Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Feasibility of a Solar Thermal Organic Rankine Cycle Power Plant for an Apartment Complex with Aspen Plus®

ASPEN PLUS®를 이용한 태양열 유기랭킨사이클 열병합 발전시스템의 공동주택 적합도 분석

  • Received : 2014.09.03
  • Accepted : 2015.01.25
  • Published : 2015.04.01
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Abstract

In this study, a solar thermal system is designed to provide hot water and electricity for improvement of solar thermal energy availability in an apartment complex. The electricity is generated with Organic Rankine Cycle (ORC) by the solar thermal energy. R134a, R141b and R245fa are selected for operating fluid of the solar thermal ORC system. ORC with R245fa shows the best performance based on the variation of pressure. The irreversibility of component showed that the technology advance of the evaporator ensures a performance improvement. The sensitivity study results indicate that the turbine performance is most effective way to improve the performance of ORC system. An economic analysis showed that approximately 50% more income could be achieved by a solar thermal ORC system with a hot water supply.

본 연구에서는 아파트단지에 적용되는 태양열 급탕 시스템의 에너지 활용도를 높이기 위해 유기랭킨사이클을 적용하여 해석적 연구를 수행하였다. 시스템 해석은 Aspen $Plus^{(R)}$을 활용하였으며 태양열집열기는 급탕 온도와 유기랭킨 사이클의 운전 조건을 고려하여 진공관형 집열기를 적용하였다. R134a, R141a, R245fa 등의 냉매를 작동유체로 선정하였으며, 시스템 성능해석을 통하여 R245fa 냉매가 적용가능성이 가장 높게 나타났다. 비가역성 해석과 민감도 해석을 통해 유기랭킨 사이클 시스템의 효율 및 성능 확보를 위해서는 증발기와 터빈에 대한 기술 개발이 매우 중요하다는 것을 밝혀냈으며, 순수 급탕으로만 활용하는 시스템에 전기 생산 설비를 추가하게 되면 약 50%의 추가적인 경제성이 확보됨을 확인하였다.

Keywords

References

  1. Kang, H., 2009, "Organic Rankine Cycle Power Propulsion," Korean Journal of mechanical Engineering, Vol. 49, No. 9, pp. 47-51.
  2. Saleh, B., Koglbauer, G., Wendland, M. and Fischer, J., 2007, "Working Fluids for Low-temperature Organic Rankine Cycles," Energy, Vol. 32, pp. 1210-1221. https://doi.org/10.1016/j.energy.2006.07.001
  3. Hung, T. C., Shai, T. Y. and Wang, S. K., 1997, "A Review of Organic Rankine Cycles(ORCs) for the Recovery of Low-grade Waste Heat," Energy, Vol. 22, No. 7, pp. 661-667. https://doi.org/10.1016/S0360-5442(96)00165-X
  4. Tchanche, B. F., Papadakis, G., Lambrinos, G. and Frangoudakis, A., 2009, "Fluid Selection for a Low-temperature Solar Organic Rankine Cycle," Applied Thermal Engineering, Vol. 29, pp. 2468-2476. https://doi.org/10.1016/j.applthermaleng.2008.12.025
  5. Mago, P. J., Chamra, L. M., Srinivasan, K. and Somayaji, C., 2008, "An Examination of Regenreative Organic Rankine Cycles Using Dry Fluids," Applied Thermal Engineering, Vol. 28, pp. 98-107
  6. Hung, T. C., 2001, "Waste Heat Recovery of Organic Rankine Cycle Using Dry Fluids," Energy Conversion and Management, Vol. 42, pp. 539-553. https://doi.org/10.1016/S0196-8904(00)00081-9
  7. Lee, Y. S. and Lee, W. Y., 1989, "Mid and Low Temperature Power Recovery System with Organic Rankine Cycle System," KSAREK, Vol. 18, No. 1, pp. 29-35.
  8. Cho, H. C, Park, H. S. and Lee, Y. K., 2001, "Development of 1 MW Organic Rankine Cycle System for Industrial Waste Heat Recovery," Journal of The Korea Socity for Energy Engineering, Vol. 10, No. 4, pp. 318-326.
  9. Kim, K. H., 2011, "Study of Working Fluid on Thermodynamics Performance of Organic Rankine Cycle(ORC)," Transaction of the Korean Hydrogen and New Energy Society, Vol. 22, No. 2, pp. 223-231.
  10. Oh, C. and Song, Y. U., 2012, "A Study on the Ship's ORC Power System Using Seawater Temperature Difference," Journal of Navigation and Port Research, Vol. 36, No. 5, pp. 349-355. https://doi.org/10.5394/KINPR.2012.36.5.349
  11. Baek, Y. J., Kim, M. S., Chang, K. C., Yoon, H. K., Lee, Y. S. and Nah, H. S., 2009, "Analysis of HFC-245fa Organic Rankine Cycle for Geothermal Power Generation," Transaction of the korea society of geothermal energy engineering, Vol. 5, No. 1, pp. 1-6.
  12. Apartment management info system, http://www.k-apt.go.kr
  13. Quoilin, S., 2007, "Experimental Study and Modeling of a Low Temperature Rankine Cycle for Small Scale Cogeneration," Ph.D. dissertation, University of Liege.
  14. http://www.energy.or.kr
  15. http://www.kma.go.kr
  16. Kim, M. Y., Choi, B. D., Kim, H. G. and Park, J. C., 2012, "A Study on the Effective Installation to the Apartment through Solar Collector Performance Test," Solar energy, Vol. 32, No. 1.
  17. Hong, E. K., Kim, J. M. and Park, C. Y., 2011, "A Thermodynamic Efficiency Analysis of Basic and Regenerative Organic Rankine Cycles," Proceeding of KSAREK, pp. 1204-1207.
  18. Park, J. S., 2008, "A Study on the Optimum Supply Scheme of Solar Energy System for Apartment Complex," Hanbat National University.