This is a set of Matlab .fig files corresponding to the figures in the paper 'Fluidized bed gas-solid heat transfer using a CFD-DEM coarse-graining technique' published in Chemical Engineering Science. The dataset consists of the following .fig files whereof a short description is given below: Figure 1: Dimensionless temperature profiles of a fixed bed heat transfer case compared with an analytical solution.Figure 5 A, B and C: Mean particle temperature versus time for three superficial velocities (u0 = 0.14, 0.20 and 0.30 m/s).Figure 6 A, B and C: Instantaneous particle temperature PDF for 5, 15 and 25 seconds for the three studied superficial velocities (u0 = 0.14, 0.20 and 0.30 m/s).Figure 7 A, B and C: Particle temperature over the axial position for the three studied superficial velocities (u0 = 0.14, 0.20 and 0.30 m/s).Figure 11: Time and spatially averaged Nusselt number for the three different superficial velocities over coarse-graining ratio.Figure 12 A, B and C: Normalized Nusselt number probability density functions for three different superficial velocities.