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Analysis of energy saving in industrial washer and dryer
Němeček, Zbyněk ; Bobák, Petr (referee) ; Kuba, Pavel (advisor)
The first part of the bachelor thesis is focused on the professional laundry maintenance issue. View into the common laundry processes and operations is processed by the research way. Then the thesis deals with the experiment, which is the main output. Dependence of the consumption between a washing machine, dryer and temperature of rinsing water is monitored in the performed experiment. On the basis of theoretical knowledge about the viscosity it is assumed that with the rising temperature of rinsing water there is an energy saving. The thesis output is suggestion of energy consumption measurement and mathematical model describing dependencies mentioned.
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Simulation tool for gas microturbine integration into industrial operations
Konečná, Eva ; Stehlík, Petr (referee) ; Ovčačík,, Filip (referee) ; Máša, Vítězslav (advisor)
Current challenging energy situation gives rise to the need for highly efficient use of primary energy sources. Gas microturbines are a potential solution to this situation as they represent a progressive source of combined heat and power production. Gas turbines work with electric efficiency around 30 % and another 50 % is hidden in hot flue gas. Leveraging this waste heat is essential for achieving high overal efficiency of production and minimizing the use of primary energy. This thesis introduces a methodology for integration of gas microturbines into industrial operation. This methodology served as a basis for creating a software tool for selecting an optimal gas microturbine and seting up an efficient use of the waste heat from the produced flue gas, specifically direct drying, technological heating of process streams, preparation of warm utility water, and heat accumulation. It also includes technical-economic evaluation of the investment. The methodology is represented by an unique software tool which evaluates various alternatives of a gas microturbine integration into a mid-sized industrial laundry, and recommends the most favourable option. The tool was build using programming language Python in combination with MS Excel to offer great ease of use without a need for any specialized software. The biggest advantage, however, is its universality which allows adapting this software for other industrial processes. It is sufficient for the user to only have a standard operational knowledge of the target process. A laundry operation was selected for this case study, and data from several industrial laundries in Czech republic was collected. Its analysis revealed that the ratio of required electrical and heat energy is an important criterium when selecting a gas microturbine as the main power source. Specifically for older laundry operations, it is necessary to firstly undergo an energy optimization before selecting a suitable power source. If integrated correctly, it is possible to achieve overal efficiency of the gas microturbine of up to 90 % and an acceptable payback period of the investment. A suitable target process for integrating the gas microturbine is one that leverages the gas microturbine’s biggest advantage – production of hot and clean flue gas. It is necessary to look for those processes where a maximum of this flue gas can be used directly without a need for any other costly devices for heat transfer. Drying in laundries certainly represents such a process. The proposed software is an easy, quick, and most importantly universal tool for evaluating suitability of a gas microturbine based on common operational knowledge of the respective process.
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Usability of Simulink for Laundry Process Modeling
Sobočík, Robert ; Bobák, Petr (referee) ; Kuba, Pavel (advisor)
This thesis is devided into two parts. First part is a bibliographic search and speaks about maths modeling, simulations, a MATLAB Simulink programme, and a laundy process. Second part deals with a math model of an industrial laundry. In this part, there is a detailed descripton of the model and how the model was created.
