屋面通风除湿床吸湿特性正交模拟分析  

Orthogonal Simulation Analysis of the Moisture Adsorption Characteristics of a Roof Ventilated Desiccant Bed

作　　者：柳晟 崔景潭 徐新华[1] 严天 Liu Sheng;Cui Jingtan;Xu Xinhua;Yan Tian(School of Environmental Science&Engineering,Huazhong University of Science and Technology,Wuhan,430074;Zoppas Industries Hangzhou Ltd,Hangzhou,310018;Wuhan University of Technology,Wuhan,430070)

机构地区：[1]华中科技大学环境科学与工程学院,武汉430074 [2]杭州佐帕斯工业有限公司,杭州310018 [3]武汉理工大学,武汉430070

出　　处：《制冷与空调（四川）》2024年第6期760-767,共8页Refrigeration and Air Conditioning

基　　金：国家自然科学基金资助项目“基于自然能的被动再生干燥床与双层调湿结构墙体房间耦合的湿调节机制研究”(52378099);“辐射内嵌并联分离式重力热管的传热机理及性能优化研究”(52208109)。

摘　　要：屋面通风除湿床是一种新型的除湿装置,白天可利用太阳能和自然通风对固体干燥剂进行零能耗的自动再生,夜间则通过风机将室内空气循环流经除湿床,其中的固体干燥剂吸附水蒸气,实现对室内的除湿。介绍了该除湿床的结构及工作原理,分析了其热湿传递过程,采用COMSOL仿真软件建立了其数值模型,设计正交模拟试验对其吸湿性能的影响因素进行了极差分析。研究结果表明,入口空气温度每上升2℃、空气流速每提高0.5m/s、硅胶涂覆厚度每减小1mm,有效吸湿时间分别缩短0.5/0.5/2.6(h);硅胶涂覆厚度每增加1mm,有效吸湿量平均增加约9.8g;入口空气温度每上升2℃或气流速度每提高0.5m/s,平均吸湿量均可上升约0.3g/h。研究结果可为该屋面通风除湿床的设计与应用提供参考。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.

关 键 词：屋面通风除湿床 吸湿特性 有效吸湿时间 正交模拟分析 

分 类 号：TU111.43[建筑科学—建筑理论]