Modelling heat and mass transfer in a seawater scrubber for marine application: some improvements based on a CFD simulation

This paper reports on a numerical simulation of the heat and mass transfer process occurring in a seawater scrubber for marine application. The aim of the work is to make a comparison with the results obtained from a previous simple model, where the liquid flow was modeled as a plug flow (the injection angle was neglected and all the droplets were assumed to be identical). A DPM (Discrete Phase Model) has been chosen for this case, where droplets trajectory, velocity and temperature is calculated as first step of the CFD simulation. A real scrubber prototype has been simulated. Preliminary results of the CFD model are presented in terms of temperature distributions for diluted and condensed phases, as well as of distributions of size and residence time of the droplets.