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Condensing boiler with solar collectors for thermal energy supply of residences
Zeman, Radek ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with practical design of heat supply of real house in Libhošť, Nový Jičín. Main strategy of heat supply is gas condensation boiler, that replaces current gas boiler, with solar collector. From known house heat loss we determine temperatures of heating water and power of boiler, that heats the house and hot water. System with solar collector is designed to heat hot water in the house. All necessary equations are calculated both for long term measured meteorological data and for data in year 2015. Heat gains and payback periods of investment in solar system are determined from them. Payback periods are calculated given to price of heat that gas boiler produces. Equations and payback period evaluation are made for systems with one to four solar collectors. There is recommendation at the end of thesis, whether the solar system is advantageous, or not.
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Piping systems for district heating
Malach, Tomáš ; Horák, Petr (referee) ; Hirš, Jiří (advisor)
In the first part of master thesis is presented general introduction to district heating system (DHS) and hydraulic calculation for DHS. The next part deals with analysis operation of DHS and the pressure diagram for certain time interval. Subsequently, the thermohydraulic characteristics for the hydraulic main branch (comparing manual calculation with software calculation) and also the selected thermal and hydraulic characteristics for the whole DHS are shown. The last part is focused on the determination of the amount of heat supplied based on the ultrasonic flowmeter and the temperature probes. Subsequently, the computer simulation is also carried out, aiming at approximating the real heat supply from heat source to solved thermal network in winter.
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Air-water heat pump
Ondráček, Miroslav ; Moskalík, Jiří (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with modern detached house heating by heat pumps. Heat pump is an energetic device able to withdraw (at relatively low temperature) thermal energy from surrounding environment and transform it to heat usable for heating a house or warming up water or a swimming pool. For the process to work, it is necessary to provide a little electrical energy to propel a compressor. Relation between thermal energy gained and electrical energy supplied is then called a heating factor. The heating factor is usually between 3 and 5 according to heat pump operating conditions. The lower is an output temperature, the higher is the heating factor. An underfloor heating operated at 35 degrees Celsius (while the house is warm enough) is ideal for using the heat pump. The thesis describes various heat pump types and their advantages and disadvantages. Air/water heat pump is then explained in more detail including estimation of investment rate of return compared to gas heating.
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Comparative study of PV and heat pump in domestic energy supply
Kiša, Michal ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This thesis focuses on the utilization of a heat pump and photovoltaic system on specific residential house. It clarifies the basic concepts of the heat pumps, photovoltaics and their application on a house. In the description of the house there are mentioned basic parameters, a description of the existing system. There are heat demands calculations for house heating and water heating, calculated according to the theoretical values and these are compared with the actual values. The practical part deals with the design of heat pump and photovoltaic system. Also there are assesses of the purchase prices, the operational costs and the following investment returnability in comparison with a fireplace insert with accumulation storage and an integrated electrical heating element.
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Piping systems for district heating
Malach, Tomáš ; Horák, Petr (referee) ; Hirš, Jiří (advisor)
In the first part of master thesis is presented general introduction to district heating system (DHS) and hydraulic calculation for DHS. The next part deals with analysis operation of DHS and the pressure diagram for certain time interval. Subsequently, the thermohydraulic characteristics for the hydraulic main branch (comparing manual calculation with software calculation) and also the selected thermal and hydraulic characteristics for the whole DHS are shown. The last part is focused on the determination of the amount of heat supplied based on the ultrasonic flowmeter and the temperature probes. Subsequently, the computer simulation is also carried out, aiming at approximating the real heat supply from heat source to solved thermal network in winter.
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Energy from Agricultural Land
Šatra, Jan ; Bičík, Ivan (advisor) ; Musil, Ladislav (referee)
Thesis is concerned with relation of usable energy and space as it's widely spread source. For this purpose are introduced not only a few indicators suitable to energy management description, but also principles of environmental assessment thinking are expained, as these help to distinguish the really sustainable ways of deriving energy from space. As examples of energy-from-space extraction are introduced photovoltaics, liquid biofuels and fast growing energy plants. After a brief entry to heat supply problematics, focus is remains on a simple case study: quantifying relationship between local heat demand and local potential production of solid biomass from short rotation coppice. This so far rather hypothetic relation is examined at the municipal level, while Central and South Bohemia regions are the target area. Soil characteristics and population census data (2001) about residental habitats are used.
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Condensing boiler with solar collectors for thermal energy supply of residences
Zeman, Radek ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with practical design of heat supply of real house in Libhošť, Nový Jičín. Main strategy of heat supply is gas condensation boiler, that replaces current gas boiler, with solar collector. From known house heat loss we determine temperatures of heating water and power of boiler, that heats the house and hot water. System with solar collector is designed to heat hot water in the house. All necessary equations are calculated both for long term measured meteorological data and for data in year 2015. Heat gains and payback periods of investment in solar system are determined from them. Payback periods are calculated given to price of heat that gas boiler produces. Equations and payback period evaluation are made for systems with one to four solar collectors. There is recommendation at the end of thesis, whether the solar system is advantageous, or not.
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Change of heat source in a heating palnt 2.5 MW
Pikola, Jan ; Pospíšil, Jiří (advisor)
The scope of this Master´s thesis is estimation of changing of heat source in a heating plant 2.5 MW. In the present heating plant burns natural gas, placing of the heating plant makes it possible development source of burning biomass. The scope of thesis is establish with regard to developed capital and operational costs, next effects to environment in scene of heat source, measuring and regulation of technological unit, determination of acceptable size of fuel depot and composition of fuel and ashes economy. The results of this Master´s thesis can be used as a basis about determination toward investment.
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Comparative study of PV and heat pump in domestic energy supply
Kiša, Michal ; Špiláček, Michal (referee) ; Pospíšil, Jiří (advisor)
This thesis focuses on the utilization of a heat pump and photovoltaic system on specific residential house. It clarifies the basic concepts of the heat pumps, photovoltaics and their application on a house. In the description of the house there are mentioned basic parameters, a description of the existing system. There are heat demands calculations for house heating and water heating, calculated according to the theoretical values and these are compared with the actual values. The practical part deals with the design of heat pump and photovoltaic system. Also there are assesses of the purchase prices, the operational costs and the following investment returnability in comparison with a fireplace insert with accumulation storage and an integrated electrical heating element.
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Air-water heat pump
Ondráček, Miroslav ; Moskalík, Jiří (referee) ; Pospíšil, Jiří (advisor)
This diploma thesis deals with modern detached house heating by heat pumps. Heat pump is an energetic device able to withdraw (at relatively low temperature) thermal energy from surrounding environment and transform it to heat usable for heating a house or warming up water or a swimming pool. For the process to work, it is necessary to provide a little electrical energy to propel a compressor. Relation between thermal energy gained and electrical energy supplied is then called a heating factor. The heating factor is usually between 3 and 5 according to heat pump operating conditions. The lower is an output temperature, the higher is the heating factor. An underfloor heating operated at 35 degrees Celsius (while the house is warm enough) is ideal for using the heat pump. The thesis describes various heat pump types and their advantages and disadvantages. Air/water heat pump is then explained in more detail including estimation of investment rate of return compared to gas heating.
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