CAJ | 학술논문

目前对篦冷机熟料多孔介质的研究多采用渗流传热理论，通过达西定律与传热方程联立求解，但模型求解过程复杂，不便于工程应用。本文将圆形截面直管换热理论引入到篦冷机熟料多孔介质单元体的研究中，建立了水泥熟料颗粒大孔隙多孔介质单元体直管等效换热模型。通过直管换热理论的方法和思想求解水泥熟料多孔介质的换热过程，以达到降低求解难度的目的。在保证计算精度的前提下，求解出熟料颗粒与流体温度随时间变化的表达式，利用自主设计实验设备进行实验，实验数据与模型计算结果基本吻合，从而验证了直管等效换热模型的可行性。
목전대비랭궤숙료다공개질적연구다채용삼류전열이론，통과체서정률여전열방정련립구해，단모형구해과정복잡，불편우공정응용。본문장원형절면직관환열이론인입도비랭궤숙료다공개질단원체적연구중，건립료수니숙료과립대공극다공개질단원체직관등효환열모형。통과직관환열이론적방법화사상구해수니숙료다공개질적환열과정，이체도강저구해난도적목적。재보증계산정도적전제하，구해출숙료과립여류체온도수시간변화적표체식，이용자주설계실험설비진행실험，실험수거여모형계산결과기본문합，종이험증료직관등효환열모형적가행성。
For the study on porous cement clinker, researchers solve the equations of Darcy’s law and local no-thermal equilibrium heat transfer based on the theory of heat transfer of fluid flow in porous media. However, the solving process is complex and not convenient for engineering application. A kind of straight pipe equivalent heat transfer model was established by introducing the theory of straight pipe heat exchange to unit body of porous cement clinker. In order to decrease the difficulty of the solving process, the methods and ideas based on the theory of straight pipe heat transfer were used to solve the heat transfer process of porous cement clinker. On the premise of ensuring calculation precision, the changes of temperatures of both clinker and gas with time were obtained. A self-designed experimental equipment was used to verify the temperature expressions at different porosities. The calculation results basically agreed with the experimental data, which verified the feasibility of straight pipe equivalent heat transfer model.