Rotor‐Stator Spinning Disc Reactor: Characterization of the Single‐Phase Stator‐Side Heat Transfer

The single-phase fluid-stator heat transfer in a rotor-stator spinning disc reactor in dependence on rotational Reynolds number, dimensionless throughput, Prandtl number and aspect ratio is examined. For a parameter range of Reω = 1.1 · 104 - 2.7 · 106, CW = 60 - 450, Pr = 4 - 14 and the two aspect ratios G = 0.0074 and 0.0154, an increase in the stator-side Nusselt number with increasing Reynolds number, Prandtl number and a higher throughput is found. Laminar and turbulent flow regions are observed, which coincide with a throughput- and a rotation-governed heat transfer regime, respectively. A Nusselt correlation to predict the experimental data in the turbulent flow regime within 20 % accuracy was established. An increase in the overall volumetric heat transfer coefficient from 1.27 MW m-3 K-1 to 2.16 MW m-3 K-1 for a rise in Reynolds number from 2.71 · 104 to 4.25 · 105 was observed, being considerably higher compared to conventional tube reactors and twice as large in contrast with a similar rotor-stator setup.