TY - JOUR
T1 - Mass transfer coefficient for liquid dehumidification based on vapor pressure difference
AU - Zhang, Runxia
AU - Wang, Zanshe
AU - Meng, Xiangzhao
AU - Wang, Fang
AU - Liu, Fengrong
AU - Gu, Zhaolin
N1 - Publisher Copyright:
© All Right Reserved.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - 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.
AB - 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.
KW - Experimental validation
KW - Liquid desiccant
KW - Mass transfer
KW - Mass transfer correlation
KW - Vapor pressure difference
UR - https://www.scopus.com/pages/publications/85084740684
U2 - 10.11949/j.issn.0438-1157.20150681
DO - 10.11949/j.issn.0438-1157.20150681
M3 - 文章
AN - SCOPUS:85084740684
SN - 0438-1157
VL - 66
SP - 4774
EP - 4779
JO - Huagong Xuebao/Journal of Chemical Industry and Engineering (China)
JF - Huagong Xuebao/Journal of Chemical Industry and Engineering (China)
IS - 12
ER -