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Field Scale Study for Energy Efficiency Improvement of Crematory System by the Shape Optimization of Combustion Chamber

화장로 형상 최적화를 통한 에너지효율개선을 위한 실증연구

  • Won, Yong-Tae (Department of Environmental Engineering, Catholic Kwandong University) ;
  • Lee, Seung-Mok (Department of Environmental Engineering, Catholic Kwandong University)
  • 원용태 (가톨릭관동대학교 환경공학과) ;
  • 이승목 (가톨릭관동대학교 환경공학과)
  • Received : 2019.06.19
  • Accepted : 2019.08.06
  • Published : 2019.10.10

Abstract

The purpose of this study was to improve the performance of the bogie-type crematory, which is the mainstream of domestic crematory equipment. A field scale technology was investigated via increasing the volume by changing the shape of the furnace and reducing the cremation time and saving the energy usage through the optimization of burner combustion control. First, the optimized structural design through thermal flow analysis increases the volume of the main combustion chamber by about 70%, which increases the residence time of the combustion flue gas. A designed pilot crematory was then installed and the combustion behavior was tested under various operating conditions and the optimum operating plan was derived from for each furnace shape. Based on the results, the practically applicable crematory was designed and installed at Y crematorium in the P City. Optimal combustion conditions could be derived through operating the demonstration crematory furnace. The crematory time and fuel consumption could be minimized by increasing the energy efficiency by increasing the residence time of high temperature combustion flue gas. In other words, the crematory time and fuel consumption were 38 min and $21.8Nm^3$, respectively which were shortened by 44.1 and 54.4% lower than that of the existing crematory, respectively.

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