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Waste heat recovery from an industrial laundry dryer
Kyzlinková, Gabriela ; Horňák, David (referee) ; Máša, Vítězslav (advisor)
Každým dnem slýcháme o problémech spojených s cenami energií, které neustále rostou a o neudržitelnosti neobnovitelných zdrojů se snahou využít každý joule energie, který máme k dispozici. Tyto problémy se pojí s využitím odpadního tepla, což je hlavním motivem této bakalářské práce. V ideální situaci by bylo možné využití veškerého tepla, které z procesů volně uniká bez dalšího zužitkování. Tato bakalářská práce se zabývá prádelenským procesem, a to zejména využitím odpadního tepla z průmyslových sušičů prádla. Teplo ve spalinách v sušičích se nevyužívá a hlavním důvodem je výskyt textilního otěru z prádla, což způsobuje riziko zanešení systému pro využití odpadního tepla. Práce posuzuje možný přínos využití tohoto odpadního tepla. Pozornost bude věnována výpočtu odpadního tepla z několika sušičů z prádelenského průmyslu a stejně tak porovnání ekonomického zhodnocení. V této studii bylo zjištěno, že při využití tohoto odpadního tepla můžeme dosáhnout až 89 kW tepelného výkonu. Rekuperované teplo může být využito k ohřevu vodu, což by vedlo ke snížení provozních nákladů. Zvolen byl plášťový a trubkový výměník, kde by v případě denního čištění došlo ke snížení textilního otěru. Výsledky této práce mohou být aplikovány do nejrůznějších průmyslových prádelen.
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Simulation tool for gas microturbine integration into industrial operations
Konečná, Eva ; Stehlík, Petr (referee) ; Ovčačík,, Filip (referee) ; Máša, Vítězslav (advisor)
Current challenging energy situation gives rise to the need for highly efficient use of primary energy sources. Gas microturbines are a potential solution to this situation as they represent a progressive source of combined heat and power production. Gas turbines work with electric efficiency around 30 % and another 50 % is hidden in hot flue gas. Leveraging this waste heat is essential for achieving high overal efficiency of production and minimizing the use of primary energy. This thesis introduces a methodology for integration of gas microturbines into industrial operation. This methodology served as a basis for creating a software tool for selecting an optimal gas microturbine and seting up an efficient use of the waste heat from the produced flue gas, specifically direct drying, technological heating of process streams, preparation of warm utility water, and heat accumulation. It also includes technical-economic evaluation of the investment. The methodology is represented by an unique software tool which evaluates various alternatives of a gas microturbine integration into a mid-sized industrial laundry, and recommends the most favourable option. The tool was build using programming language Python in combination with MS Excel to offer great ease of use without a need for any specialized software. The biggest advantage, however, is its universality which allows adapting this software for other industrial processes. It is sufficient for the user to only have a standard operational knowledge of the target process. A laundry operation was selected for this case study, and data from several industrial laundries in Czech republic was collected. Its analysis revealed that the ratio of required electrical and heat energy is an important criterium when selecting a gas microturbine as the main power source. Specifically for older laundry operations, it is necessary to firstly undergo an energy optimization before selecting a suitable power source. If integrated correctly, it is possible to achieve overal efficiency of the gas microturbine of up to 90 % and an acceptable payback period of the investment. A suitable target process for integrating the gas microturbine is one that leverages the gas microturbine’s biggest advantage – production of hot and clean flue gas. It is necessary to look for those processes where a maximum of this flue gas can be used directly without a need for any other costly devices for heat transfer. Drying in laundries certainly represents such a process. The proposed software is an easy, quick, and most importantly universal tool for evaluating suitability of a gas microturbine based on common operational knowledge of the respective process.
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Usability of Simulink for Laundry Process Modeling
Sobočík, Robert ; Bobák, Petr (referee) ; Kuba, Pavel (advisor)
This thesis is devided into two parts. First part is a bibliographic search and speaks about maths modeling, simulations, a MATLAB Simulink programme, and a laundy process. Second part deals with a math model of an industrial laundry. In this part, there is a detailed descripton of the model and how the model was created.
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Analysis of energy saving in industrial washer and dryer
Němeček, Zbyněk ; Bobák, Petr (referee) ; Kuba, Pavel (advisor)
The first part of the bachelor thesis is focused on the professional laundry maintenance issue. View into the common laundry processes and operations is processed by the research way. Then the thesis deals with the experiment, which is the main output. Dependence of the consumption between a washing machine, dryer and temperature of rinsing water is monitored in the performed experiment. On the basis of theoretical knowledge about the viscosity it is assumed that with the rising temperature of rinsing water there is an energy saving. The thesis output is suggestion of energy consumption measurement and mathematical model describing dependencies mentioned.
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