化工学报2011，Vol.62Issue(11)：3030-3038,9.DOI:10.3969/j.issn.0438-1157.2011.11.008
一种高效吸附床的设计及二维传热数值模拟分析
A high efficient adsorber design and its two-dimensional heat transfer simulation analysis
摘要
Abstract
Adsorption system is a hot research subject recent years with the increasing problems of energy shortage and environmental pollution. In adsorption systems, heat transfer coefficient of the adsorber is the most important, since, with the same amount of uptake circulated in the system, the cycle time will decide the system cooling capacity. In this study, a specially designed, high efficient plate fin type adsorber is developed in a continuous silica gel adsorption refrigeration system to improve its performance. The two-dimension mathematical model for the adsorber is set up. As silica gel and water pair gives very quick adsorption and desorption process, the rate of heat transfer in desorption and adsorption process becomes very crucial for the system. Thus, only the heat transfer is considered in this model to seek the way to improve the process. The effect of the main dimensions of the adsorber is analyzed. The theoretical study demonstrates that the optimum design for this adsorber is: fin pitch 3-6 mm, fin height 6-12 mm and fin thickness 0. 03-0. 15 mm. Experimental results show that by using this design, the adsorption/desorption time can be as short as 420 s. The overall heat transfer coefficient of adsorber can be improved to 370. 8 W · (m2 ·°C)-1 though the heat conductivity of silica gel is only 0. 175 W · (m2 · °C)-1.关键词
吸附制冷/硅胶-水/吸附床优化设计Key words
adsorption refrigeration/silica gel and water/optimum design of adsorber分类
能源科技引用本文复制引用
刘艳玲,王如竹,夏再忠..一种高效吸附床的设计及二维传热数值模拟分析[J].化工学报,2011,62(11):3030-3038,9.基金项目
上海市优秀青年基金项目(B810106200106). （B810106200106）
