导热系数是衡量纳米流体强化换热的最重要的参数,但在不同学者的研究中,对于同一种纳米流体所测得的导热系数却有很大差别.本文针对影响纳米流体导热系数实验测量的因素进行研究,在相同的实验条件下,分别运用Hotdisk导热仪和闪光法导热仪对水基二氧化钛纳米流体的导热系数进行了测量.实验结果表明,用Hotdisk法的测量结果比用闪光法测得的高21％～34％.通过计算分析发现:自然对流是引起纳米流体导热系数测量结果多变的重要原因之一.
参考文献
| [1] | A. Ghadimi;R. Saidur;H. S. C. Metselaar .A review of nanofluid stability properties and characterization in stationary conditions[J].International Journal of Heat and Mass Transfer,2011(17/18):4051-4068. |
| [2] | L. Syam Sundar;Manoj K. Singh .Convective heat transfer and friction factor correlations of nanofluid in a tube and with inserts: A review[J].Renewable & sustainable energy reviews,2013(Apr.):23-35. |
| [3] | 林海斌,张国贤,谢飞.分散剂PEG600对γ-Al2O3纳米流体分散性的影响[J].材料科学与工程学报,2010(03):366-369. |
| [4] | Yanjiao Li;Jing'en Zhou;Simon Tung .A review on development of nanofluid preparation and characterization[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2009(2):89-101. |
| [5] | 彭小飞,俞小莉,夏立峰,罗爱娇.Al2O3纳米粉体悬浮液热物性实验研究[J].材料科学与工程学报,2007(01):52-54. |
| [6] | 彭小飞,俞小莉,余凤芹.低浓度纳米流体比热容试验研究[J].材料科学与工程学报,2007(05):719-722. |
| [7] | 李金凯,刘宗明,赵蔚琳,管延祥.纳米流体导热系数实验研究进展[J].化工新型材料,2010(03):10-12,25. |
| [8] | 杨洁影,陈颖,莫松平.固相纳米复合材料的导热系数预测[J].材料科学与工程学报,2011(04):614-617. |
| [9] | Wang X;Mujumdar A S .A review on nanofluids-part Ⅱ-experiments and applications[J].Brazilian Journal of Chemical Engineering,2008,25(04):631-648. |
| [10] | Seok Pil Jang;Stephen U. S. Choi .Effects of Various Parameters on Nanofluid Thermal Conductivity[J].Journal of heat transfer: Transactions of the ASME,2007(5):617-623. |
| [11] | Wang, X.-j.;Zhu, D.-s.;yang, S. .Investigation of pH and SDBS on enhancement of thermal conductivity in nanofluids[J].Chemical Physics Letters,2009(1/3):107-111. |
| [12] | Narvaez J A .Thermal Conductivity of Poly-Alpha-Olefin (PAO)-Based nanofluids[D].University of Dayton,Chemical Engineering,2010. |
| [13] | Paul G;Chopkar M;Manna I;Das P K .Techniques for measuring the thermal conductivity of nanofluids[J].A review Renew Sust Energ Rev,2010,14(07):1913-1924. |
| [14] | Yi H .Rapid thermal conductivity measurement with a hot disk sensor - Part 1. Theoretical considerations[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2005(1/2):122-129. |
| [15] | Zhu, DS;Li, XF;Wang, N;Wang, XJ;Gao, JW;Li, H .Dispersion behavior and thermal conductivity characteristics of Al2O3-H2O nanofluids[J].Current applied physics: the official journal of the Korean Physical Society,2009(1):131-139. |
| [16] | Thermal conductivities of naked and monolayer protected metal nanoparticle based nanofluids: Manifestation of anomalous enhancement and chemical effects[J].Applied physics letters,2003(14):2931-2933. |
| [17] | Pawel Keblinski;Jeffrey A. Eastman;David G. Cahill .Nanofluids for thermal transport[J].Materials Today,2005(6):36-44. |
| [18] | Parker W J;Jenkins R J;Butler C P;Abbott G L .Flash method of determining thermal diffusivity heat capacity and thermal conductivity[J].Applied Physics,1961,32(09):1679-1684. |
| [19] | Blumm J;Lindemann A;Min S .Thermal characterization of liquids and pastes using the flash technique[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2007(1/2):26-29. |
| [20] | Ian C. Nelson .Flow Loop Experiments Using Polyalphaolefin Nanofluids[J].Journal of thermophysics and heat transfer,2009(4):752-761. |
| [21] | LogT;Gustafsson S E .Transient plane source (TPS)technique for measuring thermal transport properties of building materials[J].Fire and Materials,1995,19(01):43-49. |
| [22] | Hay B;Filtz J R;Hameury J;Rongion L.Uncertainty of thermal diffusivity measurements by laser flash method[A].,2005:1883-1898. |
| [23] | Rudtsch S. .Uncertainty of heat capacity measurements with differential scanning calorimeters[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2002(1/2):17-25. |
| [24] | S. M. S. Murshed;K. C. Leong;C. Yang .Enhanced thermal conductivity of TiO{sub}2-water based nanofluids[J].International Journal of Thermal Sciences,2005(4):367-373. |
| [25] | Churchill S W;Chu H H S .Correlat ing Equations for Laminar and Turbulent Free Convection from a Vertical Plate[J].International Journal of Heat and Mass Transfer,1975,18(11):1323-1329. |
| [26] | Hideaki Nagai;Fabrice Rossignol;Yoshinori Nakata;Takashi Tsurue;Masaaki Suzuki;Takeshi Okutani .Thermal conductivity measurement of liquid materials by a hot-disk method in short-duration microgravity environments[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):117-123. |
| [27] | Ostrach S .Connective phenomena in fluids heated from below[J].Trans J Heat Transfer,1976,98:189-193. |
| [28] | 邓元,魏晓星,何淑淀,蒋剑雄,来国桥.差示扫描量热仪和激光导热仪联用测定材料导热系数[J].杭州师范大学学报（自然科学版）,2010(03):220-222. |
| [29] | 陈方博,方云,吴丽娜.十二烷基硫酸钠浓溶液的胶束行为与其溶液体相行为间的相关性[J].应用化学,2008(04):401-404. |
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