化工学报2015，Vol.66Issue(12)：4774-4779,6.DOI:10.11949/j.issn.0438-1157.20150681
溶液除湿中基于水蒸气压差的传质系数
Mass transfer coefficient for liquid dehumidification based on vapor pressure difference
摘要
Abstract
The influencing factors for mass transfer of gas-liquid interface in liquid desiccant system are analyzed. A mass transfer correlation is given in dimensionless form based on the driving force of mass transfer, which is the vapor pressure difference through gas-liquid interface. The constants in the correlation are fitted based on published experimental data of LiCl-H2O-air system in a column packed with cross corrugated cellulose. Another group of published experimental data of LiCl-H2O-air system in a column packed with polyvinyl chloride is used for validating the correlation, with the relative deviation between experimental and calculated results from-10.48% to 5.28%. Moreover, a liquid dehumidification system driven by heat pump is set up, with LiBr-H2O as desiccant and finned tube heat exchanger as packings, and the experimental data are used for validating the correlation. The result shows that the deviation is-1.8%—12.8%. All these results show that the correlation has a high accuracy for mass transfer coefficient prediction in liquid dehumidifier with structured packings.关键词
传质/传质系数关联式/溶液除湿/实验验证/蒸气压差Key words
mass transfer/mass transfer correlation/liquid desiccant/experimental validation/vapor pressure difference分类
能源科技引用本文复制引用
张润霞,王赞社,孟祥兆,王芳,刘丰榕,顾兆林..溶液除湿中基于水蒸气压差的传质系数[J].化工学报,2015,66(12):4774-4779,6.基金项目
国家自然科学基金项目(51478386) （51478386）
"十二五"国家科技支撑计划项目(2011BAJ03B06-1). supported by the National Natural Science Foundation of China (51478386) and the"12th-five" Program of the Ministry of Science and Technology (2011BAJ03B06-1). （2011BAJ03B06-1）
