四效管式降膜蒸发太阳能海水淡化装置性能研究  

PERFORMANCE RESEARCH OF FOUR-EFFECT TUBULAR FALLING FILM EVAPORATION SOLAR DESALINATION DEVICE

作　　者：朱国鹏 李瑞晨 侯静[2] 常泽辉[1,3] Zhu Guopeng;Li Ruichen;Hou Jing;Chang Zehui(College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;College of Building Equipment and Automation,Inner Mongolia Technical College of Construction,Hohhot 010070,China;Engineering Center of Solar Energy Utilization Technology,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特010051 [2]内蒙古建筑职业技术学院建筑设备与自动化学院,呼和浩特010070 [3]内蒙古工业大学太阳能应用技术工程中心,呼和浩特010051

出　　处：《太阳能学报》2020年第6期363-369,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51666013,51966012);内蒙古自治区高等学校科学研究项目(NJZY19263);内蒙古自治区人才开发基金项目(2018);内蒙古自治区高校青年科技英才支持计划(NJYT-18-A12);内蒙古自治区研究生科研创新项目(S20191146Z)。

摘　　要：增加太阳能海水淡化装置的运行效数可显著地提升其热能利用效率和总产水量。为此,该文设计四效竖管式降膜蒸发太阳能海水淡化装置,对比研究运行效数对装置内环形封闭小空间中水蒸气热质传递的影响,理论分析装置内气体介质传热传质特性,采用试验测试数据对理论计算结果进行验证,同时还对不同运行温度条件下,装置各效产水速率、蒸发冷凝温度、竖直方向温度梯度以及排浓海水温度等参数进行测试分析。结果表明,四效海水淡化装置理论产水速率与试验产水速率变化趋势一致,二者最小偏差为6.08%,当运行温度为80℃时,装置总产水速率为0.95 kg/h,第1效产水速率是第4效产水速率的1.59倍,竖直方向温度差值最大为15.3℃,最高排浓海水温度为51.3℃。To add the effect numbers in solar desalination device can facilitate the thermal energy utilization efficiency and total fresh water productivity.Aiming to investigate the influence of the operation effect numbers on the mass and heat transfer in the enclosed space of the tubular falling film evaporation solar desalination device,a novel four-effect device is designed.The water productivity of every effect,evaporation and condensation temperature values,temperature gradient along vertical direction and the temperatures of brine under different operation temperature are tested.The performance of the mass and heat transfer of the device is analyzed.Meanwhile,the numerical results are verified against experimental results.The results indicate that the comparison between the theoretical and experimental results shows a conformity trend of water productivity.Its minimum deviation is about 6.08%.When the operation temperature is 80℃,the hourly water productivity of the device can reach to 0.95 kg,the water productivity of the first-effect is 1.59 times higher than that of the fourth-effect,the maximum temperature difference along vertical direction is 15.3℃,the maximum temperature of the brine is 51.3℃.

关 键 词：海水淡化 太阳能 冷凝 降膜 效数 管式 

分 类 号：TK519[动力工程及工程热物理—热能工程]