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Optimization of Cabin Environment in Small Transport Aircraft
Fišer, Jan ; Janotková, Eva (referee) ; Masaryk, Michal (referee) ; Patočka, Stanislav (referee) ; Jícha, Miroslav (advisor)
The thesis deals with design and optimization of environment in cabins of small transport aircrafts, especially in terms of thermal comfort and quality of ventilation. The design of air distribution systems and structural design were optimized and most important parts of cabin design with highest impact on the quality of thermal comfort and ventilation were identified based on literature research and experience of the author. The chosen modifications and their influence on the microclimate inside the cabin were investigated using the CFD model, which was validated by results obtained from measurements of flow and temperature fields in the cabin mock-up of small transport aircraft EV-55. Next optimizations were investigated: The type of air distribution system, The geometry of ducts of air distribution system, Thickness of thermal insulation and Emissivity of internal surfaces. Thermal comfort was assessed based on the methodology of the equivalent temperature and comfort zones diagram developed by H. O. Nilsson and for assessing the quality of ventilation the concept of based on index of the age of the air was used. Fifty cases were simulated in total and base of its results Modified mixing ventilation with original air ducts geometry have been evaluated as an optimum. The ducts geometry of Modified mixing ventilation system was suggested by author specially for the thesis. In combination with high thermal insulation of walls and high emissivity of the interior, then this system of ventilation ensures maximum thermal comfort and quality of ventilation for the investigated range of environmental and operational conditions.
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Simulation of indoor environment in a small transport aircraft cabin
Knapčík, Lukáš ; Pokorný, Jan (referee) ; Fišer, Jan (advisor)
The diploma thesis is focused on ventilation and simulation of heating in small transport aircraft EV-55 cabin. First part explains an impact of thermal environment on human health and describes restrictions and recommendations forced on inner aircraft environment. In the first part are also clarified conditions of comfortable environment and thermal comfort evaluation for passengers via PMV and PPD index. The second part contains results from simulation of aircraft cabin environment. Inlet ventilation airflow and cabin heating is simulated via simulation mean Theseus-FE 3.0. The simulation results are evaluated for thermal comfort degree and optimal cabin insulation with optimal temperature and volume flow rate of inlet air is specified.
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Optimization of Cabin Environment in Small Transport Aircraft
Fišer, Jan ; Janotková, Eva (referee) ; Masaryk, Michal (referee) ; Patočka, Stanislav (referee) ; Jícha, Miroslav (advisor)
The thesis deals with design and optimization of environment in cabins of small transport aircrafts, especially in terms of thermal comfort and quality of ventilation. The design of air distribution systems and structural design were optimized and most important parts of cabin design with highest impact on the quality of thermal comfort and ventilation were identified based on literature research and experience of the author. The chosen modifications and their influence on the microclimate inside the cabin were investigated using the CFD model, which was validated by results obtained from measurements of flow and temperature fields in the cabin mock-up of small transport aircraft EV-55. Next optimizations were investigated: The type of air distribution system, The geometry of ducts of air distribution system, Thickness of thermal insulation and Emissivity of internal surfaces. Thermal comfort was assessed based on the methodology of the equivalent temperature and comfort zones diagram developed by H. O. Nilsson and for assessing the quality of ventilation the concept of based on index of the age of the air was used. Fifty cases were simulated in total and base of its results Modified mixing ventilation with original air ducts geometry have been evaluated as an optimum. The ducts geometry of Modified mixing ventilation system was suggested by author specially for the thesis. In combination with high thermal insulation of walls and high emissivity of the interior, then this system of ventilation ensures maximum thermal comfort and quality of ventilation for the investigated range of environmental and operational conditions.
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|
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Simulation of indoor environment in a small transport aircraft cabin
Knapčík, Lukáš ; Pokorný, Jan (referee) ; Fišer, Jan (advisor)
The diploma thesis is focused on ventilation and simulation of heating in small transport aircraft EV-55 cabin. First part explains an impact of thermal environment on human health and describes restrictions and recommendations forced on inner aircraft environment. In the first part are also clarified conditions of comfortable environment and thermal comfort evaluation for passengers via PMV and PPD index. The second part contains results from simulation of aircraft cabin environment. Inlet ventilation airflow and cabin heating is simulated via simulation mean Theseus-FE 3.0. The simulation results are evaluated for thermal comfort degree and optimal cabin insulation with optimal temperature and volume flow rate of inlet air is specified.
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