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Application of an anemometric hot-wire probe to the measurement of a velocity field downstream of an automotive ventilation outlet
Šíp, Jan ; Tuhovčák, Ján (referee) ; Lízal, František (advisor)
This diploma thesis deals with the research of the flow in front of the benchmark automotive vent. Using thermoanemometry, the velocity field in the area in front of the vent was measured in detail and the intensity of the turbulence was calculated. Computational fluid dynamics of the air flow from the vent was also performed using the STAR-CCM + program. In addition, the influence of the surrounding surfaces simulating the real environment of the automobile on the air flow from the vent was investigated. The diploma thesis contains the calculation of measurement uncertainty. The purpose of this thesis is to obtain complex data on the velocity field and to use them for validation of Computational fluid dynamics.
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Design of Cooling system in family house
Jirsová, Tereza ; Šíp, Jan (referee) ; Pech, Ondřej (advisor)
The bachelor thesis is focused on the design of cooling system in family house that is intended for potential building-up. The introductory chapter deals with the most common ways of a cooling systems in a family houses, using mainly split and multi-split air conditioning units and heat pumps. The following chapter shortly describes the family house, its orientation on the land and the parameters of the building structure. In the next chapter, there is calculated the heat load for the living room and also there are the results for the other rooms that should be cooled. In the last chapter there are created two different designs of possible ways of cooling and also the financial costs for purchase, assembly, operation and revisions are compared. The first design deals with the installation of two multi-splits. In the second design, the Samsung TDM heat pump was installed. This heat pump is the first in Europe, that can operate with one outdoor unit A2W and also A2A. At the end of this thesis, there are more detailed results of heat load calculations and drawings of individual designs of cooling.
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Measurement of capture efficiency of the reinforced slot exhaust system with a workbench
Šíp, Jan ; Zaremba, Matouš (referee) ; Pech, Ondřej (advisor)
The aim of this bachelor thesis is an experimental research on the efficiency of enclose reinforced slot exhaust hood situated over a workbench in the case of different ratios of momentum flux of supplied and the exhausted air flows. Exhaustion efficiency was also measured during the situation when the exhaust hood works as a classical one, i.e. without air supplied by radial slot. The workbench is situated on the upper edge of the exhaust slot opening. For measuring of the exhaustion efficiency was used a tracer gas method, such as trace gas was used carbon dioxide. For data evaluation was used the software Surfer. In the conclusion there are processed measurement uncertainties.
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Research of Systems for Providing the Quality of the Environment in the Car Cabin
Šíp, Jan ; Kavička, František (referee) ; Volavý, Jaroslav (referee) ; Lízal, František (advisor)
Optimal conditions of indoor environmental quality, especially thermal comfort and indoor air quality, are important because they lead to the active safety of passengers. Long-term exposure to inconvenient temperatures may cause thermal stress and negatively affects the driver’s cognitive functions. These include important abilities of drivers, such as concentration, vigilance, speed of decision-making and others. The inappropriate temperature in the cabin is one of the most dangerous factors causing car crashes. Air indoor quality is negatively affected by exhaust gases or particles from tire wear, which enter the car cabin during ventilation. This can be prevented by using an air recirculation system which does not supply outside air, but it is a closed circuit. This mode, however, causes high CO2 concentration in the cabin which can lead to excessive fatigue. This thesis deals with the influence of different ventilation systems on indoor environmental quality, i. e. thermal comfort and indoor air quality. A partial factor of thermal comfort is the flow field which was investigated downstream of a benchmark automotive vent. CFD was applied to determine the flow field downstream of a vent. The results were validated by experimental data acquired by Constant Temperature Anemometry. CFD has been also used for the evaluation of the thermal comfort of three novel ventilation systems (mixing, ceiling and floor ventilation). The results were validated by experimental data acquired by thermal manikin and climate chamber. Indoor air quality has been evaluated based on the Age of Air. The analytical empirical equation by Rajaratnam can be successfully used also to determine the throw of the jet, which is favorable, especially in light of the fact that both computational methods were not very accurate in velocity decay predictions. The Large Eddy Simulation and Reynolds-averaged Navier–Stokes method are suitable for evaluating the flow field downstream of the automotive vent. The diagrams of comfort zones were evaluated for all regimes based on equivalent temperatures. The best performance in terms of the highest level of human comfort was achieved by the ceiling ventilation in the summer conditions and by the floor ventilation in the winter conditions. From the point of view of the Age of Air, the ceiling air ventilation system is the most suitable for the winter conditions. In the summer conditions the Age of Air values for individual air ventilation concepts are very similar for both interior types.
