Mass transfer coefficient for liquid dehumidification based on vapor pressure difference

ZHANG Runxia; WANG Zanshe; MENG Xiangzhao; WANG Fang; LIU Fengrong; GU Zhaolin

doi:10.11949/j.issn.0438-1157.20150681

您当前的位置：

首页 >

文章列表页 >

Mass transfer coefficient for liquid dehumidification based on vapor pressure difference

更新时间：2025-12-10

- Mass transfer coefficient for liquid dehumidification based on vapor pressure difference
- CIESC Journal Issue 12, Pages: 4774-4779(2015)
- 作者机构：
  
  1. 西安交通大学城市学院,陕西,西安,710018
  2. 西安交通大学人居学院,陕西,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150681
  CLC： K124
- Online First：05 December 2015，
  
  Published：05 December 2015
- 稿件说明：
移动端阅览
ZHANG Runxia, WANG Zanshe, MENG Xiangzhao, et al. Mass transfer coefficient for liquid dehumidification based on vapor pressure difference[J]. CIESC Journal, 2015, (12): 4774-4779.
DOI：

ZHANG Runxia, WANG Zanshe, MENG Xiangzhao, et al. Mass transfer coefficient for liquid dehumidification based on vapor pressure difference[J]. CIESC Journal, 2015, (12): 4774-4779. DOI： 10.11949/j.issn.0438-1157.20150681.

摘要

分析了溶液除湿系统中气液界面间传质过程的影响因素

以气液界面间传质的直接驱动力——溶液表面蒸气压与湿空气中水蒸气分压差为基础

提出了以蒸气压差为变量的传质系数关联式

采用已公开发表的实验数据(LiCl溶液

纤维规整型填料)拟合获取关联式中常数项

得到除湿过程传质系数关联式。采用不同结构填料(LiCl溶液

PVC规整型填料)已公开发表的实验数据对该关联式进行验证

实验值与计算值相对偏差为-10.48%～5.28%。为进一步验证该关联式

搭建了热泵型溶液除湿系统(LiBr溶液

翅片管式热湿交换器)

用获得的实验数据对得到的关联式进行验证

相对偏差为-1.8%～12.8%。3组实验值与计算值的对比表明

以蒸气压差为主要变量的传质系数关联式对规整型填料溶液除湿器传质系数的模拟计算具有较高的计算精度。

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

Keywords

references

Views

344

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Research on prediction of regeneration rate of mine dehumidification solution

Experimental study on heat and mass transfer performance of elliptical tube-fin evaporative condenser

Influence of temperature-pressure coupling characteristics on desorption performance of adsorption refrigeration unit

Comparison of drying performance of compressed air drying system using different pressurized liquid desiccants

A novel compressed air drying method based on pressurized liquid desiccant dehumidifier and experimental verification

Related Author

HUANG Rongting

TAO Yichun

CHEN Jianglin

LI Shihang

YANG Zixi

WANG Shiyuan

LUO Xiangxuan

REN Xianchao

Related Institution

State Key Laboratory of Coal Mine Disaster Prevention and Control, School of Safety Engineering, China University of Mining and Technology

Key Laboratory of Gas and Fire Control for Coal Mines, Ministry of Education， China University of Mining and Technology

National Engineering Research Center for Coal Gas Control, China University of Mining and Technology

Jiangsu Engineering Research Center of Dust Control and Occupational Protection, School of Safety Engineering, China University of Mining and Technology

Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology

⁰