| 摘要: |
| 在水介质中悬浮少量的纳米氧化铝颗粒(粒径20nm),通过添加分散剂和超声波振荡,制备成均匀分散的Al_2O_3-H_2O纳米流体.对水和Al_2O_3-H_2O纳米流体的相变蓄冷特性进行了实验比较.结果表明,加入纳米A2O3可降低水的过冷度,缩短结冰时间:在相同的时间内,纳米流体的蓄冷量要大于纯水. |
| 关键词: 工程热物理 Al_2O_3-H_2O纳米流体 过冷度 相变蓄冷 |
| DOI：10.3969/j.issn.0253-4339.年份（4位数字）.月份（2位数字）.文章的起始页码（3位数字） |
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| 基金项目:国家自然科学基金，教育部新世纪优秀人才支持计划资助项目? |
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| Study on Phase-change Cold Storage Characteristics of Al_2O_3-H_2O Nanofluids |
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| Abstract: |
| Al2O3-H2O nanofluids with uniform dispersancy were prepared in which a spot of Al2O3 nanoparticles with a particle size of 20nm suspended in water and the dispersant and supersonic oscillating were added.The cold storage characteristics of the nanofluids and water were experimentally compared.The results show that the nanoparticles in water reduced the subcooling degree of water and the freezing time,and the cold storage capacity of the nanofluids was larger than that of water for the same time. |
| Key words: Engineering thermophysics Al_2O_3-H_2O nanofluids subcooling degree phase-change cold storage |
