A Study on Heat Storage System Using Calcined Dolomite - Numerical Analysis of Heat Transfer in Calcined Dolomite Hydration Pocked Bed -

소성Dolomite 수화물계의 축열시스템에 관한 연구 - 소성Dolomite 수화반응층의 전열해석 -

  • 박영해 (영남이공대학 화학공학과) ;
  • 김종식 (계명대학교 공과대학 화학공학과)
  • Published : 2002.03.31

Abstract

To develope chemical heat pump using available energy sources, solar heat and other kinds of waste thermal energy, we have studied the heat transfer rate in cylindrical bed reactor packed with calcined Dolomite. Two dimensional (radial and circumferential) Partial differential equations, concerning heat and mass transfer in packed bed of calcined Dolomite, are solved numerically to describe the characteristics of the reaction of calcined Dolomite and heat transfer. The results obtained by numerical analysis about two dimensional profiles of temperature and conversion of reactant in the packed bed reactor and the amount of exothermic heat released from the reactor are follows. It was found that all of calcined Dolomite packed bed kept the reaction temperature of about 750K throughout the entire part of the bed, immediately after the steam was introduced exothermic reaction of hydration was proceeded from the packed bed inpu to output and from wall side to center. The rate of thermochemical reaction depends on the temperature and concentration and it is also governed by the boundary conditions and heat transfer rate in the particle packed bed.

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References

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