A two-energy equation model for dynamic heat and mass transfer in an adsorbent bed using silica gel/water pair

摘要: In this study, the influence of adsorbent bed dimensions, convective heat transfer coefficient between cooling fluid and thermal conductivity solid material on transient distributions gas phase temperature difference, differences in adsorbate concentration predicted by instantaneous equilibrium linear driving force (LDF) models, temperature, pressure inside a sorption system have been investigated numerically for nearly isobaric adsorption process. Silica gel/water is selected as working pair. A two-dimensional local non-equilibrium model has developed that takes into account both internal external mass resistances. The volume averaging method used to derive macro-scale governing conservation equations from micro-scale equations. It found generally, effects parameters difference phases, LDF gradients are negligible small. thickness given length large concentration. On other hand, only slightly affected variation conditions studied.