Preliminary modeling of overspray particles sedimentation at heat recovery unit in spray booth

Abstract

Overspray sediments settling on the recuperator’s fins cause operational problems. The cross sections of the recuperator’s channels gradually decrease and finally it result in clogging of the recuperator. The layers of sediments cause air flow resistance and also heat transfer resistance. The paper presents preliminary results of sedimentation process modeling. The model of overspray creation takes into account a droplets size and particles concentration in air stream inside extraction ducting. Simulation results are compared with measurements conducted in three commercial spray booths.