THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

online first only

Design and experimental research on the combined flash-binary geothermal power generation system driven by low-medium temperature geothermal system

ABSTRACT
To match for the different temperature of the geothermal resource and strengthen the flexibility of organic Rankine cycle (ORC), a variable capacity power generation superstructure based on Flash and ORC for geothermal energy was proposed. A combined Flash-binary experimental prototype is newly established to investigate thermodynamic performance both on system and equipment in this paper. Pressured hot water is adopted as the extensive worldwide existed hydrothermal geothermal resource, eliminating the influence of the used heat transfer oil on evaporating process. The experimental results show that there is an optimal mass flow rate of R245fa under the condition of different heat source temperature. Flash and binary power subsystem dominate the flash-binary power system respectively when the heat source temperature is 120ºC and 130ºC. The isotropic efficiency of modified compressor just between 0.2 and 0.25; the power output of per ton geofluid are 0.78 kWh• t-1and 1.31 kWh• t-1 respectively when the heat source temperature are 120ºC and 130ºC. These results will predict the operation data of flash-binary power plant driven by the low-medium temperature geothermal water for construction in Western of China.
KEYWORDS
PAPER SUBMITTED: 2018-11-12
PAPER REVISED: 2018-12-25
PAPER ACCEPTED: 2018-12-26
PUBLISHED ONLINE: 2019-01-13
DOI REFERENCE: https://doi.org/10.2298/TSCI181112013L
REFERENCES
  1. A. Hussain, S.M. Arif, M. Aslam, et al., Emerging renewable and sustainable energy technologies: State of the art
  2. R. DiPippo, Geothermal Power Generation: Developments and Innovation Geothermal Power Generation
  3. R. Bertani, Geothermal Power Generation in the World 2010-2014 Update Report
  4. Y.Z. Wang, J. Zhao, Y. Wang, Multi-objective optimization and grey relational analysis on configurations of organic Rankine cycle
  5. D. Bonalumi, P., C. Bombarda, Potential performance of environmental friendly application of ORC and Flash technology in geothermal power plants
  6. M. Fallah, R. A. Ghiasi, N. H. Mokarram, A comprehensive comparison among different types of geothermal plants from exergy and thermoeconomic points of view
  7. N. Y. Ozcan, G. Gokcen, Thermodynamic assessment of gas removal systems for single-flash geothermal power plants
  8. S. Jalilinasrabady, R. Itoi, P. Valdimarsson,, Flash cycle optimization of Sabalan geothermal power plant employing exergy concept
  9. S.M. Bina, S. Jalilinasrabady, H. Fujii, Exergoeconomic analysis and optimization of single and double flash cycles for Sabalan geothermal power plant
  10. J. Clarke, T. James, J. McLeskey, The constrained design space of double-flash geothermal power plants
  11. N. A. Pambudi, R. Itoi, S. Jalilinasrabady, Performance improvement of a single-flash geothermal power plant in Dieng, Indonesia, upon conversion to a double-flash system using thermodynamic analysis
  12. J. Bao, L. Zhao, A review of working fluid and expander selections for organic Rankine cycle
  13. H. Chen, D.Y. Goswami, E.K. Stefanakos, A review of thermodynamic cycles and working fluids for the conversion of low-grade heat
  14. M. Imran, M. Usman, Byung-Sik Park, Comparative assessment of Organic Rankine Cycle integration for low temperature geothermal heat source applications
  15. P. Gao, L.W. Wang, R.Z. Wang, Experimental investigation on a small pumpless ORC (organic rankine cycle) system driven by the low temperature heat source
  16. S. Quoilin, R. Aumann, A. Grill, Dynamic modeling and optimal control strategy of waste heat recovery Organic Rankine Cycles
  17. B.R. Fu, S.W. Hsu, Y.R. Lee, Effect of off-design heat source temperature on heat transfer characteristics and system performance of a 250-kW organic Rankine cycle system
  18. G. Pei, J. Li, Y. Li, Construction and dynamic test of a small-scale organic Rankine cycle
  19. J. Chang, T. Hung, Y. He, Experimental study on low-temperature organic Rankine cycle utilizing scroll type expander
  20. R. Dickes, O. Dumont, R. Daccord, Modelling of organic Rankine cycle power systems in offdesign conditions: An experimentally-validated comparative study
  21. L. Li, Y.T. Ge, X. Luo, Experimental investigations into power generation with low grade waste heat and R245fa Organic Rankine Cycles (ORCs)
  22. P. Song, M. Wei, L. Shi, A review of scroll expanders for organic Rankine cycle systems
  23. Z. Wu, D. Pan, N. Gao, Experimental testing and numerical simulation of scroll expander in a small scale organic Rankine cycle system
  24. J.C. Chang, C.W. Chang, T.C, Hung, Experimental study and CFD approach for scroll type expander used in low-temperature organic Rankine cycle
  25. R. Bracco, S. Clemente, D. Micheli, Experimental tests and modelization of a domesticscale ORC (Organic Rankine Cycle)
  26. S. Quoilin, V. Lemort, J. Lebrun, Experimental study and modeling of an organic Rankine cycle using scroll expander
  27. B. Twomey, P.A. Jacobs, H. Gurgenci, Dynamic performance estimation of small-scale solar cogeneration with an organic Rankine cycle using a scroll expander
  28. G. Liu, Y. Zhao, Q. Yang, Theoretical and experimental research on scroll expander used in small-scale organic Rankine cycle system
  29. M. Zeyghami, Performance analysis and binary working fluid selection of combined flashbinary geothermal cycle
  30. J.Y. Wang, J.F. Wang, Y.P. Dai, P. Zhao, Thermodynamic analysis and optimization of a flash-binary geothermal power generation system
  31. C. Yilmaz, M. Kanoglu, A. Abusoglu, Exergetic cost evaluation of hydrogen production powered by combined flash-binary geothermal power plant
  32. A. Aali, N. Pourmahmoud, V. Zare, Exergoeconomic analysis and multi-objective optimization of a novel combined flash-binary cycle for Sabalan geothermal power plant in Iran
  33. Y. Zhao, J. Wang, Exergoeconomic analysis and optimization of a flash-binary geothermal power system
  34. R.J. Moffat, Describing the uncertainties in experimental results