串列加热式增湿除湿海水淡化系统的实验研究  

Experimental Investigation of a Heating With Tandem Desalination System Based on Humidification-Dehumidification Process

作　　者：伍纲[1] 郑宏飞[1] 康慧芳[1] 程鹏[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081

出　　处：《工程热物理学报》2016年第10期2057-2062,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.U1261119);"十二五"农村领域国家科技计划课题(No.2013AA102407-2)

摘　　要：对一种串列式多级加热增湿除湿型太阳能海水淡化装置进行了稳态实验测试,介绍了三级装置的结构和工作过程。选用多孔球作为填充材料来提升蒸发器的传质过程。通过改变不同喷淋温度、进水流量和空气流率等控制参数,研究了不同运行参数下的系统性能。实验结果表明,在实验给定参数范围内,随着进水流量和喷淋温度的增加产水量增加。当运行温度90℃、进水流量为2 t/h,产水量达到182.47 kg/h。在运行温度达到85℃时,性能系数能达到最大值2.65。单位装置体积的产水量达到22kg/(m^3h)。单级加热的性能系数最高达2.27。通过实验发现,串列式多级加热型增除湿海水淡化技术仍有很大的提升空间。A multi-stage heat with tandem desalination system based on humidification and dehumidification（HDH） process was investigated steady state experimentally in this paper.The sketch and principle of an three-stage solar HDH desalination process is given out.The warm water is sprayer upon the porous ball humidifiers,which is simple and effective for enhancing the evaporation process.The spraying water temperature,the feed water flow rate and the air flow rate influencing on the desalination performance were measured.The experimental results indicate that the yield of the system increases with the increasing of the feed water flow rate and spraying temperature under experimental requirements.When the feed water flow rate is 2 t/h and the heating temperature of90℃,the maximum yield can reach 182.47 kg/h.The maximum gain output ratio（GOR） of the system at the heating temperature of 85℃ can reach to about 2.65.The yield per unit volume is calculated as 22 kg/m^3h.The maximum GOR of the heat with one-stage can reach to about2.27.The research proves that the multi-stage heat with tandem HDD has much room to be improved.

关 键 词：太阳能海水淡化 加湿除湿 串列式 多级加热 

分 类 号：TK519[动力工程及工程热物理—热能工程]