Comparative Study of an Adsorption System Using Zeolite-Water and Silica-Gel-Water Couples: Modeling and Numerical Resolution on Simulink

Abstract

The objective of this work is to model initially, the different components of a single-bed adsorption system with intermittent cold production operating with hot water coming from either biogas (from methanation of animal organic waste), or a flat sensor. Then, in a second step, to the Simulink resolution to determine the evolutions of the desorption temperatures for the two working couples (Thmax of 180 °C and 220 °C), of the adsorbed fraction (6 kg/s for the zeolite water and 4 kg/s for silica gel-water), COP (coefficient of refrigeration performance) of the order of 0.34 for silica gel-water and 0.4 for zeolite-water. These results were compared to those found in the literature for validation. It should be noted that the heat transfer fluid used is water, which has a cold production range between 0 °C and 10 °C (cooling applications) and that modeling uses the Dormand-Price OD45 method.