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Energy efficient building of kindergarten in Holubice
Čtvrtečka, Václav ; Uher, Pavel (referee) ; Blasinski, Petr (advisor)
The aim of the master project is to design a kindergarten in Holubice, Czechia. The building has three parts. First includes classrooms and auxiliary premises (locker rooms, washrooms, etc.), second technical and staff facilities and the third one includes a gym with equipment storage. The first two parts are designed using load-bearing masonry, reinforced concrete floor slab and flat roof. Gym has a load-bearing system combining masonry and structural frame covered by a semi-circular flat roof. The whole building is equipped with HVAC systems. Heating energy is supplied by two condensing gas boilers. Air quality will be maintained by an air conditioning system. Photovoltaic panels are placed on the roof to support electricity. Rainwater will be collected in accumulation tanks and further used for flushing on the toilets and garden irrigation. The project was developed using AutoCAD (drawings) and Revit. The secondary task of the work is an extensive measurement of the CO2 concentration in a room with forced ventilation. The aim is to combine automatic regulation of forced ventilation, depending on the concentration of CO2. The result of such regulation is higher air comfort, service life of individual HVAC members and saving electricity.
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CO2 Sources and Emission Trading System
Valentová, Helena ; Sitek, Tomáš (referee) ; Elbl, Patrik (advisor)
This thesis deals with issues of carbon dioxide emissions, its sources and legislation related to emission trading. The first part of the thesis provides basic information about carbon dioxide and its production. The second part summarizes sectors that emit the most carbon dioxide. The last part describes the international legislation related to emission allowances and carbon trading.
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Ventilation of a primary school
Urban, Erik ; Bahr,, Josef (referee) ; Šikula, Ondřej (advisor)
The bachelor thesis addresses the first part to the microclimate in school buildings. The second part concerns the proposals of forced equal pressure ventilation of single-storey primary school. In the third part, the technical documentation of the proposed ventilation equipment is processed.
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Energy efficient building systems
Červený, Miloš ; Horká, Lucie (referee) ; Počinková, Marcela (advisor)
The first part of the thesis deals with the issue of indoor climate in school buildings. The second part deals with the design of the heating system in the extension of the primary school, including the design of the source and the reconstruction of the source for the existing building in a variant solution. The last part of the thesis is devoted to experimental measurement of indoor air quality in elementary school.
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Ventilation and cooling system for an apartment in block of flats
Uřičář, Filip ; Fišer, Jan (referee) ; Hejčík, Jiří (advisor)
This Master’s Thesis deals with the design of ventilation and cooling of an under roof flat in a tenement building, built in the 1980s, and consists of five main parts. Within the first main part, the thesis is dedicated to the research of the current state of knowledge in the area ofventilation and cooling of residential premises, secondly, there is a detailed description of a particular flat, thirdly, the calculation for the optimal design of ventilation and cooling are made and, in the fourth part, suggested solutions are proposed with the following evaluation of them including the overall summary. The design of ventilation and cooling was carried out according to the design procedures with respect to the relevant standards and optimized to achieve the desired effect with respect to the requirements of the owner of a housing unit. As a solution, the ventilation of a flat by the Jablotron Futura´s ventilating unit and three variants of a flat cooling were proposed. After the evaluation of all cooling variants, the Sinclair´s multisplit system of cooling was chosen as the most suitable one.
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Aircondition in school building
Hanák, Pavel ; Blasinski, Petr (referee) ; Rubinová, Olga (advisor)
The first part of the bachelor thesis deals with the issue of ventilation at schools. The second part deals with the design of air-conditioning for the first and second floor of the school buil-ding. The last part deals with the documentation of these air-conditioning equipment.
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Carbon sequestration by forest ecosystems in canging climate.
Hlaváčková, Lucie ; Lhotáková, Zuzana (advisor) ; Urban, Otmar (referee)
The global carbon cycle is in the focus of the scientists' interest, because understanding carbon sinks and their relationships can show the solutions of problems related with increasing CO2 concentration in the atmosphere in the future. I focused on the role of forests ecosystems in this carbon cycle. All forests cover almost one third of the Earth's land area. By photosynthesis they bind big part of atmospheric carbon to their biomass. Sink strength of forest can differ according to the type of biome, forest stand age and actual climatic conditions. Forest biomes can be generally divided according to the latitude to three groups: tropical forest biomes, temperate forests and boreal forests. The size of carbon stock decreases in this order. Other parameters, such as net primary production and respiration differ in dependence on the particular ecosystem. Tropical rain forests represent great carbon stock, but their deforestation causes massive C emissions back to the atmosphere. Boreal forests aren't considered as important carbon sink, but they influence local climate. Some speculations can also appear about the old forests. It is possible to find authors, who claims, that old forests are no more carbon sinks, so that their carbon balance is neutral. Many surveys prove that they bind less carbon...
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Mesophyll CO2 conductance in consequence with the leaf anatomy and environmental factors.
Malcová, Kateřina ; Lhotáková, Zuzana (advisor) ; Nátr, Lubomír (referee)
The CO2 diffusion pathway from the atmosphere surrounding the leaf to the chloroplast stroma is composed of several parts, where each part poses certain resistance to the CO2 flux. The CO2 diffusion from the sub-stomatal cavities to the stroma is limited due to mesophyll conductance (gm), which includes CO2 movement in gas, liquid and lipid phases. The mesophyll conductance is influenced by factors that are both internal (e.g. leaf anatomy and leaf age) and external (e.g. irradiance, temperature). Internal factors exhibit rather long-term responses of gm, while external factors are involved in short-term changes. For these rapid changes are probably responsible aquaporins. gm significantly influences the rate of net photosynthesis, almost in the same range as a stomatal conductance does. The limitation of photosynthesis given by mesophyll conductance is not fixed and varies among species and plant functional groups. Due to continual increase of CO2 concentration in the atmosphere, variability in gm can lead to enhanced competitive potencial of some plant species.
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How and why we can estimate atmospheric CO2 concentration from stomatal density?
Horská, Jana ; Lhotáková, Zuzana (advisor) ; Kutík, Jaromír (referee)
The atmospheric carbon dioxide concentration have always been fluctuating. In the past [CO2] did not ever increase as quickly as in the last 200 years and apparently human activities such as fosil fuel burnig conribute significantly to this increase. Changes in stomatal frequency as a reaction on changes in [CO2] were observed on several species of living plants. It leads to investigation of stomatal fequency of herbarium samples and fossil plants. These estimates of stomatal frequency were consequently used to estimate levels of atmospheric [CO2] in the past. This study describes behavior of stomata in variable [CO2] and summarizes influence of environmental factors on stomatal patterning. The differences in responses between groups of plants of different evolutionary origin are considered. The advantages and disadvantages of selected stomatal parameters are discussed considering their suitability as tools for [CO2] estimate in the past.
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