Study of the Operating Parameters of a Two-Bed Adsorption System: Comparison Between the Silica–Gel–Water and Zeolite–Water Pairs

The aim of this work is to model firstly the different components of a two-bed adsorption cooling system with continuous cold production fed by hot water from biogas or thermal sensors, then in a second step, to the numerical resolution in order to determine the evolution of the various temperatures at the level of the adsorber, the desorber, and to evaluate the COPs. For the validation of the model, the zeolite–water couple was compared with the literature. The results of the analysis show that the COP of zeolite–water is 0.38, lower than that of silica–gel–water which is 0.62. The evaporating temperature reached is between 0 and 5 °C and the cooling temperature between 8.01 and 8.55 °C. This temperature range is acceptable as it is intended for dairy products. The variation in the desorbed fraction is between 1.36 and 1.47 kg/kg s (decrease in the desorbed fraction), during adsorption, it is between −1.1 and −1.05 kg/kg s (increase in the adsorbed fraction). The desorption temperatures reached are 56.8 °C for silica–gel and 51.25 °C for zeolite–water.