Performance analysis of an organic Rankine cycle for ocean thermal energy conversion system according to the working fluid and the cycle

Title & Authors
Performance analysis of an organic Rankine cycle for ocean thermal energy conversion system according to the working fluid and the cycle
Kim, Jun-Seong; Kim, Do-Yeop; Kim, You-Taek; Kang, Ho-Keun;

Abstract
Ocean thermal energy conversion is an organic Rankine cycle that generates power using the temperature difference between surface water and deep water. This study analyzes the thermodynamic efficiency of the cycle, which strongly depends on the working fluid and the cycle configuration. Cycles studied included the classical simple Rankine cycle, Rankine cycles with an open feedwater heater and an integrated regenerator, as well as the Kalina cycle. Nine kinds of simple refrigerants and three kinds of mixed refrigerants were investigated as the working fluids in this study. Pinch-point analysis that set a constant pinch-point temperature difference was applied in the performance analysis of the cycle. Results showed that thermodynamic efficiency was best when RE245fa2 was used as the working fluid with the simple Rankine cycle, the Rankine cycles with an open feedwater heater and an integrated regenerator, and when the mixing ratio of $\small{NH_3/H_2O}$ was 0.9:0.1 in the Kalina cycle. If the Rankine cycles with an open feedwater heater, an integrated regenerator, and the Kalina cycle were used for ocean thermal energy conversion, efficiency increases could be expected to be approximately 2.0%, 1.0%, and 10.0%, respectively, compared to the simple Rankine cycle.
Keywords
Ocean thermal energy conversion;Organic rankine cycle;Working fluid;
Language
Korean
Cited by
1.
Performance analysis of an organic Rankine cycle for ocean thermal energy conversion system according to pinch point temperature difference, Journal of the Korean Society of Marine Engineering, 2016, 40, 6, 476
2.
Performance and structural analysis of a radial inflow turbine for the organic Rankine cycle, Journal of the Korean Society of Marine Engineering, 2016, 40, 6, 484
References
1.
B. F. Tchanche, M. Petrissans, and G. Papadakis, "Heat resources and organic Rankine cycle machines", Journal of the Renewable and Sustainable Energy Reviews, vol. 39, pp. 1185-1199, 2014.

2.
M. H. Yang and R. H. Yeh, "Analysis of optimization in an OTEC plant using organic Rankine cycle", Journal of the Renewable Energy, vol. 68, pp. 25-34, 2014.

3.
L. A. Vega, "Ocean thermal energy conversion primer", Journal of the Marine Technology Society, vol. 6, no. 4, pp. 25-35, 2003.

4.
H. J. Kim, H. S. Lee, Y. K. Jung, D. H. Jung, D. S. Moon, and S. W. Hong, "Feasibility study on the commercial plant of ccean thermal energy conversion (OTEC-K50)", Proceedings of the Twenty-second International Offshore and Polar Engineering Conference, pp. 763-768, 2012.

5.
B. F. Tchanche, G. Lambrinos, A. Frangoudakis, and G. Papadakis, "Low-grade heat conversion into power using organic Rankine cycles - A review of various applications", Journal of the Renewable and Sustainable Energy Reviews, vol. 15, no. 8, pp. 3963-3979, 2011.

6.
H. Uehara and Y. Ikegami, "Parametric performance analysis of OTEC system using HFC32/HFC134a mixtures", Journal of the ASME Solar Engineering, vol. 2, pp. 1005-1010, 1995.

7.
N. Yamada, A. Hoshi, and Y. Ikegami, "Performance simulation of solar-boosted ocean thermal energy conversion plant", Journal of the Renewable Energy, vol. 34, no. 7, pp. 1752-1758, 2009.

8.
V. Maizza and A. Maizza, "Working fluids in non-steady flows for waste energy recovery systems", Journal of the Applied Thermal Engineering, vol. 16, no. 7, pp. 570-590, 1996.

9.
T. Yamamo, T. Furuhata, N. Arai, and K. Mori, "Design and testing of the organic Rankine cycle", Journal of the Energy, vol. 26, no. 3, pp. 239-251, 2001.

