SOLID CONDUCTION IN LOW DT/DP BEDS OF SPHERES, PELLETS AND RINGS

被引:52
作者
MELANSON, MM
DIXON, AG
机构
[1] Worcester Polytechnic Inst, Dep of, Chemical Engineering, Worcester, MA,, USA, Worcester Polytechnic Inst, Dep of Chemical Engineering, Worcester, MA, USA
关键词
HEAT TRANSFER - Conduction;
D O I
10.1016/0017-9310(85)90071-7
中图分类号
O414.1 [热力学];
学科分类号
摘要
Experimental measurements of effective thermal conductivity and wall heat transfer coefficients were made for stagnant annular fixed beds of low tube-to-particle diameter ratio. A wide range of particle shapes, sizes and thermal conductivity was covered. Empirical correlations are given for the wall-to-solid heat transfer coefficient, which becomes important for low d//t/d//p. Predictive formulas for thermal conductivity were tested, and recommendations made on their use. Both parameters were found to be relatively insensitive to particle shape. The results are applied to the estimation of effective conductivity in the cylindrical beds of industrial practice.
引用
收藏
页码:383 / 394
页数:12
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