论文部分内容阅读
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 a kind of energy-saving and environment-friendly refrigeration technology that is suitable for low-grade energy such as solar energy and biomass energy. Taking activated carbon-methanol working fluid pair as the research object, a shell-and-tube adsorbent bed with rectangular branch pipe and punctured membrane adsorbed mass tube dispersed in adsorbent was designed. The diffusion flux and diffusion transfer The relationship between mass coefficient and its mass transfer characteristics were also studied. At the same time, through the analysis of the thermal conductivity of adsorbent bed, the thermal conductivity of the material (stainless steel, aluminum alloy, iron skin) of adsorbed mass tube was measured. The experimental results show that the thermal conductivity of the aluminum alloy (with larger coefficient of expansion) is better, which can be used as the best material for the material of the adsorbed tube, which is helpful to optimize the structure design and improvement of the adsorbent bed in order to promote the mass transfer of the adsorbate. Production technology to provide a theoretical reference.