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Simple FITkit Based Weather-Station
Podivínský, Jakub ; Mičulka, Lukáš (referee) ; Strnadel, Josef (advisor)
In this bachelor thesis, the design and implementation of FITkit-based home weather-station is presented. In the thesis, various methods of measuring meteorological quantities are detailed and discussed together with advanteges and disadvantages of common electronic sensor parameters. Then, weather forecast methods are classified and principle of a simple weather-forecast algorithm based on the atmospheric pressure measurement and analysis is described and discussed according to its realization by the means of the FITkit platform. At the end of the thesis, design and realization of an additional hardware needed to operate the station on basis of FITkit is described.
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CFD simulation of air flow inside a car cabin
Kučera, Cyril ; Elcner, Jakub (referee) ; Pokorný, Jan (advisor)
The diploma thesis deals with CFD simulating the air flow inside the car using the numerical calculation program Star-CCM+. The aim of the thesis was to prepare 3D geometry, resp. realistic model of the real car, preparing boundary conditions including material properties, simulating the steady state of the environment and evaluating the speed and temperature of the car cabin. The paper presents the results of the temperature distribution and air velocities in the cabin during the winter, spring and summer conditions in HVAC on and HVAC off modes. The monitored air temperatures and surface temperatures of the car parts are compared with the measured data. The average difference between simulation and measurement was at air temperatures of 2.3 °C and surface temperatures of 3.4 °C.
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Environment parameters monitoring
Richter, Tomáš ; Ing. Jan Janečka, Ph.D. ABB s.r.o. Brno (referee) ; Vdoleček, František (advisor)
This bachelor's thesis analyzes available options, methods and resources of monitoring environmental parameters. It focuses on environmental parameters, which can affect accuracy of measurement results. Practical work deals with design and implementation of model, which allows monitor environmental parameters at laboratory A4/603. Implemented model accesses actual and historical values of environmental parameters through web applications. The measured values from laboratory can be used for correction of technical measurement results done in this room.
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Device Proposal for Measurement and Evaluation of Environmental Thermal State
Janečka, Jan ; Němeček, Pavel (referee) ; Kratochvíl, Zdeněk (referee) ; Vdoleček, František (advisor)
The thesis deals with evaluation of the environmental thermal state in closed rooms with people inside the room. The achievement of thermal comfort is related to thermal balance of human body. People are producing heat during their work, which has to be carried away from the body to surrounding area by radiation, convection, conduction, respiration and evaporation. The intensity of heat removal is influenced by environmental parameters, especially by air temperature, mean radiant temperature, air velocity and humidity. Personal factors as energy expenditure of human body and clothing resistance are influencing the intensity of heat removal as well. People are able to influence the thermal comfort by their behaviour in given environment, appropriate clothing and regulation of basic environmental parameters. CSN EN ISO 7730 standard states that environmental parameters should be estimated or measured. The operative temperature is than evaluated from collected data. This operative temperature is defined as the temperature of black enclosed area where the human body will be by convection and radiation sharing the same amount of heat as in real inconsistent environment. Nowadays on the market there is no cheap solution for sensor which is able to evaluate the operating temperature and could be used in buildings. There are a lot of professional sensors which have very high accuracy, but are very expensive. Therefore are mainly used only for research or for single and exceptional measurement of environmental thermal state in rooms. The thesis is therefore focused on proposal of suitable (compact) operative temperature sensor assembled according to valid regulations and standards. Emphasis is placed mainly on the sensor price together with guarantee of sufficient accuracy. The proposed sensor is providing information to control system which is than able to adjust the parameters of environment using appropriate way based on relevant requirements. Here is some space for energy savings due to possible continuous measurement and evaluation of environmental thermal state in different rooms. Therefore, during continuous measurement no unnecessary rooms overheating in winter as well as unreasonable cooling in summer should occur. This research and solution is than reflected in reduction of energy consumption used for building operation and subsequently reduction of the pollutants production. This issue is being watched with increasing interest. Another advantage is that whole system is able to work autonomously without human intervention. People no longer have to continuously adjust air temperature because the control system is able to evaluate the most appropriate adjustments based on objective data obtained from the sensor. The thesis includes subsequent verification of proposed sensor as well as the definition of sensor technical parameters including analysis of measurement uncertainties.
