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Interiors of small and medium enterprises as a source of waste heat for a heat pump
Valachovič, Filip ; Miklas, Václav (referee) ; Máša, Vítězslav (advisor)
Environmental problems and the recent high rise in energy prices are forcing us to look for more sophisticated and more energy-efficient solutions. As a result, more and more renewable energy sources and waste heat are being used. Sources of waste heat, which have so far remained outside the area of interest, such as waste heat contained in the air of industrial interiors, are thus becoming the subject of interest. This waste heat undoubtedly has huge potential in many industries. The use of waste heat is always complemented by a certain technology. In terms of operating costs and the environment, the heat pump seems to be a perspective solution. The main goal of the presented thesis is to evaluate the application potential of heat pumps for the use of waste heat contained in the air of the interiors of small and medium enterprises. The first part deals with an overview of available technologies for the use of waste heat, introduction to heat pump technology, the issue of heat load of industrial buildings and due to the possibility of using a heat pump for cooling the interior, attention is also paid to hygienic requirements for the quality of the interior. The second part of the work presents a conceptual design of the integration of the heat pump into the selected process – laundry facility. The methodology of the solution consists of the selection and analysis of the process in terms of heat energy, heat pump design, economic analysis, and evaluation of the achieved results. The currently available waste heat in the air of the examined laundry corresponds to 37 kJ and the heat load corresponds to the heat output of 526 kW. The minimum heat output of the heat pump for heating 4.3 m3 of water per hour corresponds to 170 kW at a compressor electrical input of approximately 23 kW. This parameters, current energy prices, an estimated investment of CZK 1.5 million and compared to water heating by natural gas combustion give a payback return in less than 6 months. Given the current energy prices, it can be stated that the heat pump is the optimal solution in this case. It is surprising that no work on this topic has been created yet and it can be stated that the diploma thesis presents a completely unique solution with a high potential not only in the laundry process.
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Design of a unit for utilization of waste heat from a computing system
Valachovič, Filip ; Brázdil, Marian (referee) ; Chýlek, Radomír (advisor)
Global warming and the associated high energy costs are considered as the main problems at presents. As a result, there is an interest in reusing waste energy. This bachelor thesis is devoted to the design and assessment of the potential use of waste heat generated by the systems for the mining cryptocurrencies. The first part of the work deals with the process of mining cryptocurrencies as a whole and their energy consumption. The work, among other things, deals with the possibilities of cooling and subsequent recovery of waste heat from these systems. Part of the work is a theoretical design of a unit for waste heat recovery from mining rigs, considering immersion cooling with the resulting economic balance.
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Interiors of small and medium enterprises as a source of waste heat for a heat pump
Valachovič, Filip ; Miklas, Václav (referee) ; Máša, Vítězslav (advisor)
Environmental problems and the recent high rise in energy prices are forcing us to look for more sophisticated and more energy-efficient solutions. As a result, more and more renewable energy sources and waste heat are being used. Sources of waste heat, which have so far remained outside the area of interest, such as waste heat contained in the air of industrial interiors, are thus becoming the subject of interest. This waste heat undoubtedly has huge potential in many industries. The use of waste heat is always complemented by a certain technology. In terms of operating costs and the environment, the heat pump seems to be a perspective solution. The main goal of the presented thesis is to evaluate the application potential of heat pumps for the use of waste heat contained in the air of the interiors of small and medium enterprises. The first part deals with an overview of available technologies for the use of waste heat, introduction to heat pump technology, the issue of heat load of industrial buildings and due to the possibility of using a heat pump for cooling the interior, attention is also paid to hygienic requirements for the quality of the interior. The second part of the work presents a conceptual design of the integration of the heat pump into the selected process – laundry facility. The methodology of the solution consists of the selection and analysis of the process in terms of heat energy, heat pump design, economic analysis, and evaluation of the achieved results. The currently available waste heat in the air of the examined laundry corresponds to 37 kJ and the heat load corresponds to the heat output of 526 kW. The minimum heat output of the heat pump for heating 4.3 m3 of water per hour corresponds to 170 kW at a compressor electrical input of approximately 23 kW. This parameters, current energy prices, an estimated investment of CZK 1.5 million and compared to water heating by natural gas combustion give a payback return in less than 6 months. Given the current energy prices, it can be stated that the heat pump is the optimal solution in this case. It is surprising that no work on this topic has been created yet and it can be stated that the diploma thesis presents a completely unique solution with a high potential not only in the laundry process.
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Design of a unit for utilization of waste heat from a computing system
Valachovič, Filip ; Brázdil, Marian (referee) ; Chýlek, Radomír (advisor)
Global warming and the associated high energy costs are considered as the main problems at presents. As a result, there is an interest in reusing waste energy. This bachelor thesis is devoted to the design and assessment of the potential use of waste heat generated by the systems for the mining cryptocurrencies. The first part of the work deals with the process of mining cryptocurrencies as a whole and their energy consumption. The work, among other things, deals with the possibilities of cooling and subsequent recovery of waste heat from these systems. Part of the work is a theoretical design of a unit for waste heat recovery from mining rigs, considering immersion cooling with the resulting economic balance.
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