energy card on non-card appliences factual home bakery of bred. At this home bakery of bred chaose reference conditions at what measured electrical consuption. I was set up energy class in what Iam put into its this consuption. For objektive was set up energy card this home bakery of bred.
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Gas heat pump
Kulich, Marek ; Charvát, Pavel (referee) ; Hejčík, Jiří (advisor)
This bachelor thesis, in the theoretical section, explains the principle of functionality of heat pumps, their efficiency and distribution by type of circulation and heat source. The next part is devoted to technical research of comercially available gas heat pumps that are, in the calculation part, compared with electrical heat pump and with gas condensing boiler according to their energy efficiency.
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ENERGY MANAGEMENT STRATEGY FOR SUSTAINABLE REGIONAL DEVELOPMENT
Hrubý, Martin ; Korytárová, Jana (referee) ; Kabrhel,, Michal (referee) ; Petráš,, Dušan (referee) ; Hirš, Jiří (advisor)
Energy Management strategy for sustainable regional development has been selected as the topic of my research due to the fact that energy demand alongside with energy dependency have been continuously growing from a long term perspective. Sustainable development is defined by three imperatives – energy efficiency, ecology and security. Review of the current state and analysis of historical trends in Energetics at global and regional level are covered in this research. Results of the Multi-Criteria Decision Analysis introduce a set of implications and recommendations for Energy Management strategy in the Czech Republic.
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Efficiency of the energy use of biomass
Szelecky, Zsolt ; Brázdil, Marian (referee) ; Baláš, Marek (advisor)
This final thesis deals with the theme of energetic usage of biomass and its energy efficiency. In the first part the term „biomass“ is explained and classified into categories. The main part of this work deals with technology converts of raw biomass into valuable energy products. The final section is closely connected with the previous part, where the emphasis is placed on energetic effiency of abovementioned technology converts.
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Detached house in Lhotka u Ostravy
Bartek, Čeněk ; Jelínková, Barbora (referee) ; Ostrý, Milan (advisor)
Bachelor´s thesis is focused on new detached house in Lhotka u Ostravy. The detached house is designed as a seperate double floored house with no basement with regular rectangular shape and gable roof. The house is designed as a brick building of sand-lime blocks with contact thermal insulation system of mineral wool. The supporting structure of the roof are wooden trusses and roofing is fibre cement and colour of slate. The ceiling in the building is a monolithic reinforced concrete. Foundation walls are made of blocks of shuttering. The facade of the building is white in combination with tiles of imitation brickwork. Beside the house is located the garage for two cars with a store. The building is designed for family of four inhabitants and the house is determined for permanent housing. The detached house is designed with energy efficiency and low demand for heating. The detached house is designed on plot no. 175/7 in Lhotka u Ostravy. The plot borders with streets Televizní and Na Palouku. Access road to the house is from street Na Palouku. This work includes the preparation and study work, situational design, architectural and structural design, structural design solutions, fire safety solutions, essay of building physics calculations and engineering schemes of technical equipment.
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