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2013 | 20 | 2 |

Tytuł artykułu

Design analysis of ORC micro-turbines making use of thermal energy of aceans

Autorzy

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The article presents the results of the analysis of energy conversion cycles making use of thermal energy of oceans. The objects of analysis were two cases of closed Organic Rankine Cycle (ORC) power plants, which were: the cycle in which the vapour of the working medium was produced by warm oceanic water in the circum-equatorial zone, and the so-called “arctic” cycle in which this vapour was produced by non-frozen water in the circumpolar zone. Between ten and twenty low-boiling media were examined for which operating parameters were optimised to obtain the highest cycle efficiency. A preliminary design of an ORC turbine which was obtained by optimising basic design parameters is included. It has been proved that realisation of the Ocean Thermal Energy Conversion (OTEC) cycle is possible both in the warm and permanently frozen regions. The results of the calculations have also revealed that the efficiency of the OTEC cycle is higher in the circumpolar zone. Selecting a low-boiling medium and designing a highly efficient turbine operating in both abovementioned regimes is technically realisable

Słowa kluczowe

Wydawca

-

Rocznik

Tom

20

Numer

2

Opis fizyczny

p.48-60,fig.,ref.

Twórcy

  • Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, Narutowicza 11/12, 80-952 Gdansk, Poland

Bibliografia

  • 1. Akulichev V., Ilyin A., Tikmenov V.A. Possibility of Using OTEC Systems in Arctic Regions, OCEANS ‘83, Proceedings, Aug. 29 1983-Sept. 1 1983;
  • 2. Bogdanienko J. Renewable energy sources (in Polish), PWN, Warsaw, 1989; Fig. 19. Relative Mach number behind single-stage turbine rotor for the examined media
  • 3. Breeze P. Power Generation Technologies, ISBN 0 7506 6313 8, Elsevier’s Science and Technology Rights Department in Oxford, London, UK, 2005;
  • 4. Chong H-Y., Lam W-H. Ocean renewable energy in Malaysia The potential of the Straits of Malacca, Renewable and Sustainable Energy Reviews 23, 2013;
  • 5. Cohen R. Energy from the ocean, Phil. Trans. R, Soc. Lond. A 307, 1982;
  • 6. [Electronic document], access mode: http://www.otec.ws, [reading: 03-04-2013];
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  • 8. [Electronic document], access mode: http://www.seasolarpower. com, [reading: 03-04-2013];
  • 9. Etemadi A., Emdadi A., Afshar O. A., Emami Y. Electricity Generation by the Ocean Thermal Energy, Energy Procedia 12, 2011;
  • 10. Hung T.C., Wang S.K., Kuo C.H., Pei B.S., Tsai K.F. A study of organic working fluids on system efficiency of an ORC using low-grade energy sources, Energy 35, 2010;
  • 11. Kim N.J., Ng K.CH., Chun W. Using the condenser effluent from a nuclear power plant for Ocean Thermal Energy Conversion (OTEC), International Communications in Heat and Mass Transfer 36, 2009;
  • 12. Kosowski K. Selecting favourable values of basic design parameters for thermal turbines. Generalised method of turbine stage design (in Polish), Scientific reports of the Gdansk University of Technology, Shipbuilding, no LXII, Gdansk, 1995;
  • 13. Lewandowski W. Project of renewable energy sources (in Polish), WTN, Warszawa, 2001.
  • 14. Mikielewicz J., Piwowarski M., Kosowski K. Design analysis of turbines for co-generating micro-power plant working in accordance with organic Rankine’s cycle, Polish Maritime Research, S1, ISSN 1233-2585, 2009;
  • 15. Pelc R., Fujita R. M. Renewable energy from the ocean, Marine Policy 26, 2002;
  • 16. omputer code Engineering Equation Solver, Version 9.218, 2012;
  • 17. Computer code REFPROP Reference Fluid Thermodynamic and Transport Properties, Version 8, 2007;
  • 18. Rajagopalan K., Nihous G.C. Estimates of global Ocean Thermal Energy Conversion (OTEC) resources using an ocean general circulation model, Renewable Energy 50, 2013;
  • 19. Semmari H., Stitou D., Mauran S. A novel Carnot-based cycle for ocean thermal energy conversion, Energy 43, 2012;
  • 20. Vega L.A. First Generation 50 MW OTEC Plantship for the Production of Electricity and Desalinated, OTC 20957, Offshore Technology Conference, Houston, Texas, USA, 3–6 May 2010;
  • 21. Wu Ch., Avery W. H. Renewable Energy From the Ocean: A Guide to OTEC, Oxford University Press, ISBN 0195071999, 1994;
  • 22. Yamada N., Hoshi A., Ikegami Y. Thermal Efficiency Enhancement of Ocean Thermal Energy Conversion (OTEC) Using Solar Thermal Energy, AIAA 2006-4130, 4th International Energy Conversion Engineering Conference and Exhibit (IECEC), San Diego, California, 26 - 29 June 2006.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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