Assessing the effectiveness of a heating plant operation fed from a horizontal geothermal heat exchanger with qualitative regulation

• Autorzy: Kaczmarek R , Stachel A.A.
• Języki publikacji: EN

Abstrakty

EN

This paper presents preliminary results of calculations of different cases of a geothermal horizontal heat exchanger, where the vertical extraction channel is manufactured as a tube-in-tube exchanger. Such a channel permits control of the mass flow rate of water flowing through its circular (inner) part or annular (external) part, where the latter part also forms the thermal insulation of the exchanger. Results of calculations enable us to control the extent of both outflowing flow rates of water, which will permit us to attain the required temperature of the fluid at an outlet from the exchanger. Due to the fact that the fluid is, at the same time, the energy carrier supplying the heat receivers, the postulated design is equivalent to the equality of rates of acquired geothermal heat and heat demand in receivers of a district heating network for some external temperatures.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2010
• Tom: 19
• Numer: 3
• Opis fizyczny: p.529-536,fig.,ref.

Twórcy

autor

Kaczmarek R

• West Pomeranian University of Technology, Piastow 17, 70-310 Szczecin, Poland

autor

Stachel A.A.

Bibliografia

• 1. NOWAK W., SOBAŃSKI R., KABAT M., KUJAWA T. Systems of acquisition and utilisation of geothermal energy. Publishing: Technical University of Szczecin, Szczecin 2000, [In Polish].
• 2. NOWAK W., STACHEL A.A. State of the art and perspectives of utilization of the some renewable sources of energy in Poland. Publishing: Technical University of Szczecin, Szczecin 2004, [In Polish].
• 3. NOWAK W., STACHEL A.A., BORSUKIEWICZ-GOZDUR A. Applying of renewable sources of energy. Publishing: Technical University of Szczecin, Szczecin 2004, [In Polish].
• 4. NOWAK W., STACHEL A.A. Assessment of operation of a underground closed geothermal hest exchanger, Proceedings of V Minsk International Heat and Mass Transfer Forum, paper 8-48, Minsk, 24-28. 05. 2004.
• 5. NOWAK W. Analytical calculation model of underground closed geothermal heat exchanger. Archives of Thermodynamics, 26, 49, 2005 [In Polish].
• 6. KUJAWA T., KACZMAREK R. Heat flow characteristics of underground closed geothermal heat exchange. XIII Symposium: Nutzung Regenerativer Energiequellen und Wasserstofftechnik, Stralsund, 2-4. 11. 2006.
• 7. NOWAK W., KACZMAREK R. Thermal-hydraulic analysis of horizontal closed-loop geothermal heat exchanger. Proceedings XIII Symposium of Heat and Mass Transfer PAS. Koszalin-Darłowek, 3-6. 09. 2007 [In Polish].
• 8. PLEWA M., PLEWA S. Analysis of possibilities of utilisation of geothermal energy in Poland from dry hot rocks. Proc. of Conference on Possibilities of utilization of geothermal resources in Poland with a particular focus on Mogilno-Lodz synklinorium, Slesin by Konin, AGH Krakow, pp. 171-181, 1990 [In Polish].
• 9. WOLFF H., SCHMIDT S., MOLLER F., LEGARTH B., OPPELT J., TREVIRANUS J. Electric energy generation from geothermic energy. Project No. BMU – ZIP 0327506, Status-Quo, June 2002. Proceedings of Symposium “Electric energy from geothermal energy”, Landau, Germany, 20.-21. June 2002 [In German].
• 10. WOLFF H., MOLLER F., BESSER T., SCHMIDT S., OPPELT J., TREVIRANUS J. Advanced engineering geology and drilling technology in carrying out of deep horizontal closed-loop geothermal exchangers. Project No. BMU– ZIP 0327506. Proceedings of 7th Geothermal Symposium, Waren (Germany), 06.-08. November 2002 [In German].
• 11. NOWAK W., SZAFLIK W., STACHEL A., KUJAWA T., ZWARYCZ K., BORSUKIEWICZ-GOZDUR A., HORTYŃSKA M., KACZMAREK R., WIŚNIEWSKI S., WOŚ M., SZCZERBA Z., CZAŁCZYŃSKI J. Thermalhydraulic characteristics of cooperation of heat receivers with geothermal heat exchangers. Final report from research project, No. 3 T10B 075 27; Szczecin 2008, [In Polish].
• 12. NOWAK W., KACZMAREK R. Assessment of the influence of application of active insulation in the extracting part of underground closed geothermal heat exchanger on its influence, Proceedings XIII Symposium on Heat and Mass Transfer, Koszalin-Darłowek, 2007 [In Polish].
• 13. PN-82/B-02403, External calculation temperatures, Polish Standard [In Polish].
• 14. http://www.ure.gov.pl, website of Energy Regulation Office.
• 15. SZARGUT J., ZIĘBIK A. Fundamentals of energy management, PWN, Warsaw 1993 [In Polish].
• 16. NOWAK W., SZAFLIK W., KABAT M., KUJAWA T., STACHEL A.A., BORSUKIEWICZ-GOZDUR A., PIWOWARSKI R., ROGOWSKA A., SZCZERBA Z., WIŚNIEWSKI S., WOŚ M., ZWARYCZ K. Assessment of energy and economy effectiveness of heating installations supplied with geothermal water with average and low enthalpy, Final report from research project, No. 8 T10B 047 21, Szczecin 2004 [In Polish].