RENEWABLE ENERGY SOURCES IN THE FUNCTION OF HEATING AND COOLING LOW-ENERGY BUILDINGS IN CONTINENTAL AREA

U diplomskom radu opisan je projekt sustava grijanja i hlađenja te pripreme potrošne tople vode jedne niskoenergetske građevine. Građevina je obiteljska kuća na području grada Bjelovara. Sustav je projektiran tako da iskorištava dobrobiti obnovljivih izvora energije. Prvi dio rada prikazuje projekcije razvoja obnovljivih izvora energije i planove za njeno iskorištavanje. Također opisani su pojedini obnovljivi izvori energije te način njihova iskorištavanja. Glavni dio rada odnosi se na proračun komponenti sustava grijanja, halđenja i pripreme potrošne tople vode promatrane demo građevine. Za potrebe proračuna prvo su definirani osnovni gradivni elementi objekta, te utvrđena njihova termofizikalna svojstva. Nakon toga su proračunom utvrđene karakterisitke sustava u vidu njegovog učina i proizvodnje energije. Utvrđene karakteristike sustava služe za odabir njegovih komponenti čije su glavne osobine i parametri prikazani u ovom dijelu rada. Zadnji dio rada odnosi se na proračun potrošnje pogonskog energenta, te usporedbu promatranog sustava sa jednim konvencionalnim sustavom. Usporedba je izvšena na temelju potrošnje prirodnog plina kao pogonskog energenta, te na bazi emisije CO2 ta dva sustava.The master thesis describes the project of heating and cooling systems and the preparation of hot water for a low-energy building. The building is a family house on the territory of the town of Bjelovar. The system is designed to take advantage of the benefits of renewable energy sources. The first part of the theses presents projections for the development of renewable energy sources and plans for its exploitation. Some renewable sources and their use are also described. The main part of the work relates to the calculation of the components of the heating, cooling system and system for preparation of hot water of the observed demo structure. For the needs of the budget, the basic building elements of the building are first defined, and their thermophysical properties are determined. Thereafter, the characteristics of the system in terms of its power and the produced energy are determined by the budget. The system characteristics identified serve to select its components whose main features and parameters are shown in this section. The last part deals with the budget of the power plant consumption and the comparison of the observed system with one conventional system. The comparison was based on the consumption of natural gas, and on the CO2 emissions of these two systems