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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Experimental assessment of distribution elements in air conditioning
 Novotný, Jan ; Blasinski, Petr (referee) ; Rubina, Aleš (advisor)
The subject of this thesis is the analysis of the ventilation of the locker rooms in a hockey hall. The thesis is divided into three parts: theoretical computational part, experimental measurements and assessment of the observed data. In the theoretical part the problems of indoor microclimate, air distribution, diffusor and their flow patterns are discussed in detail. Furthermore, the procedure of using CFD simulations is mentioned. In the computational part, the thesis focuses on the optimization of the diffusors in a hockey locker room using CFD simulations. Four variants of implementation are addressed, including the original design. These variants are then compared in terms of air velocity at the entrance to the residence zone and the age of the air in the selected hockey dressing room. Finally, the presented optimal ventilation option is then evaluated. Experimental measurements are focused on the verification of the CFD simulations. The ability of the elements to provide thermal comfort is also investigated.
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Physical modelling axisymmetric diffusors by plane models
 Uruba, Václav
Diffusers with axisymmetric geometry are used very often in technical applications, they are characterized by circular cross-section along the flow axis. Such geometry is not suitable for application of optical methods, so the plane model with rectangular cross-section is used instead very often. However the flow inside such model could be significantly different as for velocity and pressure fields. The physical similarity of 1D flow in axisymmetric diffusers and plane models will be studied in details. The plane model opening angle is suggested to optimize velocity and pressure distributions in the model.
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