摘要
采用"两步法"制备了稳定性良好的γ-Al2O3-DW和CNTs-DW纳米流体,研究了分散剂对纳米流体悬浮稳定性的影响,测试了溶液的热扩散系数和比定压热容,并根据测试数据计算出导热系数。结果表明,分散剂种类和用量对纳米流体的分散有重要影响,相对于基础液体(DW),纳米流体的导热系数和热扩散系数有一定的提高,但比定压热容减小。
Alumina and carbon nanotubes nanofluids with good stability are prepared by the ＂two-step＂ method. The influence of dispersants on the stability of nanofluids is studied. The thermal diffusion coefficient and heat specific ca- pacity of solution are tested, and the thermal conductivity is calculated. Results show that the type and amount of dis- persant have an important impact on the dispersion of nanofluids, and compares with basefluid, the thermal conductivity and thermal diffusion coefficient of nanofluids increase, but the heat capacity decreases.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2010年第12期29-32,共4页
Materials Reports
基金
上海大学研究生创新基金(A.16-0109-09-731)
关键词
纳米流体
分散
导热系数
比定压热容
热扩散系数
nanofluids, disperse, thermal conductivity, heat specific capcity, thermal diffusivity
