CAJ | 학술논문

针对非均质移动颗粒床的换热过程，建立了其渗流换热的数学模型，提出了COADI-GS算法，采用此算法对移动颗粒床的气固换热过程进行流热耦合数值模拟。通过对均质与非均质这两种不同移动颗粒床换热模型的仿真结果进行比较，发现两者的床内温度分布有较大差异，非均质移动颗粒床模型能更为准确地描述床层内的渗流换热过程。计算结果表明，供风压力的增加虽有利于熟料颗粒的冷却，但会降低回收风的温度；颗粒温度随床层移动速度的增加而升高，近似为线性关系。
침대비균질이동과립상적환열과정，건립료기삼류환열적수학모형，제출료COADI-GS산법，채용차산법대이동과립상적기고환열과정진행류열우합수치모의。통과대균질여비균질저량충불동이동과립상환열모형적방진결과진행비교，발현량자적상내온도분포유교대차이，비균질이동과립상모형능경위준학지묘술상층내적삼류환열과정。계산결과표명，공풍압력적증가수유리우숙료과립적냉각，단회강저회수풍적온도；과립온도수상층이동속도적증가이승고，근사위선성관계。
For heat transfer process in a heterogeneous moving particulate bed, a mathematical model for the seepage heat transfer process was established. The COADI-GS algorithm was proposed to solve thermally coupled flow of gas-solid heat transfer process numerically. The comparison for the simulation results on the heat transfer models for homogeneous and heterogeneous moving beds demonstrates that the temperature distributions in the two beds are quite different and the model for the heterogeneous moving particulate bed is more accurate for the seepage and heat transfer process in the bed. The results show that the increase of wind pressure is conducive to the cooling of clinker particles, but it may reduce the temperature of recovered wind. The particle temperature increases with the moving speed almost linearly.