分别以纳米级的CuO、Cu、Al2O3和Al粒子为分散相,以蒸馏水(DW)和丙二醇(PG)为基础液体,制备了体积份额为1～4%的低浓度纳米流体.采用比较量热法测试了不同温度下的纳米流体比热容.结果显示,低浓度纳米流体比热容比基础液体小,并随着粒子体积份额和粒径的增加而减小,随着温度的升高而增加.加和原理计算值小于试验值,不适合预测纳米流体的比热容.
参考文献
| [1] | Choi U S.Enhancing thermal conductivity of fluids with nanoparticles[A].,1995:99-103. |
| [2] | SHINPYO L;CHOI U S.Application of metallic nanoparticles suspensions in advanced cooling systems[A].,1996:227-234. |
| [3] | Lee S;Choi U S .Measuring thermal conductivity of fluids containing oxide nanoparticles[J].Transactions of the ASME,1999,121(05):280-284. |
| [4] | Choi S U S;Yu W;Hull J R.Nanofluids for vehicle thermal management[A].,2001 |
| [5] | Xuan YM.;Li Q. .Heat transfer enhancement of nanofluids[J].International journal of heat and fluid flow,2000(1):58-64. |
| [6] | 谢华清,吴清仁,王锦昌,奚同庚,刘岩.氧化铝纳米粉体悬浮液强化导热研究[J].硅酸盐学报,2002(03):272-276. |
| [7] | Z. S. Hu;J. X. Dong .Study on antiwear and reducing friction additive of nanometer titanium oxide[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,1998(1):92-96. |
| [8] | Vergara O;Heitkanmp K;Lohneysen H.Specific heat of small vanadium particles in the normal and superconducting state[J].Journal of Physics and Chemistry of Solids,1984:251-255. |
| [9] | Dugdale J S;Morrison J A;Patterson D.The effect of particle size on the heat capacity of titanium dioxide[J].Proceedings of the Royal Society A:Mathematical,Physical & Engineering Sciences,1954(224):228-235. |
| [10] | Zhang H;Banfield F.A model for exploring particle size and temperature dependence of excess heat capacities of nano-crystalline substances[J].Nano-Structured Materials,1998(10):185-191. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%