Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
권호 표지

Study on OTEC for the Production of Electric Power and Desalinated Water

전력 및 담수생산을 위한 해양온도차발전에 대한 연구

  • Park, Sung-Seek (Dept. of Nuclear & Energy Engineering, Jeju National University) ;
  • Kim, Nam-Jin (Dept. of Nuclear & Energy Engineering, Jeju National University)
  • Received : 2010.04.09
  • Accepted : 2010.06.11
  • Published : 2010.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Ocean Thermal Energy Conversion(OTEC) power plants have been examined as a viable option for supplying clean energy. This paper evaluated the thermodynamic performance of the OTEC Power system for the production of electric power and desalinated water. The results show that newly developed fluids such as R32, R125, R143a, and R410A that do not cause stratospheric ozone layer depletion perform as well as R22 and ammonia. Overall cycle efficiency of open cycle is the lowest value of 3.01% because about 10% of the gross power is used for pumping out non-condensable gas. Also, the hybrid cycle is an attempt to combine the best features and avoid the worst features of the open and closed cycles. The overall cycle efficiency of hybrid cycle is 3.44% and the amount of desalinated water is 0.0619 kg/s.

Keywords

References

  1. D'Arsonval, A., "Utilisation de forces naturelles", Revue Scientifique, Vol. 17, pp. 370-372, 1881.
  2. Claude, G., "Power from the Tropical Seas", Mechanical Engineering, Vol. 52, No. 12, pp. 1039-1044, 1930.
  3. Uehara, H, and Ikegami, Y., "Optimization of a Closed-Cycle OTEC system", J. of solar energy Engineer- ing, Vol. 112, pp.247-256, 1990. https://doi.org/10.1115/1.2929931
  4. Uehara, H., Miyara, A., Ikegami, Y., Nakaoka, T., "Performance analysis of an OTEC plant and a desalination plant using an integrated hybrid cycle", J. Solar Energy Eng., Vol. 118, pp. 115-122, 1996. https://doi.org/10.1115/1.2847976
  5. Ikegamia, Y., Sasakib, H., Goudab, T., Uehara, H., "Experimental study on a spray flash desalination", Desalination, Vol. 194, pp. 81-89, 2006. https://doi.org/10.1016/j.desal.2005.10.026
  6. Kim, N. J., Kim, C. N., and Chun, W. G., "Using the condenser effluent from a nuclear power plant for Ocean Thermal Energy Conversion(OTEC)", International Communications in Heat and Mass Transfer Vol. 36, pp. 1008-1013, 2009. https://doi.org/10.1016/j.icheatmasstransfer.2009.08.001
  7. Penney, T., Bharathan, D., Althof, J., and Parsons, B., "Open-Cycle Ocean Thermal Energy Conversion (OTEC) Research: Progress Summary and a Design Study," ASME Paper, 84-WA/Sol-26, 1984.
  8. Panchal C.B. and Bell K.J., "Simu- ltaneous production of desalinated Wat -er and power using a hybrid - cycle OTEC plant", Transaction of the ASME, Vol. 109, pp. 156-160, 1987.
  9. Shin, S.H., Jung, D.S., Kim, C.B., Seo, T.B., "Analysis of a simple Rankine cycle and regenerative Ranline cycle for OTEC application", Proceedings of the Int. OTEC/DOWA conference, pp. 142-151, 1999c