National Repository of Grey Literature 62 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
HVAC of part of the hospital department
Pěnčíková, Monika ; Rubina, Aleš (referee) ; Hirš, Jiří (advisor)
The bachelor's thesis deals with the comprehensive design of a new workplace with instrumentation, and thus also the technical equipment of part of this hospital department. It will be modernized and equipped with new, more efficient devices. The construction work will take place within the interior of the building, with the exception of the replacement of windows and the installation of an HVAC unit on the roof. The affected spaces are marked in the drawing section and contain a SPECT x-ray examination room, a control room from where employees control the necessary equipment, an entrance hall, three patient changing rooms, a toilet or a patient background and a secondary examination room. The area in question is divided into two functional units. The theoretical part is devoted to hospitals, their definitions and divisions. Subsequently, I deal with radiology and the necessary technical background for the SPECT area in question.
Energy efficient boarding house in Havlíčkův Brod
Hlaváčová, Magda ; Hirš, Jiří (referee) ; Rubinová, Olga (advisor)
The aim of this master‘s project is the design of an energy-efficient guest house with a restaurant located in Havlíčkův Brod. This master‘s project consists of three parts. The first part focuses on the architectural and structural design of the guest house, the second part on the design of building services and the third part on the comparison of software for creating the energy performance of a building. It is about the DEKSOFT program in the Energy module from the company DEK, a.s. and in the Energy 2020 program from Svoboda Software. The building is detached and has two above-ground floors. The ground floor contains a restaurant with an adjacent kitchen, an office, a utility room, an air condition room and an entrance hall with a reception and a staircase to the second floor. On the second floor there are six apartments and one common corridor. The structural system is designed from ceramic blocks with thermal insulation made of mineral wool. Horizontal load-bearing structures and stairs are designed from cast-in-place reinforced concrete. The building has a flat service roof and flat extensive green roof. Heating is provided by a wood-fired solid fuel boiler located in the utility room. The building has mechanical ventilation with heat recovery. There are also photovoltaic panels on the flat roof of the building.
Aspects of an experimental solution with the use of geothermal energy in Balneotherapy
Miček, Denis ; Horák, Petr (referee) ; Kabele, Karel (referee) ; Hirš, Jiří (advisor)
The Earth, our home planet is world unlike any other. The third planet from the sun is the only place in the known universe confirmed to host life. We, the humans always headed up to reach set up goals, innovate our technologies and way of living. The fact that, we had never been aware of is that this race to our bright and modern future is destroying our home. By this time, the global temperature arises by 1,9 oC since 1880, 427 gigatons of ice sheets were melted and there are 414 ppm of carbon dioxide particles in our atmosphere. As the trend is changing and we are above to think in green way of living, there is necessity to set up roadmaps and actions plans to stop, eventually decrease the damage which was already caused. The European union started to measure and provide actions plans to decrease the pollution and production of greenhouse gases since the year 1990 – which was set up as reference year for comparison to progress. This arrangement forced the countries to start evaluating the current statuses of their public and industrial sectors in terms of climate changes and provide climate plans for reducing the greenhouse gases. The most important part of climate action plans is to involve the renewable sources of energy into all public and industrial sectors and in this way start the green way of living. Therefore, the investigation and proper understanding of this problems must be the main focus of technical universities and scientific sectors. This dissertation thesis is the summit of 8 years studies and investigation in field of renewable sources of energy, mainly focused on geothermal energy which production in year 2002 was 0 GWh. The main goal is to experimentally analyze designed solutions, elaborated within master and bachelor thesis in real operation of Balneotherapy departments at Slovak Health Spa Piestany, Slovakia from energy, economic and environmental point of view, to set up energy, aqua management and fully understand the way of involvin
Condensation heat transfer of water steam on cylindrical wall
Horká, Lucie ; Bašta,, Jiří (referee) ; Kabele,, Karel (referee) ; Hirš, Jiří (advisor)
The doctoral thesis is aimed at condensation heat transfer of water steam on a cylindric wall. This physical phenomenon of water steam condensation is examined and published in leading scientific journals for more than 100 years. The main aim of the doctoral thesis is study of the water steam condensation on a cylindrical wall. The result of the doctoral thesis is the theoretical and experimental determination of the heat transfer coefficient during the water steam condensation on the cylindrical wall. This coefficient is a basic parameter of design of all the thermal devices, which use the condensation heat of water steam in technical practice.
Analysis of influence of a roof construction on indoor thermal stability in summer season
Hofman, Petr ; Katunský,, Dušan (referee) ; Hirš, Jiří (referee) ; Mohelníková, Jitka (advisor)
The design of the building must respect the basic conditions for ensuring thermal comfort in the living space. The thermal comfort is influenced by several factors and one of them are the constructions of the building envelope. This work was focused on investigating influence of roof structures. The goal was to make analysis of influencing the selected modifications of the roof compositions to the thermal stability in the summer formed by experiments and detailed computer simulations. On the basis of these findings were defined suitable modifications. It has been worked out that the maximum indoor air temperature can be reduced by up to 1.5 °C in a suitable way. The cool roofs, thermal inertia and the ventilated air cavity layer have the greatest benefit. When evaluating the return on investment in a roof with high thermal inertia represented by a concrete layer of 100 mm, its return compared to a light roof and airconditioning is 12.1 years. The return on installation of external blinds on roof windows is 3.3 years compared to airconditioning.
