OPTIMAL USE OF LOW-ENTHALPY GEOTHERMAL ENERGY

Dandanes se zelo spodbuja uporaba obnovljivih virov energije za proizvodnjo električne energije. V magistrskem delu je predstavljen model hibridne elektrarne, ki za proizvodnjo električne energije uporablja tri različne OVE – geotermalno energijo, sončno energijo in lesno biomaso. Osnova je ORC sistem. Prvi vir za izkoriščanje je geotermalna energija, sončna energija in energija lesne biomase pa sta v sistemu kot vira dodatnega toplotnega toka za dogrevanje delovnega medija. Prikazan je detajlni termodinamični preračun, ki vključuje toplotne tokove in moči posameznih elementov v sistemu. Podan je termodinamični izkoristek. Izbrani so tudi elementi in naprave glede na rezultate preračuna.The use of renewable energy sources for electricity production is nowadays highly encouraged. The thesis presents a model of hybrid power plant for electricity production using three different renewable energy sources – geothermal energy, solar energy and wood biomass. The basis is the ORC process. The first source for the exploitation is geothermal energy, solar energy and wood biomass are in the system as sources of heat flow for working medium additional heating. A detailed thermodynamic calculations involving heat flows and power of individual elements in the system are shown. The thermodynamic efficiency is also given. Finally, elements and devices are chosen according to the results of the calculations