海水淡化过程中相变微胶囊相变放热过程分析  

Analysis of Microcapsules Latent Heat Release Process in Desalination

作　　者：郭阳[1] 纪玉龙[1] 苏风民[1] 付本威 马鸿斌[1,2] 

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026 [2]密苏里大学机械航天工程学院,密苏里哥伦比亚65211

出　　处：《水处理技术》2016年第8期19-22,共4页Technology of Water Treatment

基　　金：国家自然科学基金(51376027);中央高校青年科研业务费(3132015030)

摘　　要：为研究相变微胶囊对真空闪蒸过程的影响规律,对相变微胶囊在真空中的放热过程进行数学建模,并采用Ligthill方法对模型求解,分析了相界面位置、热流量、蒸发速度、蒸发量和时间的关系,并对3种相变材料Ba(OH)_2·8H_2O、Na CH_3COO·3H_2O和石蜡进行了放热过程对比分析。结果表明,相变微胶囊在真空环境中石蜡放热速度最快,约为38 ms。热流量Ba(OH)_2·8H_2O最大,约为60 m W。通过蒸发速度和产水量分析,加入Ba(OH)_2·8H_2O相变微胶囊后,放热时间由10 ms提高到67 ms,蒸发量提高84.5%。To study phase change microcapsules latent heat release process in vacuum environment, mathematical model was set up and the Ligthill＇s method was employed to solve the model. Relationship between the solid-liquid interface position, heat flow and evaporation rate, evaporation capacity and time was analyzed. When compared the Ba（OH）2· 8H2O, NaCH3COO·3H2O and paraffin wax, paraffin wax release heat fastest, about 38 ms, and the heat flow of Ba（OH）2·8H2O is largest, about 60 mW. According to the solution, when added Ba（OH）2·8H2O phase change microcapsule, the evaporation time enhanced from 10 ms to 67 ms, and the water productivity increased by 84.5%.

关 键 词：海水淡化 多级闪蒸 相变微胶囊 

分 类 号：P747.7[天文地球—海洋科学]