以水/乙二醇混合液为基液,加入A12O3,MgO和ZnO纳米颗粒配制得到纳米流体.在自制对流传热性能测试平台上进行基液及纳米流体传热性能的测试.结果表明:同基液相比,随流体流速增大,A12O3纳米流体的传热系数变化不明显,MgO和ZnO纳米流体的传热系数均有提高.层流状态下,随雷诺数增大,三种纳米流体的传热系数都不断增大.当雷诺数为1400时,MgO纳米流体传热系数提高最大,达到了244.0%.良好的强化传热性能,使得氧化物纳米流体今后有望应用在发动机冷却系统中.
参考文献
[1] | S. Lee;S. U. -S. Choi;S. Li;J. A. Eastman .Measuring thermal conductivity of fluids containing oxide nanoparticles[J].Journal of heat transfer: Transactions of the ASME,1999(2):280-289. |
[2] | Nanofluids containing multiwalled carbon nanotubes and their enhanced thermal conductivities[J].Journal of Applied Physics,2003(8):4967-4971. |
[3] | Kang SW;Wei WC;Tsai SH;Yang SY .Experimental investigation of silver nano-fluid on heat pipe thermal performance[J].Applied thermal engineering: Design, processes, equipment, economics,2006(17-18):2377-2382. |
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%