化工进展2018，Vol.37Issue(7)：2531-2538,8.DOI:10.16085/j.issn.1000-6613.2017-1971
MWCNT-H2O纳米流体对静态真空闪蒸制冰实验的影响
Effect of ice-making for static vacuum flash system with MWCNT-H2O nanofluid
摘要
Abstract
Multi-walled carbon nanotube(MWCNT)nanoparticles were added into distilled water with hydrophilic TNWDIS of nonionic-type as surfactant. In order to get the stable homogeneous dispersions of MWCNT-H2O nanofluid,ultrasonic generator was used. Under the condition of 100Pa and adsorption,the effects of nanofluid for different mass fractions,particle sizes of MWCNT and different ratios between MWCNT&TNWDIS on static vacuum flash characteristics of ice-making were studied. The results showed that the addition of MWCNT can eliminate the stage of phase-change and shorten the cooling time at the stage of liquid phase. So the supercooling phenomenon appeared earlier. The 20—40nm MWCNT-H2O nanofluid which the concentration ranges from 0.075% to 0.15% can be well-distributed by TNWDIS. When the concentration of MWCNT was 0.1%,the supercooling degree of water decreased by 62.2%,which reached the maximum reduction. The supercooling degree increased with the increase of particle size,while the flash evaporating rate remained at 40%. However,ice packing factor is varied nonlinearly. The optimal dispersive proportion of TNWDIS and 20—40nm MWCNT is 0.5:1. Under this dispersive proportion,the supercooling degree of 0.1% MWCNT-H2O nanofluids remained at 2℃.关键词
纳米粒子/吸附/静态制冰/含冰率/闪蒸率/相变Key words
nanoparticles/absorption/static ice-making system/ice packing factor/flash evaporating rate/phase change分类
能源科技引用本文复制引用
王章飞,章学来,贾潇雅,甘伟,韩兴超,陈跃..MWCNT-H2O纳米流体对静态真空闪蒸制冰实验的影响[J].化工进展,2018,37(7):2531-2538,8.基金项目
国家自然科学基金(51376115)及上海海事大学研究生学术新人培育项目. （51376115）
