新型溶液除湿新风系统解析模型及NTU性能分析  

Analytical model and NTU performance analysis of new liquid dehumidification fresh air system

作　　者：彭冬根[1] 汤余珍 李寅蒂 PENG Dong-gen;TANG Yu-zhen;LI Yin-di(School of Engineering and Construction,Nanchang University,Nanchang 330031,Jiangxi Province,China)

机构地区：[1]南昌大学工程建设学院,江西南昌330031

出　　处：《化学工程》2023年第4期79-83,94,共6页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(51766010);南昌市高校制冷技术创新团队项目(2018-CXTD-004);江西省研究生创新资金资助项目(YC2021-S139)。

摘　　要：优化节能型空调系统设计可以减少能源消耗。提出一种复合直接蒸发冷却制冷水的溶液除湿新风系统,以办公室为例建立并验证系统设备解析模型,借助Matlab研究主要装置NTU对系统性能的影响。研究表明:在满足室内温湿度的情况下,系统能效比可达到0.65;除湿/再生装置NTU增加到3之后,对系统性能影响不大;除湿器Ⅰ在较大溶液流量下,增大NTU使送风温湿度更容易满足要求,能效比较高;蒸发/表冷器NTU增大使送风温度变化比较明显。系统设计及优化结果为该种溶液除湿新风系统的实际应用提供参考。Optimal design of energy-saving air conditioning system is of great significance to reduce energy consumption.Therefore,a liquid dehumidification fresh air system combining with direct evaporative cooling made cold water was proposed.Taking an office as an example,the analytical model of system equipment was established and verified,and the influence of main devices′NTU on the system performance was studied by Matlab.The result shows that under satisfying indoor temperature and humidity,the system energy efficiency ratio can reach 0.65.When the NTU of the dehumidification/regeneration devices increases to 3,the system performance is little affected.As for dehumidifierⅠ,it is easier to supply air temperature and humidity to meet the requirements by increasing NTU under larger solution flow rate,and energy efficiency ratio is higher.With the increase of NTU of the evaporator and suface cooler,the change of air supply temperature is obvious.The system design and optimization results can provide guideline for the practical application of the liquid dehumidification fresh air system.

关 键 词：能效比 NTU 送风温湿度 溶液除湿 

分 类 号：TU831.5[建筑科学—供热、供燃气、通风及空调工程]