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Návrh a realizace mobilní meteostanice
CHYTRA, Petr
This diploma thesis deals with the design and implementation of a portable weather station which allows you to measure air temperature, relative humidity, atmospheric pressure and especially the concentration of suspended particles in the air on which the work is focused. The portable weather station must be compact and have its own power supply. Part of the work is also the implementation of own measurements in selected localities.
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Proposal of project based education on the topic of air-conditioning function of vegetation in the landscape
ŽEJDL, Matěj
As part of this work, the role of the regional vegetation in the water cycle was designed in the project of education. The project was made in a try of the praxis. A part of the education is measuring air temperature and the relative air humidity in the different habitats. Due to this measuring primary school students can see differences between habitats and they can think about the meaning of the project education in the role of the differences in the vegetation and in which way flora is influencing the water. The work is focused on the research of the meteorological and biological conditions suitable for education project management. Work also briefly sums the role of respondents in the Biology lessons and their knowledge of the examined topics made during the lectures. The finding of the primary school student's knowledge was done with the use of questionnaire.
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Changes of selected surface water geochemistry parameters in relation to rainfall-runoff regime
Bartůšek, Adam ; Matoušková, Milada (advisor) ; Havlíková, Petra (referee)
This work deals with the study of changes in the geochemistry of surface waters in relation to the rainfall-runoff regime and its transformation. As rainfall-runoff extremes such as long episodes of drought with low flows or, conversely, high flows caused by extreme rainfall events have been increasing in recent years, it is important to understand how these phenomena affect water quality. Therefore, the main objectives of this work are firstly a literature search on the changes in surface water geochemistry during change of climate and precipitation-runoff regime and methods that can be used to quantify these changes, and then the application of some of these methods to the analysis of selected parameters and their changes in the Klíčava catchment. In addition to some climatic characteristics and flow rates, the analysis included basic parameters of geochemistry (flow rate, water temperature), physicochemical parameters (electrolytic conductivity, pH), some nutrients (forms of nitrogen and phosporus) and indicators of organic pollution and stream cleanliness (BOD5, CODCr, TOC and dissolved oxygen). In addition, the status and evolution of concentrations of some herbicide metabolites were briefly assessed. For data analysis, e.g. box plots, Mann-Kendall test, correlation coefficients or linear...
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Sea surface temperature variability in the North Atlantic and its effect on temperature and precipitation in Europe
Kodetová, Tereza ; Pokorná, Lucie (advisor) ; Beranová, Romana (referee)
The sea surface temperature (SST) of the North Atlantic (NA) has a demonstrable impact on Europe's climate. The main purpose of this final thesis is to investigate the long-term evolution of SST in SA and to describe the influence of SST change in NA on temperatures and precipitation in Europe. For this purpose, the freely available HadISST database from the Met Office Hadley Centre Observations datasets was chosen. The study period 1980-2019 was chosen so that the data would not be affected by switching to a different measurement type or processing method, and also by the inclusion of satellite measurements. This means that the data was acquired after the start of satellite measurements, which provides a much higher quality and more comprehensive coverage of the area. The next step was to calculate the average monthly and annual SSTs in the NA area of interest. Monthly mean SSTs ranged from 2,3 řC in the coldest month of March to the highest measured mean SST of 18,5 řC in August. The average annual SST of the area of interest was 10,5 řC over the 40 years analysed. Next, monthly and annual trends were detected from 1980-2019. The trends range from -0,7 řC to 1,5 řC, but it was confirmed that the area of interest is warming in all months over the 40 year period. The final objective was to...
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