With a homemade gas-solid heat transfer experimental setup

an experimental study was conducted on gas-solid heat transfer characteristics in a packed bed with sinter particles. The results show that the main factors affecting the gas-solid heat transfer process in sinter bed layer are gas superficial velocity and sinter particle diameter. With the increase of gas superficial velocity and the decrease of sinter particle diameter

the gas-solid heat transfer coefficient increases in the sinter bed. For given gas superficial velocity and sinter particle diameter

higher sinter particle temperature in the bed gives higher gas-solid heat transfer coefficient and lower Nusselt number of heat transfer. Due to the large calculation error

the existing prediction correlations are not suitable for the gas-solid heat transfer process in sinter bed. Based on the method of dimensional analysis

an experimental correlation for describing the gas-solid heat transfer characteristics in sinter bed is obtained by fitting the experimental data

and its mean deviation from experimental data is 4.22%

giving good prediction.