SELF-SUFFICIENCY OF ENERGY

Magistrska naloga opisuje izbiro in izračun ustrezne toplotne črpalke za ogrevanje laboratorija za energetiko na Fakulteti za elektrotehniko, računalništvo in informatiko na Univerzi v Mariboru. Ocenjeno je, ali s prodajo električne energije proizvedene z obstoječo 7,5 kW mikro sončno elektrarno, pokrijemo stroške porabe električne energije izračunanih toplotnih črpalk. Predstavljen je izračun toplotnih izgub zgradbe ter izračun toplotne moči, porabljene električne energije, grelnega števila, bivaletne točke, porabe kurilnega olja zaradi bivalentnega načina delovanja toplotne črpalke ter izračun stroškov investicije, porabljene energije, vzdrževanja in vračilne dobe za štiri izbrane toplotne črpalke različnih moči.This thesis describes the choice and the calculation of the heat pump when heating the Power laboratory at the Faculty of Electrical Engineering and Computer Science on University of Maribor. Furthermore, it has been estimated whether the sale of electric energy produced by our 7,5 kW solar power plant is enough to cover the costs for electric energy consumption of the heat pumps. The content represents the calculation of the building heat losses, the electric energy being used, coefficient of performance, the consumption of fuel oil due to a parallel operation of the heat pump. Furthermore, the calculation of investment costs, used-up energy, maintenance and pay-back time for chosen heat pumps of different power has been carried out and described