吸附制冷系统吸附床设计及导热性能研究

Design and study of heat transfer performance of new adsorbent bed about solid adsorption refrigeration

吸附式制冷是一种适合于太阳能、生物质能等低品位能源驱动的节能环保型制冷技术。以活性炭-甲醇工质对为研究对象,设计了一种带有分散到吸附剂中的矩形支管、刺孔膜片式吸附质管的壳管式吸附床,定性研究了扩散通量和扩散传质系数之间的关系及其传质特性;同时,通过分析吸附床的导热性能,进行了吸附质管制作材料(不锈钢、铝合金、铁皮)的导热性能测定试验。试验表明,铝合金材质(膨胀系数较大)的导热性能较好,可以作为吸附质管制作材料的最佳材质,有助于为促进吸附质的传质扩散、优化吸附床的结构设计及改进生产工艺等提供理论参考。

Adsorption refrigeration is suitable for solar, biomass and other low - grade energy - driven energy saving refrigera- tion technology. In this paper, activated carbon -methanol working pair for the study, designed to disperse adsorbent rectangular pipes, puncture diaphragm tube shell and tube adsorption bed with a qualitative study of the diffusion flux and diffusion the rela- tionship between the mass transfer coefficient and mass transfer characteristics. At the same time,through the analysis of the ther- mal conductivity of the adsorbent bed, the bed was housing production materials of thermal conductivity measurement test, the re- suits show better thermal conductivity of aluminum alloy, it can be used as adsorbent bed housing best material production materi- als, helps to optimize the structural design of the adsorbent bed to improve production technology to provide a theoretical refer- ence.