Experiment on surface vapor pressure of liquid desiccant

Sets up an experimental table for dynamically measuring surface vapor pressure of liquid desiccant, and measures the surface vapor pressure of LiCl solution, CaCl₂ solution and mixed solution of LiCl and CaCl₂ in different proportions. The results show that the more the LiCl mass percentage is, the less the surface vapor pressure reduction is by adding LiCl. By a rounded analysis of surface vapor pressure and costs of the mixed solution, considers that the mixed solution of 50% CaCl₂ and 50% LiCl is a liquid desiccant good in both performance and cost.