Energy and environmental assessment of buildings
Kubínek, Tomáš ; Baroň, Alexandr (referee) ; Hirš, Jiří (advisor)
The aim of this thesis is to give a general idea of energy; what it is, how it is created (rather transformed), how it is distributed and used in many of its forms. In detail it describes how buildings are evaluated in terms of energy consumption, how can we lower this consumption and how it affects the environment. Part A, theory, gives a general idea of the theory surounding transformations, losses and uses of energy. It describes processes of assessment of buildings. Part B, calculation methods, give an idea how current CZ/EU regulations describe optimal calculation methods. These methods include: energetic, enviromental and economic evaluation of buildings or energy-saving measures. Part C, project, describes an exact measuring in Elementary School Svážná-Brno. It describes the means of obtaining information. Includes graphically processed monthly energy consumptions. It also includes list of used sensors (measuring air temperature, humidity and surface temperatures), schemes of sensors placements, schemes of building and technical systems. The main part of this project are graphs of measured data made in EXCEL with descriptions.
Solar hot water storage tank
Vyhlídalová, Karolína ; Vranayová,, Zuzana (referee) ; Hirš, Jiří (referee) ; Horák, Petr (advisor)
The solar hot water storage tank is off great importance in the solar collector array. It allows transformed energy accumulation thus deals with the inconsistency between supply and demand. The suitable design of the storage tank can improve system efficiency. The storage capacity represents the balance between the amount of stored hot water and the tank's heat losses. The design of the storage capacity is based on three hypotheses. The coverage of hot water demand by solar energy, the ratio between storage capacity and solar thermal collector area and the prediction that the storage capacity corresponds to one- to twofold hot water demand. The purpose of this thesis is to share an understanding of the solar storage tanks design and to improve the design through numerical simulation, experimentations and general calculations. It also focuses on the confirmation of the used hypotheses and determination of the best way to design the solar storage tank for general practice and further potential discussions. The simulation model has three variables – the storage capacity, collector area and the number of occupants. The intent is to find the interdependence of these three variables. The purpose of the simulations is to modify the design of the solar tank based on the mutual influence of studied parameters. The modifications are performed based on the users' needs.
Šteffek, Libor ; Ingeli,, Rastislav (referee) ; Hirš, Jiří (referee) ; Ostrý, Milan (advisor)
This dissertation thesis primarily focuses on the experimental measurement of energy consumption of a given energy-passive family house as well as theoretical research in the field of energy calculations using computer simulations. The results of quasi-stationary and dynamic simulations, with varying computational and real-time climate data, are compared with experimental measurements. Using the dynamic calculation model, which was validated by actually measured data, the relationship between architectural design and the energy performance of the building was analyzed. The influence of selected different operating modes for heat consumption on heating, cooling, ventilation, and interior overheating is observed. The result of the mutual interaction of several input parameters of variant solutions provides the basis for optimization of the whole design.
Analysis of boundary conditions of ground heat exchangers
Floreková, Skarleta ; Horák, Petr (referee) ; Hirš, Jiří (advisor)
Diplomová práca,, ,,Analysis of boundary conditions of ground heat exchangers,, je primárne zameraná na analýzu okrajových podmienok a hlavných faktorov vplývajúcich na spoľahlivý návrh a prestup tepla plošného zemného výmenníka v oblasti geotermálnych aktivít na kúpeľnom ostrove v Piešťanoch. Posúdenie možných vplyvov na životné prostredie, ako je napríklad vznik tepelných zmien v dôsledku extrakcie tepla vrátane zamŕzania pôdy v okolí potrubia a potenciálneho znečistenia podzemných vôd je taktiež rozoberané. Súčasťou tejto záverečnej práce boli spracované tri numerické analýzy metódou konečných prvkov pomocou softvéru COMSOL Multiphysics 5.6., ktoré sa môžu vyskytnúť v tejto konkrétnej oblasti. Prvá numerická analýza je podrobená štúdii dynamických procesov plošného zemného výmenníka tepla a zeminy nasýtenou vodou pri konštantnej teplotnej okrajovej podmienke pôdy. Dynamický proces zemného výmenníka tepla a nasýteného podložia pri nestálej teplotnej okrajovej podmienke je skúmaný v druhej numerickej analýze. Posledná analýza je vyhotovená na posúdenie prevádzky plošného zemného výmenníka tepla s možnosťou prúdenia podzemnej vody v rovnakej vrstve. Vďaka týmto numerickým štúdiám a výsledkom dynamických tepelných modelov, každá prípadová štúdia obsahuje rozloženie teplôt v zemine, výstupné teploty z výmenníka a vlastný čiastočný záver.
Office low-energy building of research center in Brno
Fireš, Michal ; Velísková, Eva (referee) ; Hirš, Jiří (advisor)
The aim of this master thesis is to design an office building for research institute in Brno. In the first part there is designed building structure. The building has two floors. First floor with four offices, toilets, storerooms, kitchen and utility room and second floor with two offices, toilets, conference room, kitchen and two roof terraces. The main entrance is oriented towards north. Load-bearing and non-load-bearing walls are designed from aerated concrete blocks, floor slabs are from cast-in-place reinforced concrete. The building façade is insulated with ETICS. In the second part there are designed systems of heating, mechanical ventilation, cooling, lighting and use of rainwater. Third, cooling analysis of research institute AdMaS in Brno is made. The designs are drawn in AutoCAD, thermal calculations in DEKsoft.

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