Experimental study of the hydraulic and thermal performances of nano-sized phase change emulsion in horizontal mini-tubes

被引:40
作者
Ma, F. [1 ]
Chen, J. [1 ]
Zhang, P. [1 ]
机构
[1] Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China
基金
中国国家自然科学基金;
关键词
Nano-sized phase change emulsion; Laminar flow; Pressure drop; Heat transfer performance; HEAT-TRANSFER CHARACTERISTICS; CHANGE MATERIAL SLURRIES; CIRCULAR TUBE; THERMOPHYSICAL PROPERTIES; ENERGY STORAGE; LAMINAR-FLOW; FORCED FLOW;
D O I
10.1016/j.energy.2018.02.085
中图分类号
O414.1 [热力学];
学科分类号
摘要
Phase change emulsion (PCE), which is formed through dispersing the phase change material (PCM) particles in the carrying fluid, has attracted many attentions as both the heat transfer fluid and energy storage medium. In the present study, nano-sized PCE is prepared by the D-phase method with n-hexadecane as the PCM. The mass fractions of the PCM are about 10.0 wt% and 20.0 wt% and the average particle size is about 290 nm. The thermo-fluidic performances of the nano-sized PCE in laminar flow are experimentally investigated in the mini-tubes with different inner diameters. The pressure drop of the PCE is compared with that of pure water, and the variation of the friction factor with the Reynolds number is also studied. The local heat transfer coefficient (LHTC) of the PCE gradually reduces to the minimum value and then increases along the flow direction. The heat transfer performance of the PCE is improved with the increase of mass fraction of the PCM and flow velocity, and the enhancement is more significant in smaller tube. In addition, the heating power also shows the effect on the heat transfer performance of the PCE. The heat transfer correlation of the PCE in laminar flow is proposed and the deviation is within +/- 20.0% compared to the experimental results. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码:944 / 953
页数:10
相关论文
共 31 条
[1]  
Anderson R., 2013, P ASME 2013 HEAT TRA
[2]   FORCED-CONVECTION HEAT-TRANSFER IN MICROENCAPSULATED PHASE-CHANGE MATERIAL SLURRIES - FLOW IN CIRCULAR DUCTS [J].
CHARUNYAKORN, P ;
SENGUPTA, S ;
ROY, SK .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1991, 34 (03) :819-833
[3]   Experimental research on laminar flow performance of phase change emulsion [J].
Chen, Binjiao ;
Wang, Xin ;
Zhang, Yinping ;
Xu, Hui ;
Yang, Rui .
APPLIED THERMAL ENGINEERING, 2006, 26 (11-12) :1238-1245
[4]   Preparation and characterization of nano-sized phase change emulsions as thermal energy storage and transport media [J].
Chen, J. ;
Zhang, P. .
APPLIED ENERGY, 2017, 190 :868-879
[5]  
Choi M, 2001, INT J HEAT MASS TRAN, V44, P55, DOI 10.1016/S0017-9310(00)00095-8
[6]   Experimental study of natural convection heat transfer in a microencapsulated phase change material slurry [J].
Diaconu, Bogdan M. ;
Varga, Szabolcs ;
Oliveira, Armando C. .
ENERGY, 2010, 35 (06) :2688-2693
[7]   Comparison of phase change slurries: Physicochemical and thermal properties [J].
Giro-Paloma, Jessica ;
Barreneche, Camila ;
Martinez, Monica ;
Sumiga, Bostjan ;
Cabeza, Luisa F. ;
Ines Fernandez, A. .
ENERGY, 2015, 87 :223-227
[8]   Synthesis, characterization and thermal properties of paraffin microcapsules modified with nano-Al2O3 [J].
Jiang, Xiang ;
Luo, Ruilian ;
Peng, Feifei ;
Fang, Yutang ;
Akiyama, Tomohiro ;
Wang, Shuangfeng .
APPLIED ENERGY, 2015, 137 :731-737
[9]   Thermophysical properties and thermal characteristics of phase change emulsion for thermal energy storage media [J].
Kawanami, Tsuyoshi ;
Togashi, Kenichi ;
Fumoto, Koji ;
Hirano, Shigeki ;
Zhang, Peng ;
Shirai, Katsuaki ;
Hirasawa, Shigeki .
ENERGY, 2016, 117 :562-568
[10]   Field evaluation of microencapsulated phase change material slurry in ground source heat pump systems [J].
Kong, Minsuk ;
Alvarado, Jorge L. ;
Thies, Curt ;
Morefield, Sean ;
Marsh, Charles P. .
ENERGY, 2017, 122 :691-700