Adsorbent-adsorbate pairs are a key parameter in the performance of adsorptive systems (e.g., chiller, heat pump, and desalination plant). Modeling the adsorption isotherm is essential for the design and performance prediction of the adsorptive system...
Adsorbent-adsorbate pairs are a key parameter in the performance of adsorptive systems (e.g., chiller, heat pump, and desalination plant). Modeling the adsorption isotherm is essential for the design and performance prediction of the adsorptive system because the performance is only influenced by the adsorption isotherm. In this study, the two isotherm models (the hybrid Langmuir-Sips and the Do-Do isotherm models) were proposed to the best fit with the measured isotherms of commercial adsorbents (i.e., silica gel, zeolite, and metal organic framework). First, the equilibrium adsorption isotherms of nitrogen, argon, and water vapor on the adsorbents were investigated to determine the applicability of adsorbents for the adsorptive systems. The equilibrium adsorption isotherm of water vapor on the adsorbents was then evaluated by the proposed isotherm models. Here, the coefficient of determination (R-squared) was used to assess the fitting degree of adsorption isotherm models with the measured isotherms.