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Demand controlled ventilation in buildings
Černík, Václav ; Kolbábek, Antonín (referee) ; Charvát, Pavel (advisor)
This bachelor’s thesis deals with different methods of building’s ventilation control, especially with the focus on ventilation controlled by pollutant concentration. In the first part of the thesis, some concepts regarding ventilation and some pollutant’s description are given. In the second part, the most used pollutant detectors are mentioned. Next, various ventilation control strategies are explained, along with their advantages and disadvantages. In the last part, a real-life example of ventilation control is given.
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Faktory ovlivňující kvalitu vnitřního pobytového prostředí z hlediska zatížení interiéru těkavými organickými látkami (VOCs)
Málková, Andrea
This thesis is divided into two parts, a theoretical and a practical. The theoretical part contains six chapters and it is written in the form of a literature review. In these chapters, there are gradually characterized the features of indoor environmental quality and indoor air quality, which are associated with volatile organic compounds (VOCs) and their sources. Then following chapter deals with the effects of VOCs on human health and the possibilities of how to avoid these influences in the apartment interior. Among other things, the literary review deals with outdoor air quality in the area of the examined objects as one of the factors that influence the indoor air quality. The last chapter is devoted to legislation that relates to the researched topic. Main, practical part of the thesis id divided into five chapters. It deals with the measurement of VOCs in four different apartments in a period of three seasons (fall, winter, spring). These chapters describe the assessed objects and the corresponding measurement methodology used together with the devices, by which the measuring and subsequent analysis of the interior load VOCSs were carried out. The last chapter of the practical section discusses the results of measurements and their interpretation of the word.
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Epidemiological Situation at a Pharmacy.
SCHNEIDEROVÁ, Kateřina
Airborne respiratory infections are among the most frequent diseases. Airborne respiratory infections afflict both children and adults; they can pose a potential threat to persons already suffering from another primary illness or those with impaired immunity. A disease-carrying person transpires pathogens through droplets or biological aerosol when coughing, sneezing or talking. Such ways of illness transmission pose a risk of nosocomial infection dissemination in medical facilities. The objective of this Bachelor's thesis is to quantify microbiological pollution in the indoor environment and evaluate the negative influence, if any, of bacterial contamination on the health of patients occurring at the pharmacy. The laboratory work part of the thesis aimed at the sampling, processing and identification of airborne infection agents at a medical facility (pharmacy) in the period of May 2018 to February 2019. The sampling method used was the method of passive collection (platform settling method). The principle of this method is that microorganisms present in the air settle over blood agar in a Petri dish. The factors evaluated in analyzing microbiological pollution of indoor air included the influences of air temperature and humidity at the pharmacy, as well as the number of persons present at the time of taking the sample. Pursuant to Decree n. 6/2003, which sets hygienic limits for biological indicators in indoor environments of frequented premises in medical facilities, the maximum limit is 500 CFU/m3 (CFU is a unit used to estimate the count of viable bacteria). The counts found during the review period have never reached the limit. The values measured showed that there is a certain degree of positive correlation between the air temperature, air humidity and CFU count per dish. Comparisons between the number of patients and the CFU count per dish demonstrated no distinct cross-correlation between the two factors. As far as the representations of individual groups of identified microorganisms in the samples are concerned, the G+ Staphylococcus spp. group takes a prevalent share, counting for more than 50 % of microorganisms in the samples, and as much as 75 % in some samples. G- rods follow, with a share of as much as 46 %, further followed by G+ diplococcus and tetracoccus bacteria with a share of as much as 43 %. Of the focus pathogens, the occurrence of Staphylococcus aureus and Streptococcus pyogenes were confirmed. The results of my bachelor's thesis did not confirm any overlimit microbiological pollution of the pharmacy indoor air or a significant occurrence of bacterial respiration infection agents. In conclusion, in terms of bacterial contagion, indoor air at pharmacies can be seen as a low risk.
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Stanovení emisí těkavých organických látek z materiálů používaných pro výrobu nábytku
Šenkyříková, Tereza
The diploma thesis deals with the VOC substances and their impact on the indoor environment, health of human and environment. The work deals with the assessment of the emissions volatile organic compounds emit from materials used for the production of furniture in dependence on time. Focuses primarily on the most used construction material for production of furniture from particle board. The work assesses emitted substances from chosen glues/coating substances used for veneering/surface finishing of element.
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Characterization of indoor air in health care buildings
Hladíková, Dita ; Braniš, Martin (advisor) ; Holcátová, Ivana (referee)
Hospitals and healthcare facilities are very specific times of microenvironments, which requiring monitoring air quality. People who use healthcare facilities are due to a weakened immune system very sensitive to air quality. Acceptable indoor air quality in healthcare facilities may have adverse effects on job performance at the personnel and their errors may have very serious consequences. The aim of this paper is to evaluate the main components of the inner microclimate (temperature and relative air humidity) and concentrations of carbon dioxide in the environment of selected healthcare facilities in the Czech Republic and to compare the results with the related legislation. The measurements were carried out in two hospitals and nine private medical offices from December 2011 to March 2013. The results showed that the values of microclimate factors and the concentration of carbon dioxide in the environment of patient rooms were different in cold and warm part of the year. In the patient rooms the levels of relative humidity diverged from the legal requirements mostly in winter - while those of temperature in summer. The concentration of carbon dioxide was affected by the occupancy rate and the size of the rooms. Air quality in the operating theater was primarily characterized by very low relative...
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Demand controlled ventilation in buildings
Černík, Václav ; Kolbábek, Antonín (referee) ; Charvát, Pavel (advisor)
This bachelor’s thesis deals with different methods of building’s ventilation control, especially with the focus on ventilation controlled by pollutant concentration. In the first part of the thesis, some concepts regarding ventilation and some pollutant’s description are given. In the second part, the most used pollutant detectors are mentioned. Next, various ventilation control strategies are explained, along with their advantages and disadvantages. In the last part, a real-life example of ventilation control is given.
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Faktory ovlivňující kvalitu vnitřního pobytového prostředí z hlediska zatížení interiéru těkavými organickými látkami (VOCs)
Málková, Andrea
This thesis is divided into two parts, a theoretical and a practical. The theoretical part contains six chapters and it is written in the form of a literature review. In these chapters, there are gradually characterized the features of indoor environmental quality and indoor air quality, which are associated with volatile organic compounds (VOCs) and their sources. Then following chapter deals with the effects of VOCs on human health and the possibilities of how to avoid these influences in the apartment interior. Among other things, the literary review deals with outdoor air quality in the area of the examined objects as one of the factors that influence the indoor air quality. The last chapter is devoted to legislation that relates to the researched topic. Main, practical part of the thesis id divided into five chapters. It deals with the measurement of VOCs in four different apartments in a period of three seasons (fall, winter, spring). These chapters describe the assessed objects and the corresponding measurement methodology used together with the devices, by which the measuring and subsequent analysis of the interior load VOCSs were carried out. The last chapter of the practical section discusses the results of measurements and their interpretation of the word.
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