10.
B. F. Tchanche, G. Papadakis, G. Lambrinos, and A. Frangoudakis, "Fluid selection for a low-temperature solar organic Rankine cycle", Journal of the Applied Thermal Engineering, vol. 29, no. 11-12, pp. 2468-2476, 2009.

11.
J. I. Yoon, B. H. Ye, J. H. Heo, H. J. Kim, H. S. Lee, and C. H. Son, "Performance analysis of 20 kW OTEC power cycle using various working fluids", Journal of the Korean Society of Marine Engineering, vol. 37, no. 8, pp. 836-842, 2013 (in Korean).

12.
D. Wang, X. Ling, and H. Peng, "Performance analysis of double organic Rankine cycle for discontinuous low temperature waste heat recovery", Journal of the Applied Thermal Engineering, vol. 48, pp. 63-71, 2012.

13.
C. Guo, X. Du, L. Yang, and Y. Yang, "Performance analysis of organic Rankine cycle based on location of heat transfer pinch point in evaporator", Journal of the Applied Thermal Engineering, vol. 62, no. 1, pp. 176-186, 2014.

14.
Y. R. Li, J. N. Wang, and M. T. Du, "Influence of coupled pinch point temperature difference and evaporation temperature on performance of organic Rankine cycle", Journal of the Energy, vol. 42, no. 1, pp. 503-509, 2012.

15.
H. Aydin, H. S. Lee, H. J. Kim, S. K. Shin, and K. Park, "Off-design performance analysis of a closed-cycle ocean thermal energy conversion system with solar thermal preheating and superheating", Journal of the Renewable Energy, vol. 72, pp. 154-163, 2014.

16.
N. J. Kim, S. H. Shin, and W. G. Chun, "A study on the thermodynamic cycle of OTEC system", Journal of the Korean Solar Energy Society, vol. 26, no. 2, pp. 9-18, 2006 (in Korean).

17.
H. S. Lee, H. J. Kim, D. H. Jung, and D. S. Moon, "A study on the improvement for cycle efficiency of closed-type OTEC", Journal of the Korean Society of Marine Engineering, vol. 35, no. 1, pp. 46-52, 2011 (in Korean).

18.
Y. A. Cengel and M. A. Boles, Thermodynamics, McGrawHill, 2011.

19.
S. H. Shin, D. S. Jung, C. B. Kim, and T. B. Seo, "A study of ocean thermal energy conversion systems using Kalina cycle and regenerative Rankine cycle", Journal of the Korean Solar Energy Society, vol. 19, no. 3, pp. 101-113, 1999 (in Korean).

20.
M. Yari, A. Mehr, V. Zare, S. Mahmoudi, and M. Rosen, "Exergoeconomic comparison of TLC (trilateral Rankine cycle), ORC(organic Rankine cycle) and Kalina cycle using a low grade heat source", Journal of the Energy, vol. 83, pp. 712-722, 2015.

21.
X. Zhang, M. He, and Y. Zhang, "A review of research on the Kalina cycle", Journal of the Renewable and Sustainable Energy Reviews, vol. 16, no. 7, pp. 5309-5318, 2012.

22.
F. Sun, Y. Ikegami, B. Jia, and H. Arima, "Optimization design and exergy analysis of organic Rankine cycle in ocean thermal energy conversion", Journal of the Applied Ocean Research, vol. 35, pp. 38-46, 2012.

23.
E. Wang, H. Zhang, B. Fan, M. Ouyang, Y. Zhao, and Q. Mu, "Study of working fluid selection of organic Rankine cycle(ORC) for engine waste heat recovery", Journal of the Energy, vol. 36, no. 5, pp. 3406-3418, 2011.

24.
J. Chen and J. Yu, "Performance of a new refrigeration cycle using refrigerant mixture R32/R134a for residential air-conditioner applications", Journal of the Energy and Buildings, vol. 40, no. 11, pp. 2022-2027, 2008.