Experimental study of the contact heat transfer coefficient between the covered wall and solid bed in rotary drums

Heat transfer in indirect heated rotary drums filled with monodisperse spheres: Comparison of experiments with DEM simulations

“…Fundamental investigations of the heat transfer within packed and stirred beds were performed [3,27], early simulations were carried out [4,26] and analytical models of the material movement were developed [5][6][7] and extended to macroscopic engineering descriptions of the heat transfer in rotary kilns [8]. The major drawback of approaches approximating the bulk material as a continuum is the assumption of continuous temperature distributions within the material.…”

An image analysis technique for the particle mixing and heat transfer process in a pan coater

“…Herz et al [9] and Liu et al [10] developed a continuous temperature measuring system, in which thermocouples can rotate together with the drum, so that both the radial and circumferential temperature distributions inside the particle bed are measurable. However, the thermocouples are inserted into the particle bed and may disturb the mixing process.…”

“…ACCEPTED MANUSCRIPT 9 is due to data fluctuation caused by random movement of the particles. The regression curves for particle contacts and temperature variance are shown in Fig.5 and Fig.7, respectively.…”

Modeling study of oil shale pyrolysis in rotary drum reactor by solid heat carrier

“…Therefore, a choice of the numerical value for the heat transfer coefficient h is very complicated. Based on experimental data for the fluidized bed near and below minimum fluidization [23,24] as well as on measurements of the heat transfer between the covered wall and solid bed in the rotary drums [11,25], this coefficient was set equal to 100 W/(m 2 · K) for subsequent calculations.…”