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Al2O3-H2O纳米流体。对水和Al2O3-H2O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Al2O3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。
Al2O-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.
出处
《制冷学报》
CAS
CSCD
北大核心
2010年第1期23-26,共4页
Journal of Refrigeration
基金
国家自然科学基金(20346001)
教育部新世纪优秀人才支持计划资助项目(NCET-04-0826)~~
