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Gray water heat exchangers
Devečka, Viktor ; Tuhovčák, Ján (referee) ; Fišer, Jan (advisor)
In the present development of building industry and increasing demands for convenience and comfort of living, energy demands of buildings are also getting higher. After heating, the second largest costs are for the production of hot water. Use of hot water produces grey water with high residual thermal energy, which is drained into sewage. The heat recovery system of grey water solves this heat loss problem. This paper deals with the possibilities of using the heat of grey water. It is aimed mainly at the use of heat energy from grey water to reduce the cost of preparation of hot water. The paper analyzed the energy consumption in buildings. Subsequently, it focuses on the methods of using heat from grey water. It familiarizes with the methods of thermal energy recovery and describes drain water heat recovery system. Drain water heat recovery systems' producers from Czech and Slovak market are named. In conclusion, there are two modeling studies evaluating heat recovery system's efficiency.
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Designing an environmentally advanced building
Dubisová, Daniela ; Vyhlídalová, Karolína (referee) ; Horák, Petr (advisor)
The goal of the master project is to design the reconstruction of an environmentally advanced building. The building is of administrative character with a multifunctional part on the first floor. It has four floors. The first two floors will be used as a co-working space and the other two can be rented to a permanent company. There is also a conference room in the building. The work is divided into three parts. The first part deals with the architectural and structural design along with the fire safety design of the buildings. The reconstructed building has a reinforced concrete existing bearing system, which remains unchanged and will be supplemented with a cavity block masonry cladding with insulation. A vegetated roof is proposed. The second part deals with the concept of the building environment technology. Retention tanks are designed with usage of rainwater for flushing system in the first two floors. A total of 112 photovoltaic panels will be placed on the roof. Air-conditioning is designed in all zones of the building, cooling is in the multifunction room and the administration room. The chosen heat source is a hot water pipeline because of the close distance from the supplier Teplárny Brno, a.s part Špitálka. LED lighting is designed in selected rooms. The third part consists of the assessment of various options for modification of the building cladding constructions with the aim of better thermal insulation capabilities. Four methods and their combinations are considered. Based on certain factors, it is evaluated which methods are recommended for the building.
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Complex Production Line for Through Hole and Surface Mount Components Assembly from energy saving point of view
Tomanček, Maroš ; Zatloukal, Miroslav (referee) ; Starý, Jiří (advisor)
Thesis deals with analysis of electronic assembly line from an energy consumption point of perspective. The throughput rate is observed along with consumption of individual devices from the chosen assembly line at Resideo company. The work load balance of the assembly line was evaluated by cycle time analysation. Electrical power and losses were measured with the use of power logger and a thermal camera. The possible energy saving solutions are then concluded from analysis and comparison of power drawn by the devices. Use of low temperature solder alloys and other modern industry solutions were considered with recommendation to be used in the field.
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Gray water heat exchangers
Devečka, Viktor ; Tuhovčák, Ján (referee) ; Fišer, Jan (advisor)
In the present development of building industry and increasing demands for convenience and comfort of living, energy demands of buildings are also getting higher. After heating, the second largest costs are for the production of hot water. Use of hot water produces grey water with high residual thermal energy, which is drained into sewage. The heat recovery system of grey water solves this heat loss problem. This paper deals with the possibilities of using the heat of grey water. It is aimed mainly at the use of heat energy from grey water to reduce the cost of preparation of hot water. The paper analyzed the energy consumption in buildings. Subsequently, it focuses on the methods of using heat from grey water. It familiarizes with the methods of thermal energy recovery and describes drain water heat recovery system. Drain water heat recovery systems' producers from Czech and Slovak market are named. In conclusion, there are two modeling studies evaluating heat recovery system's efficiency.
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