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Refrigeration systems in the food industry
Dvořák, Josef ; Katolický, Jaroslav (referee) ; Štětina, Josef (advisor)
Bachelor´s thesis is aimed at refrigeration systems in the industry which are used mainly in the food industry. Here are described individual parts that are refrigeration systems assembled. The work also contains summary of the ways you can make use of waste heat and also factors that have impact on economy of operation. The aim of work is to describe the basic analysis of thermodynamic cycles in the refrigeration systems which are displayed on the illustrative diagrams.
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Design of chiller for specific application
Gaverník, Michal ; Kohoutek, Josef (referee) ; Jegla, Zdeněk (advisor)
This diploma thesis deals with design of chiller for specific aplication – The City Theatre in Brno. The solving equipment of cooling appliance includes complete design of heat exchanger, battery cold and dimensioning of pipeline system used for various media. One part of design is also choice of individual coolant pumps, which guarantee necessary cirkulation of cooling medium in a certain pipeline routes. Selected battery cold in this administration reduced the size of the necessary cooling resources, therefore the cost of implementation. Everything is processed in calculating software. The resulting proposal is also drafted in the design program and will serve as one of the bases for subsequent implementation.
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System for Recording and Reporting Fault States of Cooling Devices
Jašek, Filip ; Vašíček, Zdeněk (referee) ; Šimek, Václav (advisor)
The thesis deals with the design and creation of a system for recording and reporting error states of cooling devices on the principle of a compressor heat pump. An important element of the concept of the entire monitoring system is a built-in platform based on the ESP32 microcontroller for evaluating data measured by sensors. Another key element is the communication module, which sends measured data via GPRS in the form of MQTT messages to the service web application. The application receives, evaluates and records measured data. Subsequently are measured data and evaluated error states presented to the user in the form of tables and interactive graphs.
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Minimization of residual stresses for rolled long products
Kubík, Petr ; Raudenský, Miroslav (referee) ; Petruška, Jindřich (advisor)
This thesis deals with simulation of cooling of rail during its passing through cooling device which has been designed by the heat transfer and fluid flow laboratory. Inputs of the computational model have been set up to get best possible correspondence between outputs of the computational model and results of experimental measurement. The solution with using of model of austenitic stainless steel is provided in first part of the thesis. The solution with considering model of carbon steel is performed in next part. Using of model of carbon steel allows including evolution of latent heat during phase changing. A fields of residual stress has been calculated for different cooling conditions in the last part of this thesis.
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Low-temperature biogas purification
Hřebíček, Martin ; Fiedler, Jan (referee) ; Pospíšil, Jiří (advisor)
The aim of this thesis is the issue of low-temperature cleaning of biogas. He briefly acquaint the reader with the technology of production of biogas and its possible use. Provide requirements for low-temperature treatment and purification of biogas to the needs of downstream equipment. Provide an overview of the possibilities of suitable production systems applicable cold. Develop your own design facilities for low-temperature treatment of biogas
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Refrigeration device for home brewery
Křivánek, František ; Tuhovčák, Ján (referee) ; Hejčík, Jiří (advisor)
This bachelor thesis deals with the issue of cooling processes and the design of cooling equipment for home brewery. The first part outlines an introduction to this issue, followed by the design of the cooling circuit and a description of its individual parts. Attached is the cost estimate for this device.
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Cooling unit for home brewery
Straka, Miroslav ; Tuhovčák, Ján (referee) ; Hejčík, Jiří (advisor)
This diploma thesis deals with producing and using low temperatures in home brewing processes. The introductory part describes technological process of brewing beer, followed by a design of a primary fermentation vessel and next an aging vessel. In the next step a suitable wort chiller is designed. All the equipment is designed to be able to run on batteries or a solar photovoltaic panel.
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Design of an HVAC system in a retrofitted family house
Vacenovský, Jan ; Lízal, František (referee) ; Charvát, Pavel (advisor)
This work is devoted to the design of a microclimate facility in a family house. The first part contains analysis of thermal losses before and after using thermal insulation. Based on this analysis, a heating system is proposed, including the necessary technical calculations for the operation of the system. As a heat source, a condensing boiler is selected. At the next point, the thesis focuses on the calculation of the heat gains in selected rooms in order to design a cooling device. A multisplit system is selected for cooling the rooms. In the next part the thesis deals with the design of forced ventilation of selected rooms. The ventilation system provides the necessary air exchange and covers heat losses through ventilation. At the end of the thesis is outlined the concept of regulation of individual systems and also the requirements for individual professions are described.
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Water chiller for ceiling cooling system
Havlíček, Jan ; Chovancová, Michaela (referee) ; Hejčík, Jiří (advisor)
The topic of this diploma thesis is to design water chiller for ceiling cooling system. The thesis is divided into four main parts. The first part deals with the theoretical description of emitting cooling systems. The following part focuses on the theory of refrigerating systems and describes especially the thermal cycle and refrigerants which are used in cooling systems. In the third chapter refrigerating equipment are described. Compressor, heat exchangers and expansion valves belong to the main parts of refrigerating systems. The final chapter is devoted to the draft and selection of components of the refrigerating system.
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Design of a heat pump for a cooling system of controlled wine fermentation
Brucháček, Rudolf ; Hejčík, Jiří (referee) ; Toman, Filip (advisor)
This bachelor’s thesis deals in the first part with research on the issues of heat pumps and the use of cooling devices for controlled fermentation of wine. The second part involves the design of a specific heat pump for this cooling device. It is an air-to-water heat pump with the possibility of reversible operation. The design of the device components is realized using calculation software from well-known companies specializing in this field (Select 8, SSP G8, Coolsector 2, Coolpack). The output of the thesis is a specific component design and an energy evaluation using the coefficient of performance.
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