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Economy building refrigeration systems
Kohút, Radovan ; Formánek,, Marian (referee) ; Rubinová, Olga (advisor)
The thesis deals with the refrigeration systems. It analyzes ways to optimize the refrigeration process and the associated energy savings. In a practical application on an industrial building where there is the need of cooling the machinery, it compares the reference system with another two optimized alternatives. The heat recovery alternative supports heating and hot water supply and the water-side free cooling alternative lowers the energy consumption during the cold period of the year. The experimental section assesses the suitability of floor cooling in relation to the stratification of air temperature along the height of the room and the effect on thermal comfort of people.
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Mean Radiant Temperature Measurement
Truksa, Lukáš ; Zuth, Daniel (referee) ; Janečka, Jan (advisor)
This work is focused on parametry environment. In particular, this work is focused on the mean radiant temperature, which is a parameter with good meaningful capabilities. In The work we introduce with some ways mean radiant temperature measured and what are currently the sensor for this measurement. An integral part of this work is also Introduce the human thermal comfort, which plays an important role in measurement mean radiant temperature. In another part of the thesis is done propose a simple sensor for measuring the mean radiant temperature. And with other devices that are designed to measure the mean radiant temperature is verifying its functionality.
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The technique of smart school buildings
Drábková, Helena ; Mauder, Tomáš (referee) ; Štětina, Josef (advisor)
This bachelor‘s thesis briefly discusses about regulation of energy consumption in buildings with specialization on building intelligent systems and its application at schools. It briefly characterizes regulation of heating, ventilation, air-conditioning and lighting and its integration into centralized control component. Thesis discusses about systems from a few producers, short description of economic operation, a vision of these systems into the future and examples of implemented installations.
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Assessment of thermal comfort in buildings
Procházka, Aleš ; Pokorný, Jan (referee) ; Charvát, Pavel (advisor)
This bachelor thesis summarises knowleges about methods used for assessments of thermal comfort in buldings. In opening part of thesis is thermal comfort introduces as important part of overall satisfaction with indoor environment. There are also described fyziological basics and ways of thermoregulation and individual elements of thermal balance. Next part of thesis is focused on thermal and humidity factors of indoor environment. Some combinations of these factors form thermal comfort. Main part of thesis describes methods of assesments of thermal comfort using PMV and PPD indices. For practical uses there are examples of comfort diagrams, which are based on PMV index, Thermal Comfort Meter and Thermal Manikin. Last part contains description of some instruments for measurement of used physical values.
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Airflow inside of a passenger car
Bělka, Miloslav ; Štětina, Josef (referee) ; Charvát, Pavel (advisor)
This bachelor thesis deals with hearting, air-conditioning, air distribution and airflow in a cabin of a passenger car. Ventilation of the cabin is needed for acceptable level of indoor air quality. The air supplied into the cabin is conditioned by heating or air conditioning system in order to achieve an appropriate level of thermal comfort of the passengers. Various arrangements of automotive heating and air-conditioning systems are described in the thesis. The thesis also includes the description and results of a set of measurements of air temperatures and air velocities inside of a passenger car cabin.
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Indoor Air Quality Assessment
Doležal, Libor ; Fišer, Jan (referee) ; Krejčí, Vladimír (advisor)
The thesis inform the reader about the agents that affect the indoor air quality, especially those related to thermal comfort. It also draws attention to discomfort caused by some of the agents. There are introduced basic methods and measurement procedures of quantities necessary to evaluate the thermal comfort. The thesis is not a direct manual to the measurement of the mentioned quantities but it guides the reader to the most suitable measuring instrument according to the measurement objective and range. Further it provides a review of standards and public notices related to this theme.
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Warm air heating systems in family houses
Jankůj, Josef ; Hejčík, Jiří (referee) ; Košner, Jan (advisor)
The aim of my work on the theme “Warm air heating systems in family houses” is to summarize used systems, it´s individual components, pass judgment on preferences and shortcomings of this systems. First part is oriented on general familiarization with air rating, examination advantages and disadvantages against classic warm-water system. Second part put mind to elementary systems of airing buildings, their parting and identification with their particular principle.
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