Encapsulation of phase change materials using rice-husk-char

被引:57
作者
Gondora, Wayne [1 ]
Doudin, Khalid [1 ]
Nowakowski, Daniel J. [2 ]
Xiao, Bo [3 ]
Ding, Yulong [4 ]
Bridgwater, Tony [2 ]
Yuan, Qingchun [1 ]
机构
[1] Aston Univ, Aston Mat Ctr, Birmingham B4 7ET, W Midlands, England
[2] Aston Univ, European Bioenergy Res Inst, Sch Engn & Appl Sci, Birmingham B4 7ET, W Midlands, England
[3] Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland
[4] Univ Birmingham, Sch Chem Engn, Birmingham Ctr Energy Storage, Birmingham B15 2TT, W Midlands, England
基金
英国工程与自然科学研究理事会;
关键词
Thermal energy storage; Phase change microcapsules; Rice husk char; Pickering emulsion; Layer-by-layer assembly; THERMAL-ENERGY STORAGE; SHELL; MICROCAPSULES; EMULSIONS; PARAFFIN; MICROENCAPSULATION; COLLOIDOSOMES; CONDUCTIVITY; ENHANCEMENT; MECHANISMS;
D O I
10.1016/j.apenergy.2016.08.102
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper explored a new approach to prepare phase change microcapsules using carbon-based particles via Pickering emulsions for energy storage applications. Rice-husk-char, a by-product in biofuel production, containing 53.58 wt% of carbon was used as a model carbon-based material to encapsulate hexadecane. As a model phase change material, hexadecane was emulsified in aqueous suspensions of rice-husk char nanoparticles. Water soluble polymers poly(diallyldimethyl-ammonium chloride) and poly(sodium styrene sulfonate) were used to fix the rice-husk-char nanoparticles on the emulsion droplets through layer-by-layer assembly to enhance the structural stability of the microcapsules. The microcapsules formed are composed of a thin shell encompassing a large core consisting of hexadecane. Thermal gravimetrical and differential scanning calorimeter analyses showed the phase change enthalpy of 80.9 kJ kg(-1) or 120.0 MJ m(-3). Design criteria of phase change microcapsules and preparation considerations were discussed in terms of desired applications. This work demonstrated possible utilisations of biomass originated carbon-based material for thermal energy recovery and storage applications, which can be a new route of carbon capture and utilisation. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:274 / 281
页数:8
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