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Anisokinetic dust sampling
Šenk, Daniel ; Zlevorová, Tereza (referee) ; Lachman, Jakub (advisor)
The presented thesis deals with the determination of the concentration of dust particles released during the operation of combustion boilers. The accuracy of these measurements can be affected by a number of factors. One of the main factors is the ratio between the gas velocity in the sampling probe and the gas velocity in the pipe. If this ratio is different from 1, we speak of so-called anisokinetic sampling. The CSN standards for the boilers in question prescribe limits for deviations from this value. For automatic biomass boilers, an allowable range is from 0.70 to 1.50. For values within this range, the mass concentrations of dust particles during the combustion of wood and sunflower pellets were determined by manual gravimetric method. The mass concentrations were then converted to relative measurement errors compared to reference values under isokinetic conditions. For the lower limit deviation, a relative measurement error of up to 22.9 % was determined. In the upper range, deviations from the reference values are up to 39.7 %. In this range, an underestimation of the concentration of dust particles occurs; therefore, it would be advisable to consider lowering the upper limit of the permissible isokinetic ratio in the CSN.
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Systems of energy efficient buildings
Šlampová, Kateřina ; Horák, Petr (referee) ; Počinková, Marcela (advisor)
The topic of this diploma thesis is systems of energy efficient buildings with a focus on the building envelope. The first theoretical part describes the quantities that we consider when designing the building envelope. The second half of the theoretical part is with reference to the experimental part of the thesis focused on a special type of vertical perimeter structure, namely walls with live vegetation installed from the outside of the structure. The second, practical part of this work, deals with the design of heating and hot water supply for a multifunctional building. The design is elaborated in two variants - heating by means of radiators in the first variant and in the second variant by means of floor heating for residential units of the solved building. The third part define an experiment, which had the task of comparing the measured quantities on two types of vertical perimeter structures, namely a structure with growing greenery from the outside and an identical structure only without a layer of greenery. At the same time, the task was to check the possible influence of the applied greenery on heat losses, and thus the design of the heating system.
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Systems of energy efficient buildings
Šlampová, Kateřina ; Horák, Petr (referee) ; Počinková, Marcela (advisor)
The topic of this diploma thesis is systems of energy efficient buildings with a focus on the building envelope. The first theoretical part describes the quantities that we consider when designing the building envelope. The second half of the theoretical part is with reference to the experimental part of the thesis focused on a special type of vertical perimeter structure, namely walls with live vegetation installed from the outside of the structure. The second, practical part of this work, deals with the design of heating and hot water supply for a multifunctional building. The design is elaborated in two variants - heating by means of radiators in the first variant and in the second variant by means of floor heating for residential units of the solved building. The third part define an experiment, which had the task of comparing the measured quantities on two types of vertical perimeter structures, namely a structure with growing greenery from the outside and an identical structure only without a layer of greenery. At the same time, the task was to check the possible influence of the applied greenery on heat losses, and thus the design of the heating system.
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