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

  • 제39권10호
  • /
  • Pages.787-793
  • /
  • 2015
  • /
  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지
DOI QR코드

DOI QR Code

예열기를 갖는 초임계 이산화탄소 동력 사이클의 시뮬레이션

Simulation of a Supercritical Carbon Dioxide Power Cycle with Preheating

  • 나선익 (한국에너지기술연구원 열에너지변환연구실) ;
  • 백영진 (한국에너지기술연구원 열에너지변환연구실)
  • Na, Sun-Ik (Thermal Energy Conversion Laboratory, Korea Institute of Energy Research) ;
  • Baik, Young-Jin (Thermal Energy Conversion Laboratory, Korea Institute of Energy Research)
  • 투고 : 2015.03.31
  • 심사 : 2015.08.21
  • 발행 : 2015.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

초임계 이산화탄소($S-CO_2$) 사이클은 소형화된 터보기계 및 열교환기를 통해서 작은 공간에서도 높은 열효율로 전력을 생산할 수 있는 잠재력을 가진 것으로 평가되고 있으며, 최근 이에 대한 관심이 증가하고 있다. 원자력 및 태양열(CSP) 분야에서 $S-CO_2$ 사이클에 대한 연구 결과가 다수 소개되어 온 반면, 폐열 분야에 대한 연구 결과는 상대적으로 많지 않다. 본 연구에서는 폐열 회수 응용 분야에 있어서, 예열에 의한 $S-CO_2$ 사이클의 성능 향상 가능성을 살피기 위하여, 재생 $S-CO_2$ 브레이튼 사이클과 예열기를 갖는 재생 $S-CO_2$ 브레이튼 사이클을 모델링하고 시뮬레이션 하였다. 시뮬레이션 결과, 순출력을 극대화시키는 최적 $CO_2$ 분기율이 존재함을 확인하였다. 본 연구의 시뮬레이션 조건 하에서, 예열기에 의한 순출력 향상은 약 16-26%로 계산되었다.

In response to the growing interest in supercritical carbon dioxide ($S-CO_2$) power cycle technology because of its potential enhancement in compactness and efficiency, the $S-CO_2$ cycles have been studied intensively in the fields of nuclear power, concentrated solar power (CSP), and fossil fuel power generation. Despite this interest, there are relatively few studies on waste heat recovery applications. In this study, the $S-CO_2$ cycle that has a split flow with preheating was modeled and simulated. The variation in the power was investigated with respect to the changes in the value of a design parameter. Under the simulation conditions considered in this study, it was confirmed that the design parameter has an optimal value that can maximize the power in the $S-CO_2$ power cycle that has a split flow with preheating.

키워드

참고문헌

  1. Sanchez, D., Munoz de Escalona, J.M., Chacartegui, R., Munoz, A. and Sanchez, T., 2011, "A Comparison Between Molten Carbonate Fuel Cells Based Hybrid Systems Using Air and Supercritical Carbon Dioxide Brayton Cycles with State of the Art Technology," Journal of Power Sources Vol.196, Issue 9, pp. 4347-4354. https://doi.org/10.1016/j.jpowsour.2010.09.091
  2. Bae, S. J., Ahn, Y. H., Lee, J. K. and Lee J. I., 2014, "Various Supercritical Carbon Dioxide Cycle Layouts Study for Molten Carbonate Fuel Cell Application," Journal of Power Sources Vol.270, pp. 608-618. https://doi.org/10.1016/j.jpowsour.2014.07.121
  3. Chen, Y., Lundqvist, P. and Platell, P., 2005, "Theoretical Research of Carbon Dioxide Power Cycle Application in Automobile Industry to Reduce Vehicle's Fuel Consumption," Applied Thermal Engineering, Vol.25, Issues 14-15, pp. 2041-2053. https://doi.org/10.1016/j.applthermaleng.2005.02.001
  4. Persichilli, M., Held, T., Hostler, S., Zdankiewicz, E., and Klapp, D., 2011, "Transforming Waste Heat to Power Through Development of a CO2 - Based Power Cycle," Electric Power Expo 2011, 10-12 May, Rosemount, IL USA.
  5. Persichilli, M., Kacludis, A., Zdankiewicz, E. and Held, T., 2012, "Supercritical CO2 Power Cycle Developments and Commercialization: Why sCO2 can Displace Steam," Power-Gen India & Central Asia 2012, Pragati Maidan, New Delhi, India.
  6. Di Bella, F. A., 2011, "Gas Turbine Engine Exhaust Waste Heat Recovery Navy Shipboard Module Development," Supercritical CO2 Power Cycle Symposium, Boulder Colorado.
  7. Walnum, H. T., Neksa, P., Nord, L. O. and Andresen, T., 2013, "Modelling and Simulation of CO2 (Carbon Dioxide) Bottoming Cycles for Offshore Oil and Gas Installations at Design and Off-Design Conditions," Energy Vol.59, pp. 513-520. https://doi.org/10.1016/j.energy.2013.06.071
  8. Baik, Y. J., Jang J. C., Cho, J. H., Ra, H. S. and Kim, M. S., 2014, "Power Optimization of Supercriticla CO2 Brayton Cycles for a Shipboard Waste Heat Recovery System," AFORE 2014, Yeosu, Korea.
  9. Held, T. J., 2014, "Initial Test Results of a Megawatt- Class Supercritical CO2 Heat Engine," The 4th International Symposium - Supercritical CO2 Power Cycles, Pittsburgh, Pennsylvania.
  10. Mohagheghi, M. and Kapat, J., 2014, "Thermodynamic Optimization of Recuperated S-CO2 Brayton Cycles for Waste Heat Recovery Applications," The 4th International Symposium - Supercritical CO2 Power Cycles, Pittsburgh, Pennsylvania.
  11. Wright, S. A., Davidson, C. S. and Scammell, W. O., 2014, "Bulk Energy Storage using a Supercritical CO2 Waste Heat Recovery Power Plant," The 4th International Symposium - Supercritical CO2 Power Cycles, Pittsburgh, Pennsylvania.