两级增湿除湿热泵海水淡化系统研究  

Research on Two-Stage Humidification and Dehumidification Heat Pump Desalination System

作　　者：沈九兵 王炳东 周子晗 韦文斌 SHEN Jiubing;WANG Bingdong;ZHOU Zihan;WEI Wenbin(School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212103,China)

机构地区：[1]江苏科技大学能源与动力学院,江苏镇江212103

出　　处：《水处理技术》2023年第12期41-45,共5页Technology of Water Treatment

基　　金：国家自然科学基金项目(52006092)。

摘　　要：为提升增湿除湿海水淡化装置性能,提出一种两级增湿除湿热泵海水淡化系统,由二级增湿器回收利用一级增湿器排出的海水余热,改善海水与湿空气热质交换效果。利用AspenPlus仿真软件分别建立了一级增湿和两级增湿的热泵海水淡化系统模型,针对不同进料海水温度和液气质量比以及热泵制冷剂流量进行多工况仿真研究,根据仿真结果的对比分析,总结得出:随着进料海水温度和液气质量比的增加,两级增湿系统的回收率和造水比均是优于一级增湿系统,且两级增湿系统达到最佳系统性能所需进料海水的温度和循环空气的流量要低于一级增湿系统,表明热泵两级增湿除湿海水淡化技术具有较大的性能提升和广阔的应用前景。In order to improve the performance of the humidification and dehumidification desalination unit,a two-stage humidification and dehumidification heat pump desalination system was proposed.The two-stage humidifier was used to recover and discharge the seawater waste heat from the first-stage humidifier,to improve the heat-mass exchange effect between seawater and wet air.Aspen Plus simulation software was used to establish the models of one-stage and two-stage humidification heat pump seawater desalination systems.Multi-condition simulation studies were carried out for different inlet seawater temperatures,liquid-gas mass ratios and refrigerant flow rate of the heat pump.According to the comparative analysis of simulation results,it is concluded that the recovery rate and water-making ratio of the two-stage humidifier system are better than that of the first-stage humidifier system with the increase of inlet seawater temperature and liquid-gas flow ratio.And the inlet seawater temperature and circulating air flow required for the two-stage humidifier system to achieve optimal system performance are lower than that of the first-stage humidifier system,indicating that the two-stage humidifier dehumidification desalination technology of the heat pump has great performance improvement and broad application prospects.

关 键 词：海水淡化 增湿除湿 ASPENPLUS 两级增湿 

分 类 号：TB611[一般工业技术—制冷工程] P747.1[天文地球—海洋科学]