한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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20kW OTEC 터빈 개발

20kW Turbine Development for OTEC System

  • Han, Sangjo (Seoul National University of Science and Technology) ;
  • Seo, JongBeom (Seoul National University of Science and Technology)
  • 투고 : 2014.07.26
  • 심사 : 2014.11.14
  • 발행 : 2014.12.01
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초록

In Ocean, the temperature of the deep sea water is always lower than that of the surface sea water. The temperature difference between the surface water and deep sea water is about $20^{\circ}C$. Based on thermodynamics, this temperature difference can be converted into mechanical power. The mechanical power can be converted to electricity through a generator. However, the temperature difference is relatively small compared with that of traditional steam turbines. It is difficult to apply the steam turbine technology for this small temperature difference directly. Therefore, the turbine for OTEC system using low temperature difference should be designed to meet the system requirement. The present study focuses on the development of the turbine for 20 kW OTEC system using R32. The paper includes the determination of working fluids, meridional design, turbine layout and 3D CFD results. With off-design points analysis, the full performance of 20kW OTEC turbine is investigated. Through the research, one stage radial type turbine with R32 as working fluid is successfully developed and can be applied to other high temperature heat source.

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참고문헌

  1. Lennard DE., 1995, "The viability and best locations for ocean thermal energy conversion systems around the world." Renewable Energy 6(3), pp. 359-365. https://doi.org/10.1016/0960-1481(95)00023-D
  2. Odum HT., 2000, "Energy evaluation of an OTEC electrical power system." Energy 25, pp. 389-393. https://doi.org/10.1016/S0360-5442(99)00076-6
  3. Straatman PJT, Wilfried GJHM, Sark V., 2008, "A new hybrid ocean thermal conversion- offshore solar pond (OTEC-OSP) design: a cost optimization approach," Solar Energy 82, pp. 520-527. https://doi.org/10.1016/j.solener.2007.12.002
  4. Tseng CH, Kao KY, Yang JC., 1991, "Optimal design of a pilot OTEC power plant in Taiwan," Journal of Energy Resources Technology, Transactions of ASME 113, pp. 294-299. https://doi.org/10.1115/1.2905914
  5. Tanner D., 1995, "Ocean thermal energy conversion : current over view and future outlook." Renewable Energy 6(3), pp. 367-373. https://doi.org/10.1016/0960-1481(95)00024-E
  6. Takazawa H, Amano M, Tanaka T., 1996, "Performancec haracteristics of barometric-typeopen-cycle OTEC system," Heat Transfer - Japanese Research 25(4), pp. 226-237. https://doi.org/10.1002/(SICI)1520-6556(1996)25:4<226::AID-HTJ3>3.0.CO;2-Z
  7. Wu C, Burke TJ., 1998, "Intelligent computer aided optimization on specific power of an OTEC Rankine power plant." Applied Thermal Engineering 18(3), pp. 295-300. https://doi.org/10.1016/S1359-4311(97)00057-4
  8. Yeh RH, Su TZ, Yang MS., 2005, "Maximum output of an OTEC power plant." Ocean Engineering 32, pp. 685-700. https://doi.org/10.1016/j.oceaneng.2004.08.011
  9. Yamada N, Hoshi A, Ikegami Y., 2009, "Performance simulation of solar-boosted ocean thermal energy conversion plant." Renewable Energy 34, pp. 1752-1758. https://doi.org/10.1016/j.renene.2008.12.028
  10. Bronicki, L., 2007, "Organic Rankine Cycles in Geothermal Power Plants-25 Years of Ormat Experience," Proceedings of the GRC2007 Annual Meeting, Reno, NV.
  11. Yamaguchi, H., Zhang, X. R., Fujima, K., Enomoto, M., and Sawada, N., 2006, "Solar Energy Powered Rankine Cycle Using Supercritical $CO_{2}$," Appl. Therm. Eng., Vol. 26, No. 17-18, pp. 2345-2354.. https://doi.org/10.1016/j.applthermaleng.2006.02.029
  12. Angelino, G., and Colonna, P., 2000, "Organic Rankine Cycles for Energy Recovery From Molten Carbonate Fuel Cells," Proceedings of the 35th Inter. society Energy Conversion Engineering Conference (IECEC), AIAA Paper No. 2000-3052, pp. 1-11.
  13. Hung T.C., Wang S.K., Kuo C.H., Pei B.S. and Tsai K.F., 2010, "A Study of Organic Working Fluids on System Efficiency of an ORC Using Low-Grade Energy Source," Energy, Vol. 35, pp. 1403-1411. https://doi.org/10.1016/j.energy.2009.11.025
  14. Harinck J., Turunen-Saaresti T., Colonna P., Rebay S., Buijtenen J.V., 2010, "Computational Study of a High-Expansion Ratio Radial Organic Rankine Cycle Turbine Stator," Journal of Engineering for Gas Turbines and Power, Vol. 132, pp. 1-6.
  15. Concepts ETI, Inc., 2007, Rital User Guide,Concepts ETI Inc., 217 Billings farm road white river junction, VT 05001-9486 USA.

피인용 문헌

  1. Preliminary design and performance analysis of a radial inflow turbine vol.39, pp.7, 2015, https://doi.org/10.5916/jkosme.2015.39.7.735
  2. Performance and structural analysis of a radial inflow turbine for the organic Rankine cycle vol.40, pp.6, 2016, https://doi.org/10.5916/jkosme.2016.40.6.484
  3. 2014년 가스·스팀터빈 분야 연구동향 vol.18, pp.2, 2014, https://doi.org/10.5293/kfma.2015.18.2.082