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Increasing of electricity production in BGS using steam engine
Nahodil, Jiří ; Baláš, Marek (referee) ; Lisý, Martin (advisor)
This thesis deals with the possibilities of using waste heat for power generation with a focusing on biogas plants (BGS). The produced biogas is mainly used for combustion in cogeneration units with internal combustion piston engines. The first part this paper describes the biogas plants. The division of BGS and the biogas processing is mentioned there. Another part is focused on the combined production of electricity and heat. The principles and description various types of cogeneration technologies are presented here. The following are specific options for waste heat utilization for biogas plants. The last section contains proposals to increase electricity production by the BGS with the steam engine and economic evaluation of these proposals is made.
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Grate Boiler for Wood Chips and Coal Combustion
Lauš, Ladislav ; Kohout, Přemysl (referee) ; Lisý, Martin (advisor)
The work deals with the constructional and calculation design of the boiler for burning wood and combustion coal in scale (30/70-coal), in load 50 t/h, parameters of steam output p=7,5 MPa, t=480 °C and a temperature of feed water 105 °C. It is a boiler with natural water circulation by evaporation surfaces. In proposal first steichiometric calculations and enthalpic calculations of air and flue gas are performed. Then it is calculated heat balance, the boiler losses and the thermal efficiency is determined. After designing the combustion chamber and dimensions of pulls are determined. In last chapter the overall energy balance are checked. Drawing documentation of steam boiler is a part of the work.
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Design of heat exchanger for heating and humidification of combustion air
Pollach, Ondřej ; Lisý, Martin (referee) ; Baláš, Marek (advisor)
The diploma thesis‘ goal is to design shell and tube combustion air preheater for biomass boiler. The diploma thesis also includes the research of the effect of flue gas condensation on boilers power increase. The first part of the diploma thesis is theoretical introduction about types of air preheaters, options of air moisturing and effect of flue gas condensation on boiler. Following part describes the thermal calculations and construction design of air preheater as well as the condensing flue gas power increase and power increase due to humidification of combustion air.
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Biomass Steam-Boiler
Szabó, Gergely ; Brázdil, Marian (referee) ; Lisý, Martin (advisor)
This bachelor’s thesis is a professional research dealing with a biomass steam boiler. The main aim of the thesis is the description of the structure, the function of individual parts and the regulation of the boiler. The first part of the thesis is devoted to boilers in general, presents their fuels, focuses on solid fuel-fired boilers and describes the steam generator of boilers. The second part deals with a specific biomass steam boiler, describes its main parts and discusses the regulation circuits of the boiler.
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Increasing the energy efficiency of industrial heating plant
Spišák, Lukáš ; Lisý, Martin (referee) ; Kracík, Petr (advisor)
This bachelor thesis consists of two parts. The introductory chapters are devoted to the basic description of cogeneration and trigeneration technologies, focusing on the description of cogeneration units and cooling devices. The second part of the thesis compares two specific ways of using cogeneration units and gas boilers in the CHEMOSVIT ENERGOCHEM a.s. in the town Svit. Subsequently, both variants are evaluated energetically and economically.
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Risk of Waste Combustion in Small Boilers
Kopecká, Eliška ; Špiláček, Michal (referee) ; Lisý, Martin (advisor)
The bachelor's thesis deals with the issue of waste combustion in small boilers. In the first chapter, the components of household waste are specified in more detail, as well as the pro-duction and possible waste management. The second chapter is focused on the formation of the pollutants during combustion and their impact on the environment and the human organ-ism. In the third chapter is presented the process of the operation of the waste incinerator and there are mentioned the limit values of the emissions that are released into the air. The fourth chapter deals with the reason for the origin and the comparison of the pollutants aris-ing from combustion in small boilers. Materials defined as household waste and pollutants released from them during incineration are described here. In the end, the results of the the-sis are evaluated.
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Energy consumption and energy supply of educational building
Šperka, Radim ; Lisý, Martin (referee) ; Pospíšil, Jiří (advisor)
This thesis deals with the processing of an energy audit of the selected building for daily education. The target of this thesis is an evaluation of the current situation of the building, it means the evaluation of the thermal-technical qualities and energy consuption. For the initial state new measures will be suggested to reduce the energy consuption. One of the measures will be a proposal for an alternative way of supplying of the thermal energy, using the thermal pump. These suggested saving measures will be evaluated, including basic economic analysis.
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Steam boiler for biomass and sand 92,5t/h
Špiláček, Michal ; Lisý, Martin (referee) ; Skála, Zdeněk (advisor)
This master’s thesis is dealing with design of steam boiler for wood chips. Wood chips are considered as biomass and so the steam boiler is considerate to enviroment. Main purpose of this work is calculation of size and number of water/steam heating surfaces so the boiler can produce steam with required parametres of temperature, pressure and amount.
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