|
|
Design of High Pressure Washer
Nyklová, Klára ; John, David (referee) ; Sládek, Josef (advisor)
The topic of this master´s thesis is a design of high-pressure washer designed for hobby and semi-professional users. The work deals with analysis of current state of knowledge, basic technical parameters and the design of high pressure washer. The goal of this thesis is to create a new product that will meet technical, ergonomic and aesthetic requirements.
|
|
|
Influence of small home appliances on economy of solar systems
Kučerová, Simona ; Půčková, Helena (referee) ; Kotlík, Josef (advisor)
This Master´s thesis deals with the influence of small household appliances to the economy of solar systems. The theoretical part is focused to solar systems and describes the possibilities of linking these systems with small household appliances. It adds an effective, ecological and economic aspect of washing and small home appliances suitable for economic household. The practical part evaluates the economic utilization of solar systems with small household appliances.
|
|
|
Design of experiment on a washer extractor
Těthal, Josef ; Šomplák, Radovan (referee) ; Kuba, Pavel (advisor)
This bachelor thesis deals in the first part with research regarding the laundry process and introduction to design of experiments. The next part, which is the output of this work, describes an experiment made. The experiment defines the impact of rinsing temperature and spin speeds on consequential humidity of the laundry.
|
|
|
Waste heat within professional laundry
Svoboda, Adam ; Máša, Vítězslav (referee) ; Bobák, Petr (advisor)
This bachelor thesis deals with professional laundry service and background research on commercial opportunities for utilization of waste heat in industrial laundries. The practical part consists in measuring properties of the waste flow from the industrial washing machine and the calculation of potentially useful heat. In the conclusion possible risks of using heat from waste water and a draft plan for this use are formulated.
|
|
|
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.
|
|
|
Energy and water demand of washing process
Barabášová, Iveta ; Touš, Michal (referee) ; Bobák, Petr (advisor)
The thesis presents a professional washing process in washer-extractor. The aim is to appoint water and energy consumption during a washing cycle based on archive data from Laboratory of energy intensive process, NETME Centre. The data have been measured during washing with steam heating and washing with electric heating. Obtained data are processed via MS Excel software and they are used for simple economic evaluation of washing cycle.
|
|
|
Energy Intensity Reduction of a Professional Laundry Care Process
Bobák, Petr ; Klemeš,, Jiří (referee) ; Noskievič, Pavel (referee) ; Stehlík, Petr (advisor)
Doctoral thesis deals with professional laundry care process and reduction of energy intensity and use of other operational commodities used in the process. Professional laundry care process is a specific energy intensive process; its purpose is to re-establish original properties of the now dirty laundry so that it may fulfil its functions again. This is basically a recycling and regeneration process comprising many sub-operations. Key operation is washing of the laundry in a washing bath, which removes impurities from the laundry. This thesis describes the most common technology of impurities removal, which is washing in a hot washing bath in cooperation with mechanical work and detergents. However, all of the described procedures may also be applied on alternative technologies, such as ozone washing, washing with low-temperature enzymes and ultrasound. Water is applied in all these technologies as a soaking agent. Water must have appropriate properties and must be removed from the laundry after the washing process in subsequent operations (drying, ironing, and pressing). Theoretical introduction of the thesis describes professional laundry care process in detail, and continues with mathematical modelling of the process and its main sub-operations (washing, drying) using mass and heat balance, and data acquisition and their application in research and development. Thesis further describes design of information system on the basis of relational database controlled by web application. This system enables to organize data and information from various sources – measured experimental data, data concerning measurement devices, operational records of machines, etc. Thesis further proposes how to evaluate and reduce energy intensity of a process. Descriptions are validated by examples and case studies. Key section of the thesis is a chapter describing experimental infrastructure. This infrastructure integrates several instalments of laundry equipment and is a fully functional operation of industrial laundry facility with 500kg/shift capacity, which serves as a model of energy intensive process. Sophisticated infrastructure and data acquisition system allows measuring wide spectrum of physical entities and examining factors influencing energy intensity of processes, and relationships between these factors as well as effectiveness of various savings measures in real life facilities.
|
|
|
Evaluation of washing effect on material properties after 3D DLP printing
Uvíra, Dominik ; Jaroš, Aleš (referee) ; Zemčík, Oskar (advisor)
This thesis focuses on the influence of washing on the mechanical properties of 3D DLP printed parts. The aim of the thesis was to experimentally determine the impact of washing agents with different wash durations on the mechanical properties of 3D printed parts using DLP technology. The research describes the devices and materials used. Furthermore, an analysis of washing 3D DLP printed parts is conducted, including a description of polymer dissolution, types of washing agents, and washing methods. Based on the research, materials were selected, including Standard resin, ABS-like resin, and Tough resin. The used washing agents are IPA, Simple Green industrial degreaser, DPM, and a special uncured resin remover called EasyClean. Samples were produced on the DLP 3D printer Anycubic Photon D2, and printing profiles were established based on the research part and own calibration. In the first experiment, the effectiveness of the agents in removing uncured resin was monitored. This was followed by an experimental evaluation of the tensile properties of the prepared samples. Furthermore, the notch toughness of each material was evaluated. In both cases, an analysis of fracture surfaces was conducted. Based on the achieved results, optimal washing durations were determined for all material and rinsing agent combinations, and areas of application were recommended. Subsequently, a custom rinsing agent combining low cost and good mechanical properties was proposed. The final part of the work consists of an economic evaluation of the various rinsing agents, resulting in specific recommendations for purchasing rinsing agents and rinsing duration.
|
|
|
Design of High Pressure Washer
Nyklová, Klára ; John, David (referee) ; Sládek, Josef (advisor)
The topic of this master´s thesis is a design of high-pressure washer designed for hobby and semi-professional users. The work deals with analysis of current state of knowledge, basic technical parameters and the design of high pressure washer. The goal of this thesis is to create a new product that will meet technical, ergonomic and aesthetic requirements.
|
|
|
Waste heat within professional laundry
Svoboda, Adam ; Máša, Vítězslav (referee) ; Bobák, Petr (advisor)
This bachelor thesis deals with professional laundry service and background research on commercial opportunities for utilization of waste heat in industrial laundries. The practical part consists in measuring properties of the waste flow from the industrial washing machine and the calculation of potentially useful heat. In the conclusion possible risks of using heat from waste water and a draft plan for this use are formulated.
|
guest ::
