Orthogonal Simulation Analysis of the Moisture Adsorption Characteristics of a Roof Ventilated Desiccant Bed
Roof ventilated desiccant bed is a novel dehumidifying device that utilizes solar energy and natural ventilation for zero-energy automatic regeneration of solid desiccant materials. This paper presents the structure and working principles of the desiccant bed,analyzes its thermal and moisture transfer processes,establishes a numerical model using COMSOL simulation software,and conducts orthogonal simulation experiments to analyze the factors influencing its moisture adsorption performance. The results indicate that for every 2℃ increase in inlet air temperature,0.5m/s increase in air velocity,or 1 mm decrease in silica gel coating thickness,the effective adsorption time is reduced by approximately 0.5/0.5/2.6h,respectively. Furthermore,with each 1 mm increase in silica gel coating thickness,the average effective adsorption amount increases by approximately 9.8g. Additionally,a 2℃ increase in inlet air temperature or a 0.5m/s increase in air velocity results in an average rise of approximately 0.3g/h in moisture adsorption. These findings may provide valuable insights for the application of the roof ventilated desiccant bed.
万方数据
维普
