化工学报2011，Vol.62Issue(9)：2433-2439,7.DOI:10.3969/j.issn.0438-1157.2011.09.008
基于热不平衡考虑的溶液除湿/再生传热传质系数(Ⅰ)模型与Le-hD测量法
Heat and mass transfer coefficients of liquid desiccant dehumidification/ regeneration processes with non-thermal equilibrium ( Ⅰ ) Model and Le-hD evaluation method
摘要
Abstract
The liquid dehumidifiers are the key unit for liquid desiccant cooling system (LDCS) and the internal heat and mass transfer of dehumidifier have important influence on the performance of LDCS. Based on the adiabatic dehumidification model, a new model considering non-thermal equilibrium was put forward to evaluate heat and mass transfer coefficients. By simulation calculation, it is found that the outlet parameters of air and liquid from non-thermal equilibrium model agree well with the experimental values, so that the model is better to evaluate heat and mass transfer coefficients. When the heat capacity rate ratio C" j^l. 0, the calculation results for the number of mass transfer units and Lewis factor from non-thermal equilibrium model are much better than those from the adiabatic model, while the two models give almost the same results when C* ^0. 05.关键词
溶液除湿/传热传质系数/热不平衡Key words
liquid desiccant dehumidification/ heat and mass transfer coefficients/ non-thermal equilibrium分类
能源科技引用本文复制引用
彭冬根,曹熔泉,张小松,殷勇高..基于热不平衡考虑的溶液除湿/再生传热传质系数(Ⅰ)模型与Le-hD测量法[J].化工学报,2011,62(9):2433-2439,7.基金项目
国家自然科学基金项目(50976021,51006022) （50976021,51006022）
江西省教育厅青年科学基金项目(GJJ11063). （GJJ11063）
