移動する高温固体粒子層から気体により熱を回収するシステムの過渡特性 : 第2報, 過渡特性を支配する因子についての検討

概要

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Moving-bed heat exchangers have been used extensively in many industries, for instance, for waste-heat recovery from hot sintered metal of the steel manufacturing process. It has been reported in the previous paper that if the particle diameters are large, the effect of temperature distribution between surface and center of the particles on the characteristics of these systems is not negligible and has to be taken into account. In addition, three dimensionless parameters (NTU, Cr and Bi) governing the characteristics of these systems are described. In this paper, the effects of these three parameters on transient responses of the gas outlet temperature, subject to step changes of the belt moving speed and the gas fiow rate, are investigated. It has been found that the transient responses are mutually dependent upon these three parameters. Furthermore, the relationship beetween these parameters and the approximated time constant of the transient responses is also described.
社団法人日本機械学会の論文
1992-08-25