章学来1 王章飞1 李跃1 贾潇雅1

(1.上海海事大学蓄冷技术研究所, 上海 201306)

【摘要】配制溶质为Al2O3纳米粒子、黄原胶为分散剂, 经超声波振荡后分散均匀稳定的Al2O3-H2O纳米流体。利用真空动态喷射制冰实验装置, 设定初始压力300 Pa, 研究在有无固体吸附作用、不同纳米流体浓度、不同纳米颗粒粒径和不同供液流量下的真空闪蒸制冰特性。结果表明, 吸附作用对真空制冰系统稳压效果显著且有助于捕捉实验中的水蒸气;当冷却介质温度低于吸附剂初始温度时, 吸附剂有更好的吸附能力但冷却温度不宜过低;纳米流体浓度越大、纳米粒子粒径越小, 更利于制取高含冰率的冰浆;对于同一浓度的纳米流体, 合理控制供液流量可以获得不同含冰率的冰浆;在2% (质量) Na Cl下, 各粒径的纳米流体浓度不宜超过0.05% (质量) 。

【关键词】 纳米粒子; 制冰; 真空; 吸附作用; 含冰率; 相变;


【基金资助】 国家自然科学基金项目 (50976064, 51376115) supported by the National Natural Science Foundation of China (50976064, 51376115) 上海海事大学研究生学术新人培育项目 (YXR2017069) the Academic Training Program for Postgraduate Student of Shanghai Maritime University (YXR2017069)

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This Article


CN: 11-1946/TQ

Vol 69, No. 04, Pages 1332-1340+1808

April 2018


Article Outline



  • 引言
  • 1 实验材料和方法
  • 2 实验结果与讨论
  • 3 结论
  • 参考文献