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Calculation of the heat load of the train air conditioning unit
Kasal, Milan ; Milčák, Pavel (referee) ; Pospíšil, Jiří (advisor)
The subject of this diploma thesis is to apply the knowledge of thermodynamics when designing parameters of the train air conditioning unit. In the first part, the issue of air conditioning technology, basic types of cooling circuits and description of individual components are outlined. Furthermore, there is an overview of groups of refrigerants and their labelling. In the second part, a calculation of the heat load of the train unit for the limit design conditions of summer and winter operation, including the application of humid air theory are to be found. There is a basic procedure for designing the main components of compressor cooling, which is almost exclusively used in train applications, outlined. The last part contains the procedure for calculating the gains/losses in the distribution channels of the real air conditioning unit M7 and the evaluation of the results. In the appendix, there is an SW in MS Excel program, which can be indicatively used to calculate the total gains/losses of the distribution channels on any air-conditioning unit before the air enters into the train unit.
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The influence of heat sources to microclimate in indoors space
Janková, Martina ; Ell, Jiří (referee) ; Rubina, Aleš (advisor)
This master thesis with the influence of heat sources to microclimate in indoor space. The aim of the thesis was to make the calculations of the dynamic behavior in indoor space and suggest ventilation systems for exhaust heat load. for found values. In the practical part of the thesis, individual systems are describing and then they are valorizing in accordance with energy intensity and thermal comfort.
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Airconditioning in the clean space
Faltys, Michal ; Ell, Jiří (referee) ; Rubina, Aleš (advisor)
The bachelor´s thesis deals with the designing of air conditioning system for clean spaces of operating rooms and spaces which are necessary for assuring of operation these operating rooms. The system is proposed to meet hygienic, operational and functional requirements for indoor microclimate of clean spaces. The task of this system is the transport of fresh air to interior, the covering of the heat looses during the winter and the covering of heat gains in summer. The equipment is also designed for regulation of air humidity in the interior. The theoretical part devotes to the issue of air conditioning of clean spaces generally, calculating and project´s parts devote of the concrete concept of two air conditioning equipments for the serving of clean spaces in the specified building. The result of this work is the detailed design work of these equipments.
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Industrial hall cooling
Sliva, Matěj ; Gebauer, Günter (referee) ; Šikula, Ondřej (advisor)
This bachelor thesis deals with the issue of working conditions in heat in the workplace of the powder coating plant production line, especially summer operation. The largest heat source here is from the surface. The aim is to optimize measures to reduce heat stress for workers. This is solved by CFD simulations in Designbuilder. It is expected that this will be the first way in which it will evolve in the future. Each simulation focuses on alternative cooling methods or combinations thereof. The work environment requirements for each simulation are evaluated by the WBGT indicator for hot operations.
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Ventilation catering operations
Havlátová, Kristýna ; Rubinová, Olga (referee) ; Formánek, Marian (advisor)
The master’s thesis deals with design of heat recovery and dehumification for the hotel´s kitchen. The design is made to fullfill functional, hygienic and operational ruqirements for the internal microclimate. The main task of air-conditioning systems is to drain away heat gains and intake of requirement minimum of fresh air. The theoretical part is about analysis of internal microclimate.
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Variant solutions reconstruction of airconditioning systems in the laboratory
Faltys, Michal ; Andrys, Petr (referee) ; Rubina, Aleš (advisor)
The diploma thesis deals with the designing and assessment of two variants of the reconstruction of the air conditioning system for the half of 3rd floor laboratory building BioVendor – Laboratorní medicína a.s. company. The system is proposed to fulfil hygienic, operational, economic and functional requirements for indoor microclimate of laboratories. The task of this system is the transport of fresh air to interior and the covering of heat gains in summer. The equipment is also designed for the regulation of air humidity in the interior. The theoretical part deals with the application of heat penetration of solar radiation double glazed construction. Calculating and project part deals with the specific proposal of two variants of a new HVAC system-level studies of which the selected variant is developed as the project documentation. Experimental part is devoted to measuring of CO2 concentration in operationally similar laboratory. The result of this work is to evaluate the operational and economic impacts on the choice of technically feasible options and implementation documentation selected option. The benefit of the experiment is to verify sufficient air exchange to ensure the optimum concentration of carbon dioxide in laboratories.
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Air filtration
Krajčová, Kateřina ; Uher, Pavel (referee) ; Rubinová, Olga (advisor)
The diploma thesis describes the design of air conditioning equipment of materni-ty hospital and experimental measurement nanofilters and their subsequent comparison with conventional air filters. The work consists of three parts. The first part describes the types of filters. Nanofilters and nanofiber materials are de-scribed in detail here. In the second part is the topic of air filtration applied to the maternity hospital. Two variants of air conditioning and cooling are designed for the 3rd floor of this building. The third experimental part deals with antibacterial effects of thr silver fiber nanofilter and its comparison with commonly used filters. It also deals with the pressure drop on the filters at different air speeds.
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Simulation of heating and cooling loads of the A1 building and the analysis of energy saving measures
Bartoník, Adam ; Kolbábek, Antonín (referee) ; Charvát, Pavel (advisor)
This thesis deals with the heat loss and the heat loads simulation of A1 building in the area of The Faculty of Mechanical Engineering, Brno University of Technology and with the measures of the energy saving. The measures of the thermo-technical charakteristics for the winter and summer operations are provided on the base of the current state simulation. These measures include increasing of thermal resistence (of the building case), the radiation shielding, the sun blinds and the passive cooling by the night ventilation. All the simulation are performed in TRNSYS 16.1 software.
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Air heating in the sport hall
Janková, Martina ; Ell, Jiří (referee) ; Rubina, Aleš (advisor)
The main goal of the bachelor’s thesis „name“ is designing an air conditioning device for a sport hall and its social facilities. A solution must fulfill functional, hygienic and operational requirements for the specific microclimate of sport halls. The device is designed to cover heat losses in winter as well as for cool down heat gains during summer. At the beginning a microbiological and an aerosol microclimate in an air conditioning are considered. In the next part of the thesis the required performance of the device is calculated. In the third part is the documentation of both devices is attached.
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