Experiments on dynamic dehumidification of internally cooling compact solid dehumidifier
-
摘要: 在叉流板翅式换热器结构基础上,研发制作了一种粘贴型内冷却紧凑式固体除湿器,并对这种新型除湿器的性能进行实验研究.除湿器使用硅胶作为吸湿剂,通过导热胶将硅胶颗粒粘贴在除湿器主边的气流通道壁面上.实验分为4组,分别在高湿度和低湿度环境工况下,测试本文研制的除湿器在有内冷却和无内冷却条件下的除湿运行效果以检验内冷却气流对除湿器性能的影响.实验表明,内冷却紧凑式固体除湿器工作性能优良,在除湿器有内冷却的条件下,工作周期内除湿器的平均除湿量显著提高.在高湿度条件下,硅胶在20min内的动态吸湿率可达12.4%,高于目前已知的常压下硅胶对水蒸汽的动态吸湿率.Abstract: An internally cooling compact solid dehumidifier was built and studied experimentally. Silica gel as the desiccant was coated to all the surfaces of primary process airflow channels of the dehumidifier. Experiments on performance of the dehumidifier with and without secondary cooling airflow were carried out under both humid and less humid conditions. The experimental results show that this new type of solid dehumidifier has excellent performance with secondary cooling airflow under both conditions. At humid conditions, the outlet moisture content and temperature of the primary airflow with secondary cooling are both lower than that without secondary cooling. The dynamic water vapor adsorption ratio of the silica gel within the dehumidifier reaches 12.4% after 20 minutes that is higher than currently known performance of silica gel dehumidifier.
-
Key words:
- solid dehumidifier /
- silica gel /
- internally cooling /
- performance experiments
-
[1] 袁卫星,袁修干,杨春信,等.开式固体除湿空调关键部件及系统分析[J]．北京航空航天大学学报,1997,23(5):596-601 Yuan Weixing, Yuan Xiugan, Yang Chunxin, et al. Analysis of open-cycle solid desiccant air conditioning system and its key component—dehumidifier[J]. Journal of Beijing University of Aeronautics and Astronautics, 1997,23(5):596-601(in Chinese) [2] 刘晓茹,袁卫星,于志强．内冷却紧凑式叉流除湿器性能数值模拟与分析 ．太阳能学报,2005,26 (1):110-115 Liu Xiaoru, Yuan Weixing, Yu Zhiqiang. Numerical simulation and analysis on performance of an internally cooling compact dehumidifier[J]. Acta Energiae Solaris Sinica,2005,26(1):110-115(in Chinese) [3] Chuah Y K, Norton P, Kreith F. Transient mass transfer in parallel passage dehumidifiers with and without solid resistance[J]. Transactions of the ASME,1998, 111(12):1038-1044 [4] Waugaman D G, Kini A, Kettleborough C F. A review of desiccant cooling systems[J]. Journal of Energy Resources Technology, 1993(115):1-8 -
点击查看大图
计量
- 文章访问数: 3107
- HTML全文浏览量: 130
- PDF下载量: 845
- 被引次数: 0
下载:
