Simulation of heat and mass transfer in a random packed column operated as a cooling tower using the TUM-WelChem cell model

Abstract

Uncertainties due to maldistribution in the operation of packed columns are one of the major issues in column design. Thus, thorough knowledge of the liquid distribution and the mass transfer processes within the packed bed is necessary. Models able to predict maldistribution are crucial for avoiding extensive experimental investigations. In the present study, the TUM-WelChem cell model is expanded by the simulation of heat and mass transfer in a packed column operated as a cooling tower. The simulation approach is based on experimental data obtained at the Technical University of Munich using a Ø0.634 m random packed column. Temperature profiles and global outlet values of liquid and gas temperatures along with the humidities are evaluated and discussed for the Hiflow® ring 50–6 polypropylene. The presented study provides insight into the applicability of the heat and mass transfer calculation by validating the simulation results with experimental data.