相变材料微胶囊表面吸附纳米颗粒对传热过程的影响

王亮; 林贵平

相变材料微胶囊表面吸附纳米颗粒对传热过程的影响

王亮,
林贵平

北京航空航天大学航空科学与工程学院,北京 100191

基金项目: 国家自然科学基金(50436020); 中国博士后科学基金(20100470187)

计量
- 文章访问数: 1868
- HTML浏览量: 142
- PDF量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2010-09-02
- 修回日期: 2010-11-12
- 刊出日期: 2011-09-28

Effect of microencapsulated phase change material absorbing nanoparticles on heat transfer

School of Aeronautics Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 通过对相变材料微胶囊、纳米颗粒和基液之间传热过程的仿真计算,分析了纳米颗粒的数目、粒径和热导率对微胶囊与流体之间传热Nu的影响.进而采用数值方法研究了吸附纳米颗粒后,微胶囊-流体传热系数的提高对相变过程的影响,研究结果为纳米颗粒的强化传热机制提供了部分理论依据.
- 相变材料微胶囊 /
- 相变 /
- 纳米颗粒 /
- 纳米流体 /
- 强化传热
Abstract: By numerical simulation of the heat transfer among nanoparticles, microencapsulated phase change material(MPCM) and liquid, the factors such as nanoparticle amount, diameter and thermal conductivity, which affect the MPCM-liquid heat transfer Nusselt number, were analyzed. When MPCM absorbed nanoparticles, the effect of the increase of the MPCM-liquid heat transfer coefficient on the phase change period was also studied numerically, providing a theoretical basis for the mechanism of enhancing the heat transfer with nanoparticle.
- microencapsulated phase change material /
- phase change /
- nanoparticle /
- nanofluid /
- enhanced heat transfer

HTML

参考文献(13)

[1]	Charunyaorn P,Sengupta S,Roy S K.Forced convective heat transfer in microencapsulated phase change material slurries:flow in circular ducts [J].International Journal of Heat and Mass Transfer,1991,34(3):819-833.
[2]	Goel M,Roy S K,Senguta S.Laminar forced convection heat transfer in microencapsulated phase change material suspensions[J].International Journal of Heat and Mass Transfer,1994,37(4):593-604.
[3]	Hu X X,Zhang Y P.Novel insight and numerical analysis of convective heat transfer enhancement with microencapsulated phase change material slurries:laminar flow in a circular tube with constant heat flux[J].International Journal of Heat and Mass Transfer,2002,45(15):3163-3172.
[4]	Alvarado J L,Marsh C,Sohn C,et al.Thermal performance of microencapsulated phase change material slurries in turbulent flow under constant heat flux [J].International Journal of Heat and Mass Transfer,2007,50(9-10):1938-1952.
[5]	Rao Y,Dammel F,Stephan P,et al.Convective heat transfer characteristics of microencapsulated phase change material suspensions in minichannels [J].Heat Mass Transfer,2007,44(2):175-186.
[6]	Eastman J A,Choi U S,Li S,et al.Enhanced thermal conductivity through the development of nanofluids //Proceeding of the Symposium on Nanophase and Nanocomposite Materials Ⅱ.Boston,USA:Material Research Society,1997:3-11.
[7]	Xuan Y M,Li Q.Heat transfer enhancement of nanofluids [J].International Journal of Heat and Fluid Flow,2000,21(1):58-64.
[8]	Zhou L P,Wang B X.Experimental research on the thermophysical properties of nanoparticle suspensions using the quasi-steady state method //Annual Proceedings Chinese Engineering Thermophysics. Dalian: ,2002:889-892.
[9]	Xie H Q,Wang J C,Xi T G,et al.Thermal conductivity enhancement of suspensions containing nanosized alumina particles [J].Journal Applied Physics,2002,91(7):4586-4572.
[10]	Wang L,Lin G P,Chen H S,et al.Convective heat transfer characters of nanoparticle enhanced latent functionally thermal fluid [J].Science in China Series E:Technological Sciences,2009,52(6):1744-1750.
[11]	Keblinski P,Phillpot S R,Choi S U,et al.Mechanisms of heat flow in suspensions of nano-sized particles (nanofluids)[J].International Journal of Heat and Mass Transfer,2002,45(4):855-863.
[12]	刘大有.两相流体动力学[M].北京:高等教育出版社,1993.
[13]	Barigou M,Mankad S,Fryer P J.Heat transfer in two-phase solid-liquid food flows:a review [J].Transactions of IChemE,1998,76(3):3-29.