This diploma thesis deals with the issue of energy requirements for operation of indoor ski slopes. The first part is dedicated to research of snow making, cooling and construction methods of ski halls along with the examples of specific projects. In the second part, the aim was to design a ski hall with specific geometry and insulation and then define energy losses of such building. Subsequently, all related energy flows were calculated, which led to the determination of the required cooling capacity. Based on this, the cooling cycle was calculated and the overall electricity demand for the operation of the ski hall during the year was set. In the third part, three options for covering electricity needs are evaluated and at the same time they are compared in terms of financial costs during the year.

The topic of the thesis regards of problems of compilation the model of existing fan-cooler systems of VVER440/V213 NPP. These systems can be operated not only normal operation conditions but also during abnormal and accidental operation of the plant, which are significantly different from those operating conditions for which were systems dedicated and designed. An advanced model, compiled as one of the subjects of this thesis, capable to predict behaviour of these systems during accidental conditions of the plant, is described within this paper. The advanced model is a part of LEAKBOX model. LEAKBOX model represents a superordinated program dedicated to modelling overall VVER 440/V213 containment response during accidental conditions of the plant focusing onto small coolant leakage in to the containment.

Progress in development of modern LEDs, their long lifetime and high luminous efficacy predetermine them for usage in lighting systems. This master's thesis examines possibilities of application of LEDs in luminaires, parameters of diodes and problems, which can appear in construction of luminaire with LED lighting source. In the practical part of this thesis a luminaire is designed, capable of illuminating traffic signs, vertical surfaces, billboards and fasades. By standards required parameters of a lighting system and adaptability of application must be considered in complex predesign. Simulations of lighting scene, created in special computer software, measurements of optical point’s parameters and construction of real luminaire model using high quality CREE LEDs, are included in analysis of the problem. Parameters of the luminaire were proved by measurements of product’s attributes at light laboratory. There are also some suggestions for improvement and further development of the product.

The Master´s thesis is dealing with water-cooled condensers and is splitted into three main parts. The first section provides general knowledge about condensers and heat exchangers, including the basic information of hydrophobic surfaces. These surfaces were used during verifying the impact of hydrophobicity on the heat exchange in water steam. The second section describes an experimental testing. It shows the difference between hydrophobic and nonhydrophobic surfaces and their impact on the heat exchange. The third and the last part of this thesis is design and calculation of water-cooled condenser. The design of the condenser is supported by drawings placed in attachement.

The thesis deals with the analysis of the properties of the external and internal environment of the buildings, the possibilities of heating and cooling. The emphasis is mainly on the energy intensity and the impact of weather conditions on the building temperature during the year. The model created by UPPAAL SMC describes the behavior of heating and cooling during the year and identifies the energy demand of the given building. The building model itself can be partially modified using the built-in user interface.

This thesis discusses the optical diagnostics of electrical motor parts using a 3D scanner. It describes the construction of electrical induction motors, their heat losses, cooling and refrigeration systems that may be used by such motors. It approaches the possibilities of heat recording and briefly explains the 3D scanner’s principal. It also introduces the simulation program ANSYS which uses the finite element method. This thesis shows the post processing of the digitalized object and the simulations and compares the simulation and measurement results. The final part is devoted to the analysis of the obtained results.