1492316899

[7]    Nowak W., Borsukiewicz-Gozdur A., Stachel A.: Ocena efektywności pracy hybrydowej elektrowni z ORC zasilanej parą wodną z kotła opalanego biomasą. Rynek Energii 2008, nr 5.

[8]    PN-82/B-02403, Temperatury obliczeniowe zewnętrzne,

[9]    REFPROP - Reference Fluid Thermodynamic and Transport Properties, version 7.0.

[10]    Stachel A., Kaczmarek R.: Porównanie i ocena efektywności pracy trzech systemów wykorzystania energii zasilanych z poziomego wymiennika geotermicznego. II Kongres Geotermalny, Bukowina Tatrzańska, 22-26.09.2009. Materiały konferencyjne CD.

[11]    Szargut J., Ziębik A.: Podstawy energetyki cieplnej, PWN, Warszawa 1993

[12]    Wolff H., Schmidt S., Molier F., Legarth B., Oppelt J., Treviranus J.: Geothermische Stromerzeugung. Projekt BMU - ZIP 0327506, Status-Quo, Juni 2002, Vortrag, Symposium „Geothermische Stromerzeu-gung“, Landau 20.-21. Juni 2002.

[13]    Wolff H., Molier F., Besser T., Schmidt S., Oppelt J., Treviranus J.: Ansatze fortschrittlichen Bohr- und Komplettierungstechnik fur die Errichtung eines Untertraging Geschlossenen Geothermischen Warmetau-scher. Projekt BMU - ZIP 0327506. 20 Jahre Tiefe Geothermie in Deutschland, 7. Geothermische Fachta-gung, 06.-08. November 2002 in Waren (Muritz).

EVALUATION OF UTILIZATION OF A GEOTHERMIC ENERGY IN HEAT AND HEAT-POWER PLANT

Key words: geothermie energy, utilization of geothermie energy, geothermie heat exchanger, underground closed-loop heat exchanger, geothermie heat and heat-power plants

Summary. In the paper a concept of construction of a heat and heat-power plant supplied with heat from a geothermal heat exchanger has been presented. Considered system consists of two cooperating systems, i.e. a system of acquisition of geothermal energy in the form of a closed-loop underground heat exchanger and a system for utilization of geothermal energy such as a heat or heat-power plant operating according to low-temperature Clausius-Rankine cycle, where a substance with reduced boiling temperaturę has been used. Calculations have been accomplished for assumed data about the heat exchanger such as its dimensions, flow ratę of circulating liąuid, overall heat transfer coefficient, depth of the location of the horizontal part of the exchanger, which is related to temperaturę of surrounding rocks, which subseąuently enabled determination of working fluid temperaturę leaving the exchanger and supplying the power plant. On that basis, using the appropriate analytical model and taking up indispensable assumptions about the system and conditions of its operation, determined was the amount of energy possible to be produced in the analysed plants.

Radomir Kaczmarek, Zachodniopomorski Uniwersytet Technologiczny, Wydział Inżynierii Mechanicznej i Mechatroniki, Katedra Techniki Cieplnej, al. Piastów 19, 70-310 Szczecin, e-mail: [e-mail]

Aleksander A. Stachel, Zachodniopomorski Uniwersytet Technologiczny, Wydział Inżynierii Mechanicznej i Mechatroniki, Katedra Techniki Cieplnej, al. Piastów 19, 70-310 Szczecin, e-mail:[e-mail]