Experimental analysis of forced convective heat transfer in novel structured packed beds of particles

Measurement of convective heat transfer coefficients in a randomly packed bed of silica gel particles using IHTP analysis

“…Their correlation has a high uncertainty when the Re < 10. Recently, Yang et al [12] conducted a transient experiment to obtain the temperature distribution in structured packed beds of bearing steels that had been heated up to 70°C and then were exposed to the airflow at room temperature (Re > 100). A numerical model was also developed to simulate the transient test data and an inverse analysis was applied to minimize the difference in the experimental and simulated data.…”

Pore Scale Thermal Hydraulics Investigations of Molten Salt Cooled Pebble Bed High Temperature Reactor with BCC and FCC Configurations

“…Pebble to molten salt heat transfer coefficients (Nu number) is defined by (14) and (15). While the experimental data of Yang et al [15] is obtained in the condition of fixed wall temperature.…”

“…While the experimental data of Yang et al [15] is obtained in the condition of fixed wall temperature. In this present work, we discard their data and compare the CFD results with Wakao's equation and KTA's recommended correlation.…”

“…The Ergun's equation [11] and Wakao's relation [12] over-predict the value of pressure drop and Nu number in the case of ordered pebble bed [13][14][15]. It is known that the thermal-hydraulics model in the standardized HTR code THERMIX [16,17] and TINTE [18] is macroscopic porous media model, which calculate local block average temperature of pebble bed and coolant with local Nu number rather than pore scale realistic temperature distribution.…”

Heat Recovery Process from Packed Bed of Hot Slag Plates

“…As the results, it was clarified that the gas-solid heat transfer in the packed bed changes considerably due to the effects of the shape of packed materials. [14][15][16][17][18] In this work, we evaluated the accuracy of the slag heat transfer equations in the slag packed bed and estimated the effect of the shape of the packed materials on the heat transfer coefficient by comparing gas temperature histories in both experiments and simulations. Subsequently, we conducted a pilot-scale slag heat recovery test by using slag from an actual steel mill to verify the feasibility and efficiency of this process.…”