Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Computational Studies on the Combustion and Thermal Performance of the Coal Fired Utility Boiler : Temperature and Thermal Energy Distribution

석탄화력 보일러 연소열성능 해석 : 온도와 열에너지 분포를 중심으로

  • Seo, Sang-Il (Advanced Power and Combustion Group, KEPRI) ;
  • Park, Ho-Young (Advanced Power and Combustion Group, KEPRI) ;
  • Lee, Sung-No (Department of Mechanical Engineering, Chungnam National University)
  • 서상일 (한전 전력연구원 신발전연소그룹) ;
  • 박호영 (한전 전력연구원 신발전연소그룹) ;
  • 이성노 (충남대학교 기계공학부)
  • Published : 2009.03.10
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Abstract

The pulverized coal combustion behavior in the coal fired utility boiler has been investigated with the CFD and process analysis techniques. The used commercial software were CFX and PROATES, and these were coupled each other to get more reliable boundary condition set-up, resulting in more reliable solution. For two cases which were the actual operation condition of A power plant, the calculated values from the coupled CFD and process analysis for thermal energy system were compared with the plant data, and the good agreements were obtained for Case 1 and 2. The calculated temperature distributions on the surface of heat exchangers were compared with the plant data for the steam temperatures across heat exchangers, and these explained the actual operating situation very well. The temperature deviation across the final superheater tube, which was believed to be the main cause of the frequent tube failure, were also explained very well with the calculated distributions of gas temperature and radiation on the plane of the final superheater.

Keywords

References

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