叉流全热回收塔的数值分析及性能优化  

Numerical analysis and performance optimization of cross flow heat recovery tower

作　　者：王新华[1] 

机构地区：[1]中铁四院集团广州设计院有限公司

出　　处：《洁净与空调技术》2016年第3期35-39,共5页Contamination Control & Air-Conditioning Technology

摘　　要：全热回收塔是溶液循环排风热回收系统中的核心部件。在已有的叉流热质交换模型的基础上,通过合理简化,采用数值模型差分离散求解出空气物性参数(温度、含湿量、焓值)、溶液物性参数(温度、等下含湿量、等效焓值)以及传热传质驱动力在回收塔内部的分布情况的数值解。并借助数值模型对叉流全热回收塔进行性能优化改进,即分层布液,改进后全热回收塔的回收效率相对改进前提高了13.6%(双层布液)、15.97%(三层布液)、16.1%(四层布液)。The heat recovery tower is the core component of solution circulation exhaust heat recovery system. In the basis of cross flow heat transfer model, air physical parameters（temperature, moisture content, enthalpy）, solution physical parameters（temperature, and moisture content, equivalent enthalpy） and numerical solution of driving force distribution of heat and mass transfer in recovery tower are solved with differential discrete numerical model by reasonable simplification. By using numerical model to optimize and improve the performance of the cross flow heat recovery tower, that is layered cloth liquid. The improved heat recovery tower efficiency is relatively higher than the previous one, which improved to 13.6%（double cloth liquid）, 15.97%（three layers cloth liquid）, 16.1%（four layers cloth liquid）.

关 键 词：叉流全热回收塔 传热传质 数值模型 性能优化 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]