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Heat exchanger design
Skalický, Vojtěch ; Lachman, Jakub (referee) ; Baláš, Marek (advisor)
This bachelor's thesis deals with the design of a heat exchanger for water – air media. In the first part, the principle of the heat exchangers function and the basic division of heat exchangers are mentioned. Subsequently, an overview of frequently used heat exchangers working with liquid – gas media is presented. Design variants, types of ribbing used and operating conditions are discussed. Design variants, fin types used and operating conditions are discussed. In the second part, the design of the exchanger itself, which includes the choice of geometric dimensions and thermal and hydraulic calculation of the exchanger, is already processed. At the end of the thesis, the obtained results are evaluated. The work also includes the basic drawing documentation of the designed heat exchanger.
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Heating and cooling systems in office operations
Dostál, Petr ; Horák, Petr (referee) ; Formánek, Marian (advisor)
The diploma thesis deals with the design of the heating and cooling system, inclu-ding hot water preparation for the administrative part of the production hall. The first part of the thesis briefly discusses the history of heating and cooling of office buildings, legislative requirements and current solutions. The second part contains the design of the entire heating and cooling system with heat pump as a source of heat and cold. The final part of the thesis describes the experimental measure-ment and evaluation of the efficiency of the ice rink source.
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Low temperature heating with heat pumps
Bros, Miroslav ; Horká, Lucie (referee) ; Počinková, Marcela (advisor)
The master’s thesis deals with design and comparison of two variants of low temperature heating with radiant systems and heat pumps. Building is used for administrative purposes. The theoretical part describes the evaluation of heat pumps. The calculation part deals with the calculation of heat loss of the building, the design of the heating system, the hot water preparation system, the heat source, all necessary supplementary devices, and the calculation of yearly heat and fuel consumption for heating and hot water preparation of the building. Heating system consists of floor heating and ceiling heating. For hot water preparation an indirect fired hot water storage tank is designed. The source of heat is a cascade of two air/water heat pumps. Experimental part is focused on measuring and assessment of pressure loss, heat output and efficiency of radiant ceiling panel.
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Heat exchanger design
Vašíček, Jan ; Baláš, Marek (referee) ; Špiláček, Michal (advisor)
This bachelor thesis deals with the design of a cooling water – water heat exchanger. The content of the work is the basic sorting and description of the heat exchanger. Next it includes calculation and design of geometric dimensions, calculation of pressure losses in the tubeside and shellside and calculation of the actual output of the heat exchanger. This work also contains the drawing documentation of the designed heat exchanger.
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The effect of boiler tube bundle fouling on its service life
Volná, Kateřina ; Ing. Zdeněk JŮZA, Ph.D., MBA (referee) ; Naď, Martin (advisor)
Fouling of tube bundles in boilers on the flue gas side affects not only the service life, but also the boiler heat output and increases maintenance and operating costs. Therefore, it is necessary to minimize or completely eliminate this process. This thesis focuses on comparison of the service life and the heat output of the tube bundles with and without deposit in the coal fired boiler. Simulations of flue gas flow in area of tube bundles with and without deposit are performed using ANSYS Fluent software, which shows that the surface of tube bundles with deposit is much less heated than the surface without deposit. The thermal loads of tubes obtained by the CFD analysis are applied to the model, which is created in the program ANSYS Mechanical, where the calculation of the temperature field in the cross section of the pipe is realized. The effect of fouling on creep life and heat output is then evaluated based on simulation results. The results show that fouling increases creep life, but significantly reduces heat output of heavily fouled tubes. Hence the flue gas flows at a higher temperature to the rest of the tube bundle, and the service life of those tubes will therefore probably decrease.
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Heating of a residential building
Balážová, Pavla ; Čupr, Karel (referee) ; Treuová, Lea (advisor)
This bachelor thesis consists of three parts - theoretical, numerical and project. In the theoretical part, different types of heating for apartment buildings are dealt with. The numerical part is focused on individual parts of the heating system in the apartment building. As the heat source a cascade of gas condensing boilers was chosen. A flat station is for heating warm water and its distribution to each dwelling unit. The technical report and detailed documentation are dealt with in the last project part.
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An Apartment House - heating
Vyhnánek, Jan ; Čupr,, Karel (referee) ; Treuová, Lea (advisor)
Bachelor work consists of theoretical and numerical part. In the theoretical part deals with various methods of heating in apartment buildings. The numerical part deals with individual part of the heating system in the apartment building. For heating the apartment building was chosen central heating system with indirect hot water. As the heat source was chosen gas heat pumps in combination with condensing boilers.
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Heat exchanger design
Jílek, Tomáš ; Kudela, Libor (referee) ; Špiláček, Michal (advisor)
This bachelor thesis deals with the design of a tube heat exchanger for water - water media, which is part of a cooling circuit. The thesis contains basic description and distribution of tube heat exchangers. It also includes designing and calculating geometric dimensions, calculating the pressure losses in the pipe and intermediate flange spaces and calculating the actual output of the heat exchanger. Part of the thesis is also drawing documentation of the proposed heat exchanger.
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Heating of nursery school building
Nečas, Lukáš ; Adam, Pavel (referee) ; Počinková, Marcela (advisor)
The bachelor's thesis deals with the design of a kindergarten heating. The theoretical part presents the heat pumps. The calculation part describes a specific design of heating for kindergarten for 54 children by a low-temperature system with a combination of underfloor heating and radiators, a proposal for the preparation of hot water and other necessary equipment of the system. A system of two air-to-water heat pumps is designed as a heat source. Forced ventilation is provided by an air handling unit. The building is designed as a building with almost zero energy consumption
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