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Development and control of ventilating turbines
Ondra, Martin ; Malach, František (referee) ; Malášek, Jiří (advisor)
This master´s thesis will discuss the mechanical regulation of suction of ventilation turbines. There were designed and described three methods of mechanical regulation in this work. It is a regulation by half-valve, quarter-valve and so-called whirling turbine. Then the calculation of the auxiliary fan was included. The resulting mechanical regulation of this work permit, with high winds, restricting the flow of exhaust air without using electricity. Thanks to this there are saving overall cost of running ventilation turbines and reducing heat loss of industrial and commercial buildings.
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Development of ventilating turbines
Křupka, Jiří ; Malach, František (referee) ; Malášek, Jiří (advisor)
This Master thesis solves a construction development of alternative modular mechanical systems for ventilation turbines. A research part of the thesis deals with the issues of transported medium (air) and ventilation, as well as functions, designs of ventilation turbines, and finally it provides an overview of ventilation turbines produced by manufacturers worldwide; these are used for ventilation of residential, commercial, industrial or agricultural structures using the natural or hybrid ventilation. A construction - design part is focused on creating 3D models of selected alternative modular adjustable ventilation turbines according to the data provided by the thesis supervisor and then on establishing a system for calculating the shapes of blades relative to the airflow for additional axial fan of ventilation turbines. For this purpose, a customized software application VENTILATOR (GUI) was developed to allow a flexible change of input calculation parameters and thus a fast modification of the curve shape in the 3D model of the axial fan blade.
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Installations in the draft tube of the swirl turbine
Kilian, Ondřej ; Rudolf, Pavel (referee) ; Haluza, Miloslav (advisor)
Diploma thesis deals with design and exploration of installation in the draft tube of the swirl turbine. Use of the draft tube is defined in the first part, with illustration of energetical gain and efficiency of draft tube. Further the suitable shape of draft tube is studied by CFD computing. Design, research and evaluation of installation in the draft tube are solved in the main part.
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Turbine Housing of Turbocharger VNT with Separated Pulses in Exhaust Manifold
Polášek, Jan ; Doman, Jozef (referee) ; Novotný, Pavel (advisor)
This master thesis deals with the design of the turbine housing of turbocharger VNT for supplying separated pressure pulses from the exhaust manifold. Subsequently, the work includes strength analysis of the designed turbine housing. The aim of the thesis is to create components for the supply of separate pressure pulses as close as possible to the turbine. Furthermore, the modification of the existing turbine housing and the assessment of the functionality of the VNT mechanism after this modification and strength analysis. The final aim of this thesis is the creation of 2D and 3D technical documentation of newly designed and modified parts.
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Hydraulic solution of the swirl turbine for locality of Rosenauer mill
Pavlíček, Tomáš ; Veselý, Jindřich (referee) ; Haluza, Miloslav (advisor)
This thesis focuses on the design of a swirl turbine for the site of Rosenauer Mill, where the gross hydraulic head HB is 1 m and the flow rate is Q is 1.6 m3/s. The beginning of the work is dedicated to microturbines and explains why a swirl turbine is suitable for this location. The procedure applied for developing the hydraulically active surfaces of the turbine is then presented. Firstly the design of the blades is based on analytical formulas, which are further refined using the CFX Ansys program. The turbine is closely affected by the inlet and draft tube, therefore their design is also included in this thesis. The hydraulic calculations yield the resulting parameters and characteristics of the designed turbine, calculated from the entire assembly using CFD computations. The final section of the work is devoted to the design of main structural components such as the gear, shaft, and bearings. The hydraulic design developed in this thesis serves as the basis for implementing the swirl turbine and constructing a small hydraulic power plant at the Rosenauer Mill.
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Design of wind turbine blade
Plhal, Matěj ; Linda, Jakub (referee) ; Škorpík, Jiří (advisor)
Master thesis describes the design of a wind turbine blade. In the theoretical part it focuses on a general research of wind energy and the design of wind power plant as a whole. In the practical part, the thesis focuses on the aerodynamic design of the blade, from determining the wind speed at the location to selecting the blade profile and its resulting characteristics. The following section provides a review of blade constructions, including the materials used and the blade's own structure. Furthermore, possible methods of blade manufacturing are described with a simplified manufacturing process of the proposed blade. The design also considers the transport of the blade from the manufacturing site to the installation site and therefore possible solutions are given, both in design and transport.
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Influence of compensatory mechanisms arising from violin playing using the DNS method
Hryzlíková, Eliška ; Oplatková, Lenka (advisor) ; Pelíšková, Pavlína (referee)
This thesis investigates compensatory mechanisms arising from playing the violin. It summarizes the existing literature on the topic of the influence of violin playing on the posture of violinists and proposes a compensatory exercise according to the DNS method. The theoretical part describes the "ideal" position for violin playing, the effect of ergonomic aids, kinesiology of playing, anatomy of the shoulder girdle, and finally the compensatory mechanisms stemming from holding and playing the violin while sitting and connected health problems. The experimental part presents the results of case studies of 8 non-professional violin players aged from 18 to 30 years, evaluation of their posture and musculoskeletal disorders, and the proposed compensatory exercise according to the DNS method. The anamnestic data were obtained through a survey and the health condition of the musculoskeletal system is investigated using a kinesiological examination (inspection and palpation, anthropometric measurements, and specific tests for deep stabilizing system and scapula). Inspection and palpation measurement cannot be objectively measured and therefore the obtained measurements serve only as a relative guide for the evaluation. The greatest muscle load is generally in the areas of cervical spine and shoulder...
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