Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
권호 표지
DOI QR코드

DOI QR Code

1-D Modeling of Heater Surface Temperature Distribution in EHC-based Urea-SCR System

EHC 기반 Urea-SCR 시스템 히터 표면온도 분포의 1-D 모델링

  • 박선홍 (인하대학교 기계공학과) ;
  • 손지현 (인하대학교 기계공학과) ;
  • 문석수 (인하대학교 기계공학과) ;
  • 오광철 (한국자동차연구원 하이브리드동력센터) ;
  • 장성욱 ((주)세종공업 중앙연구소) ;
  • 박성서 ((주)세종공업 중앙연구소)
  • Received : 2022.02.16
  • Accepted : 2022.02.28
  • Published : 2022.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

In upcoming Post Stage-V and Tier 5 regulations of construction machineries, nitrogen oxide (NOx) emissions are strictly limited in cold start conditions. In response to this, a method of improving NOx conversion efficiency has been applied by installing an electric heating catalyst (EHC) in front of conventional urea-SCR systems so that the evaporation and thermal decomposition of urea-water solution can be promoted in cold start conditions. In this strategy, the evaporation and thermal decomposition of urea-water solution and corresponding NOx conversion efficiency are governed by temperature conditions inside the EHC. Therefore, characterizing the temperature distribution in the EHC under various operating conditions is crucial for the optimized operation and control of the EHC in Urea-SCR systems. In this study, a 1-D modeling analysis was performed to predict the heater surface temperature distribution in EHC under various operating conditions. The reliability of prediction results was verified by comparing them with measurement results obtained using an infrared (IR) camera. Based on 1-D analysis results, the effects of various EHC operation parameters on the heater surface temperature distribution were analyzed and discussed.

Keywords

Acknowledgement

본 연구는 정부(환경부) 재원으로 미세먼지 사각지대 해소 및 관리 실증화 기술개발사업과제의 일환으로 수행되었으며, 이에 깊은 감사를 드립니다.

References

  1. D. S. Kim, T. J Wang, M. Y. Kim and J. K. Lee, "Diesel Engine Technologies for Next-generation Stage V Emission Regulation", The Korean Society of Automotive Engineers, 2017, pp. 25~30.
  2. Y. K. Park and S. B. Choi, "Patent Map: Vehicle Emission Aftertreatment Equipment", The Korean Society Of Automotive Engineers, 2005, pp. 57~61.
  3. S. M. Kim, W. C. Sim, M. H. Han and J. S. Park, "Numerical study on the Performance and Emission characteristics under 800cc MPI Turbo SI engine", The Korean Society of Automotive Engineers, 2021, pp. 78~79.
  4. D. I. Lee, Y. S Yu, J. H. Park, M. S. Chon and J. P.Cha, "NOx Conversion Efficiency of SCR Diesel Vehicle Under Cold Start Condition", ILASS-Korea, 2018, pp. 244~253.
  5. J. B. Gao, H. C. Chen, Ye Liu, Tiezhu Li, Ran Tu, Biao Liang and Chaochen Ma", The effect of after-treatment techniques on the correlations between driving behaviours and NOx emissions of passenger cars", Journal of Cleaner Production, 2021, Vol. 288.
  6. Jianbing Gao, Guohong Tian and Aldo Sorniotti , "On the emission reduction through the application of an electrically heated catalyst to a diesel vehicle", Energy Sci Eng, 2019, pp. 2383~2397.
  7. J. B. Ning and F. J. Yan, "Temperature Control of Electrically Heated Catalyst for Cold-start Emission Improvement", IFAC-PapersOnline, 2016, pp. 14~19.
  8. S. H. Lee, K. B. Lee, J. H. Won, J. G. Lee and K. W. Oh, "An Experimental Study on the effect of Urea - SCR doing system using EHC on NOx reduction", The Korean Society of Automotive Engineers, 2021, pp. 118~119.
  9. M. T. Nazir, Miles Brammer, Robert Scholz, Florian Zote, Frank Bunar and Friedemann Schrade, "Electrically Heated Catalyst(EHC) Development of Diesel Applications", International Journal of Automotive Engineering 6, 2015, pp 127~133. https://doi.org/10.20485/jsaeijae.6.4_127
  10. Frank P. Incropera, David P. Dewitt, Theodore L. Bergman and Adrienne S. Lavine, "Incropera's Principle of Heat and Mass Transfer", WILEY, 2017.