We have chosen a batch geometry of 2x2x2 vials, because all eight vials are in equivalent position, with three sides facing other vials and the remaining three interacting with the exterior. This enables the study of thermal interaction without the effect of position-dependency, which will further enhance batch heterogeneity in larger systems. We investigate a total of six settings, namely two storage temperatures of -10°C (nucleation-limited regime) and of -20°C (cooling-limited regime)