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| 吸附制冷中化学吸附的滞后圈研究 | |
| 引用本文： | 王丽伟,王如竹,吴静怡,王凯. 吸附制冷中化学吸附的滞后圈研究[J]. 工程热物理学报, 2005, 26(6): 901-904 |
| 作者姓名： | 王丽伟 王如竹 吴静怡 王凯 |
| 作者单位： | 上海交通大学制冷与低温工程研究所,上海,200030;上海交通大学制冷与低温工程研究所,上海,200030;上海交通大学制冷与低温工程研究所,上海,200030;上海交通大学制冷与低温工程研究所,上海,200030 |
| 基金项目： | 国家重点基础研究发展计划(973计划);科技部科研项目 |
| 摘 要： | 文中通过对活性炭-氨以及氯化钙-氨的对比试验,对氯化钙-氨化学吸附的滞后圈进行了研究,结果表明, 化学吸附的滞后现象非常严重,已经超出了气-固吸附的Zigmondy、McBain以及Cohan模型所能解释的范围。对化学吸附的Claperon图进行研究,发现吸附床冷却及加热过程中存在着一段等压冷却以及加热过程,这两个过程与吸附滞后圈相对应。对此现象进行分析,结果表明化学吸附的滞后圈形成原因主要与络合物的稳定常数以及吸附特性相关。 |
| 关 键 词： | 物理吸附 化学吸附 滞后 |
| 文章编号： | 0253-231X(2005)06-0901-04 |
| 修稿时间： | 2005-01-11 |
STUDIES ON CHEMICAL ADSORPTION HYSTERESIS FOR ADSORPTION REFRIGERATION |
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| WANG Li-Wei,WANG Ru-Zhu,WU Jing-Yi,WANG Kai. STUDIES ON CHEMICAL ADSORPTION HYSTERESIS FOR ADSORPTION REFRIGERATION[J]. Journal of Engineering Thermophysics, 2005, 26(6): 901-904 | |
| Authors: | WANG Li-Wei WANG Ru-Zhu WU Jing-Yi WANG Kai |
| Abstract: | The adsorption working pairs of activated carbon-ammonia and calcium chloride-ammonia are tested and compared in order to study the adsorption hysteresis of chemical adsorption. The chemical adsorption hysteresis is very serious in the experiments, and it cannot be explained by the Zigmondy, McBain and Cohan model for gas-solid adsorption. Researches on Claperon figure for chemical adsorption indicate that isobaric cooling phase and isobaric heating phase exist respectively in cooling process and heating process for adsorber; the study on these two isobaric phases shows that the hysteresis phenomena of chemical adsorption is mainly related with stability constant and adsorption characteristics of complex compound. |
| Keywords: | physical adsorption chemical adsorption hysteresis |
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