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An Out-patients? Programme for Drug Users
Šíp, Jan ; Šotolová, Eva (advisor) ; Sochůrek, Jan (referee)
Hlavním záměrem této práce bylo definovat a popsat ambulantní program pro osoby v konfliktu se zákonem a zdůraznit význam zachování kontinuity této služby a možný přínos pro klienty i veřejnost. Při popisu a nastavení služeb programu jsme vycházeli ze zkušeností z praxe a snažili se srozumitelně obsáhnou kontext a realitu, do které vstupují potenciální klienty programu. Současně jsme se v práci snažili do určité míry shrnout základní pojetí drogových služeb ve vězení, jejich vývoj a zavádění v naší republice a více popsat na konkrétním programu sdružení Sananim. Definice služeb, jejich cíle a poslání se formovalo zejména v posledních 10 letech. Tento typ služeb pro uživatele drog ve specifickém prostředí vyžaduje zejména neustálou reflexi jejího nastavení a pojetí.
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Design of Cooling system in family house
Jirsová, Tereza ; Šíp, Jan (referee) ; Pech, Ondřej (advisor)
The bachelor thesis is focused on the design of cooling system in family house that is intended for potential building-up. The introductory chapter deals with the most common ways of a cooling systems in a family houses, using mainly split and multi-split air conditioning units and heat pumps. The following chapter shortly describes the family house, its orientation on the land and the parameters of the building structure. In the next chapter, there is calculated the heat load for the living room and also there are the results for the other rooms that should be cooled. In the last chapter there are created two different designs of possible ways of cooling and also the financial costs for purchase, assembly, operation and revisions are compared. The first design deals with the installation of two multi-splits. In the second design, the Samsung TDM heat pump was installed. This heat pump is the first in Europe, that can operate with one outdoor unit A2W and also A2A. At the end of this thesis, there are more detailed results of heat load calculations and drawings of individual designs of cooling.
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Application of an anemometric hot-wire probe to the measurement of a velocity field downstream of an automotive ventilation outlet
Šíp, Jan ; Tuhovčák, Ján (referee) ; Lízal, František (advisor)
This diploma thesis deals with the research of the flow in front of the benchmark automotive vent. Using thermoanemometry, the velocity field in the area in front of the vent was measured in detail and the intensity of the turbulence was calculated. Computational fluid dynamics of the air flow from the vent was also performed using the STAR-CCM + program. In addition, the influence of the surrounding surfaces simulating the real environment of the automobile on the air flow from the vent was investigated. The diploma thesis contains the calculation of measurement uncertainty. The purpose of this thesis is to obtain complex data on the velocity field and to use them for validation of Computational fluid dynamics.
|
|
|
An Out-patients? Programme for Drug Users
Šíp, Jan ; Šotolová, Eva (advisor) ; Sochůrek, Jan (referee)
Hlavním záměrem této práce bylo definovat a popsat ambulantní program pro osoby v konfliktu se zákonem a zdůraznit význam zachování kontinuity této služby a možný přínos pro klienty i veřejnost. Při popisu a nastavení služeb programu jsme vycházeli ze zkušeností z praxe a snažili se srozumitelně obsáhnou kontext a realitu, do které vstupují potenciální klienty programu. Současně jsme se v práci snažili do určité míry shrnout základní pojetí drogových služeb ve vězení, jejich vývoj a zavádění v naší republice a více popsat na konkrétním programu sdružení Sananim. Definice služeb, jejich cíle a poslání se formovalo zejména v posledních 10 letech. Tento typ služeb pro uživatele drog ve specifickém prostředí vyžaduje zejména neustálou reflexi jejího nastavení a pojetí.
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