This thesis focuses on the methodology of determining the parameters of Peltier batteries and the theory of construction of a cooling block on the basis of obtained parameters. Gathered information is then used for design and construction of a small test chamber for laboratory purposes.

This master´s thesis is directed to an research of thermoelectric cells as power sources. It is discoursing about general properities of thermoelectric cells and their using at practical aplications in the first part. Then a heating and cooling system is designed and made for a selected type of thermoelectric cell which represents the emergency back-up power source. In the next part a DC/DC step-up converter is designed for a selected type of thermoelectric cell. This converter generates the DC load voltage 12V. The converter is controlled by PWM with a carrier frequency 50kHz.

In the last decade there is a rising interest in thermoelectric applications. Thermoelectric generators enabling the direct conversion of the heat into the electricity become attractive. This fact is caused by the demands of environmental operation and saving primary resources. Scientists intensively investigate and develop new materials and structures suitable for these applications. The efficiency of the thermoelectric conversion progressively increases. Unfortunately we have no available materials with sufficient thermoelectric properties which could provide cost-competitive price. Thermoelectric generators seem to be useable devices. For example, in case of the unused waste heat using of the thermoelectric generator can increase the overall effectiveness of the unit despite the low efficiency of the generator. This master thesis deals with the issue of the Peltier modules representing the main part of the thermoelectric generators. The physical principles and structures of the thermoelectric modules and the possibility of thermoelectric power production are described here. In the practical part of this thesis the design of the low power generator utilizing waste heat from biomass boiler Verner A 251.1 is proposed.