Fig. 8 demonstrates that both heating and cooling phases are not perfectly isosteric. Additionally, it can be seen that the adsorbed
mass of water is inversely proportional to the temperature gradient. In fact, during heating phases, the desorption phenomenon occurs, unlike adsorption which happens during the cooling phases. A deviation can be remarked between the initial and the final value of the adsorbed mass. This deviation is probably due to the low cooling rate and to the heat transfer inside the adsorber.