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Design of a heat exchanger for the recovery of waste heat from a sewerage system
Novák, Filip ; Baláš, Marek (referee) ; Toman, Filip (advisor)
The theoretical part of bachelor thesis was focused on heat exchangers and wastewater heat recovery systems. In theoretical part, everyday applications and practical notes of heat exchangers and recovery systems were emphasized. In practical part of thesis, heat calculation of double tube heat exchanger was carried out for operation in winter months. Using --NTU method, heat output of exchanger was recalculated for each month separately, from which, the total heat recovered in the course of year was calculated. Last part of the thesis was focused on a economical aspect of the heat exchanger (manufacturing and maintenance costs). This amount of money was compared with cost of water heating using heat pump, gas boiler and automatical wood pellet boiler.
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RDF Grate Biomass Boiler
Hort, Lukáš ; Křemínský, Pavel (referee) ; Lisý, Martin (advisor)
The diploma thesis deals with the design of a hot water boiler for combustion of RDF, where the output is water with parameters of 150 °C and 16 bar. In the beginning of the thesis, preparatory calculations are presented, i.e. stoichiometry and determination of thermal efficiency using the indirect method. The main part of the work consists of the design of heat exchange surfaces and their thermal calculation. Finally, the calculation is extended to include hydraulic and aerodynamic pressure losses. There is a drawing diagram of the designed device in the appendix of the work.
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Optimization of the cleaning of the heating surfaces on the coal boiler K1 in Plzeňská teplárenská
Kostrhounová, Petra ; Tomáš, Zdeněk (referee) ; Baláš, Marek (advisor)
This master’s thesis deals with the assessment of cleaning of heat transfer surfaces of a coal-fired steam boiler. The first part is devoted to the description of the knowledge about the formation of deposits, the deposits influence on the operation of the plant and cleaning mechanisms. Then, basic information on the operation, design and method of removal of deposits of the K1 boiler is summarised. Based on this knowledge, operating data from four summer months of boiler operation are analysed to determine the fouling condition of the boiler surfaces and over fifty graphs are produced showing the evolution of selected operating values between each cleaning cycle of the convective and plate superheater as well as air preheater. Subsequently, a parametric model of the K1 boiler at 60 % output is created in PPSD, which allows a more detailed analysis of the boiler operating characteristics and is used for a more thorough interpretation of the operating data. In addition, two models for higher boiler outputs and three theoretical models of operating conditions with different levels of surface fouling were developed. To verify the accuracy of the developed model, a calculation of heat transfer through the outlet superheater is performed. Finally, the calculation of steam consumption for sootblowing is performed.
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Condenser design of a nuclear power plant
Hejduk, Michal ; Šnajdárek, Ladislav (referee) ; Milčák, Pavel (advisor)
The topic of this master´s thesis is the design of the steam generator for a nuclear power plant with VVER 440 reactor. The first part of this thesis describes a brief history of nuclear research, which is followed by an overview of nuclear reactors used now. The next part deals the types of steam the types of steam generators used today with their basic elements and design recommendations. The last and final part is the design of a steam generator for nuclear power plant with a VVER 440 reactor. Above all, is the thermal calculation of the steam generator and behaviour of steam generator depending on the reactor power. The design solution of steam generator and its strength calculation. The last part of the steam generator calculation the pressure loss of the steam generator is investigated.
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Heat exchanger conversion for new media
Guliš, Jan ; Toman, Filip (referee) ; Baláš, Marek (advisor)
This thesis deals with calculation of the existing tube heat exchanger conversion for new media air-water. The theoretical part is devoted to the introduction to the topic of heat exchangers and deals with their basic divisions including descriptions of various types of design. The heat and hydraulic calculation for usage of new media is processed in the second part. The conclusion of the thesis is the result evaluation and proposal of the heat exchanger modifications which could lead to higher efficiency. The thesis includes an appendix with technical documentation of heat exchanger.
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Design of the steam generator for a nuclear power plant
Hort, Lukáš ; Špiláček, Michal (referee) ; Milčák, Pavel (advisor)
This bachelor's thesis is about the design of a steam generator for a nuclear power plant. The opening chapters are purely theoretical, with the first one covering nuclear energy as such, the next one continuing with the search for different types of parogenerators and their subsequent comparison. This is followed by a calculation section dealing with the thermal calculation of the parogenerator for the given parameters.
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Modular Horizontal Heat Recovery Steam Generator
Primes, Alois ; Nantl, Radomír (referee) ; Lisý, Martin (advisor)
This thesis deals with the design of a Heat Recovery Steam Generator (HRSG). Theintroductory part is devoted to a brief description of the boiler, the specified parametersand the compilation of the temperature profile. The main computational part of thiswork is divided into 6 parts. The first contains preparatory calculations, including thecalculation of boiler eiciency. In the second part, a flue gas duct is designed. This isfollowed by a thermal calculation of the boiler for all heat exchange surfaces. The last 3parts deal with the design of the drum, piping and the loss of boiler draft calculation.
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Design of Combustion Air Heater
Kareš, Martin ; Šulák, Marek (referee) ; Lisý, Martin (advisor)
This diploma thesis is dedicated to the design of a combustion air heater for a biomass boiler with a water content of over 60%. The first part of the thesis describes biomass and its use in energetics. Furthermore, the stoichiometry of combustion, heat transfer in the exchanger, design of dimensions and air pressure losses are calculated. The last chapter describes the method of air heating regulation.
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Heat recovery
Kovaříček, Jakub ; Toman, Filip (referee) ; Baláš, Marek (advisor)
This work deals with the design of a heat exchanger for the use of the heat of the gas generated during the gasification of biomass. The gas flowing in the tubular space of the exchanger will be cooled to the required temperature by the air flowing in the intermediate tube space. It is therefore a gas-air bundle exchanger, the outlet air temperature of which is unknown. The introductory part includes an overview of possible designs of exchangers according to several parameters, requirements for exchangers and their functions. The second part deals with the design of the exchanger itself, starting with the determination of physical and other properties of working media, through geometric parameters, the balance of the exchanger and finally the determination of pressure losses of the exchanger.
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