In order to reliably test thermoelectric modules, it is necessary to have a adequate measuring apparatus. The presented diploma thesis deals with the design of measuring apparatus capable of performing both long-term testing of thermoelectric modules at a constant high temperature and thermal cycling extension has been designed. Both types can be changed in a short time.

This diploma thesis deals with available technologies when designing autonomous house. Theoretical part of this thesis shows and presents options for gaining energy from renewable resources and options for energy storage. The practical part of the thesis is focused on designing partly autonomous system for model house using renewable resources. In the thesis are three options of gainig energy for the house, from which is chosen the best option.

This master´s thesis deals with the design of a steam turbine for a small nuclear power plant with a power of 50 MWe. In the first part of the work is proposed thermal and mass balance. The turbine has seven unregulated steam extractions, which are divided: two are for high-pressure feedwater heater, four are for low-pressure condensate heater and one is for degassing. The next chapter deals with the calculation of the regulation stage which is designed like an A-wheel and here is also strength control. Then, a pre-design and a detailed design of the stage part with the reaction blading. The stage part is consisted of eight cones with a total number of 27 stages. In the following chapters, is calculated the compensating piston, seals system and bearings. In the end, is made the consumption diagram. Part of the work is a conceptual drawing of a steam turbine section. The resulting steam turbine has a power output 50,197 MW and an internal thermodynamic efficiency of 73,9 %.

This diploma thesis was aimed at study of the effect of various gaseous extinguishing media in an environment of increased temperature on the paper and its properties. Paper samples were exposed to elevated temperature in air, CO2 gas and gas mixtures of N2:Ar (1:1). The impact of conditions on the mechanical, chemical and optical properties of paper has been studied after exposure of the paper by extinguishing media under elevated temperature. The change of properties was determined immediately after exposure of samples under simultaneous conditions of fire, further one was determined for samples exposed to conditions of dry and wet aging. As a reference sample was used crude paper. Values of elasticity modulus, strength tensile, tearing resistance, the work needed for break tension, the total color difference and pH of samples have been determined. The results showed that every external influence causes at least some change in mechanical, optical and chemical properties such as increased temperature, the effect of extinguishing media or ageing of paper. The gas mixture N2:Ar (1:1) had the smallest influence on the sample paper, which was worked. Thus this gas mixture could be the best choice for the application in archive environments.

The aim of this thessis is heat treatment and choice of material for Woodworking optimalization. Industrial Knives in conjunction with company Pilana Tools Knives. Knives of this company are used in different parts of the world, among others in northern states too, where are working in extreme conditions about temperature low below of freezing point. That’s why was tested many samples in another working conditions.

VACULA Jakub: Optimization of plasma cutting parameters Diploma thesis of the attendance engineer´s study – Mechanical Engineering, specialization Machinery Technology. Academic year 2008/2009. Faculty of Mechanical Engineering of University of Technology in Brno, Institute of the Manufacturing Technology. The Diploma thesis is concerned with the thermal division of a material, concretely by the plasma cutting. It monitors the operational parameters influence of this process to the result quality of cut and the purpose is to optimize these parameters from the qualitative standpoint. The experiment was executed at the plasma cutting equipment Fine Focus 800 of the company KJELLBERG with the utilization of the material S 690 QL. On the base of the literary study of the thermal division of the materials problems it was also described the comparison of the plasma cutting with the method of the division of materials by the oxygen, both from the point of view of the quality, and from the economical point of view.

Graduation theses consist of two parts. The first one, theoretical is focused on piece of knowledge regarding nodular iron history, its mechanical properties, chemistry, production and heat treatment. Theoretical part also includes information relating to graphite and white irons that relate closely with nodular iron. Important chapter is description of isothermal refining which is the subject of these theses. The second, experimental part is focused on isothermal refining of nodular iron casting. Description of the casting introduces this section, material specification, production and application. Following chapters describe preliminary conditions for isothermal refining that is applied on every single specimen made of the casting. These specimens have been tested mechanically. Optimal procedure of isothermal refining is applied on whole the casting and characterized final mechanicals. Final mechanical properties after casting isothermal refining has been analyzed and confronted with literature.

This master`s thesis deals with low-temperature heating that employs a heat pump. The introduction gives reasons for utilization of the renewable heat sources for heating. The next part focuses on a practical application of renewables on the heating of a family house. It covers a detailed description of the building and the designed heating system which includes: the calculation of thermal losses, design of the low-temperature boiler, heat pump, safety devices, heating elements, sizing and control of the system. The last part is devoted to the assessment of the system performance.

Diploma thesis is specialized in an engineering design of mobile equipment for the surface hardening. At first, overview of methods and instruments for surface hardening is introduced. Solution to the thesis is a proposial for any eventual options of contruction, appreciation and choice of a suitable option. Subsequently, particular parts of the equipment with design and check calculations are explicated. Constructional tasks were done in the SolidWorks program. Finally, an economical analysis is described.

Diploma thesis is focused on laser hardening by Yb:YAG fiber laser. Experiment is based on hardening of testing pieces made of steel 12 050 with different parameters of distance and movement speed of laser head. In theoretical part are described principle of laser, types of lasers, laser technology in industry, types of lasers, types of hardening and types of hardness measuring. In practical part are firstly evaluated macrostructure and microstructure photos and Vickers hardness. In conclusion are analyzed the results of laser hardening and after that the best laser hardening parameters were selected.