Enhanced thermal conductivity of composite phase change materials based on carbon modified expanded perlite

被引：42

作者：

Li, Runjie ^{[1
]}

Zhao, Yajing ^{[2
]}

Xia, Boyang ^{[1
]}

Dong, Zhensheng ^{[3
]}

Xue, Song ^{[1
]}

Huo, Xiaotong ^{[4
]}

Wu, Xiaowen ^{[2
]}

Liu, Yan'gai ^{[2
]}

Huang, Zhaohui ^{[2
]}

Fang, Minghao ^{[2
]}

Min, Xin ^{[2
]}

Zhang, Xiaoguang ^{[5
]}

机构：

[1] China Univ Geosci Beijing, Sch Sci, Beijing 100083, Peoples R China

[2] China Univ Geosci Beijing, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmet Minerals & So, Natl Lab Mineral Mat, Beijing 100083, Peoples R China

[3] China Univ Geosci Beijing, Sch Engn & Technol, Beijing 100083, Peoples R China

[4] PetroChina Beijing Gas Pipeline Co Ltd, Beijing 100101, Peoples R China

[5] Peking Univ, Beijing Key Lab Magnetoelect Mat & Devices, Beijing Innovat Ctr Engn Sci & Adv Technol, Dept Mat Sci & Engn,Coll Engn, Beijing 100871, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2021年 / 261卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Carbon modified expanded perlite; Polyethylene glycol; Composite phase change materials; Thermal conductivity; Chemical stability;

D O I：

10.1016/j.matchemphys.2021.124226

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Phase change materials (PCMs) have attracted growing attention in clean energy storage fields. To improve the thermal conductivity of porous mineral-based composite PCMs (c-PCMs), pretreatment via in-situ carbonization is proposed to fill the pore structure with thermally conductive carbon. After vacuum impregnation, high-performance c-PCMs are obtained, comprising carbon-modified expanded perlite (EPC) and polyethylene glycol (PEG). The modified micro-pores optimize the heat transfer characteristic behaviors in c-PCMs and improve the adsorption stability of PEG. Thus, the load capacity of PEG reaches approximately 73.90 wt% in EPC/PEG cPCMs, providing excellent chemical and structural stability among perlite matrix, carbon modifier and PEG PCMs. The thermal conductivity of the EPC/PEG c-PCMs is 0.521 W/(m.K), which is almost 1.3 times that of the pristine PEG. These performances indicate that the EPC/PEG c-PCMs could be used as an environmentally friendly material for external wall heat-insulation application.

引用

页数：8

共 54 条

[11] Facile flexible reversible thermochromic membranes based on micro/nanoencapsulated phase change materials for wearable temperature sensor [J].

He, Yayue ;

Li, Wei ;

Han, Na ;

Wang, Jianping ;

Zhang, Xingxiang .

APPLIED ENERGY, 2019, 247 :615-629

[12] Enhanced thermal conductivity of phase change materials with ultrathin-graphite foams for thermal energy storage [J].

Ji, Hengxing ;

Sellan, Daniel P. ;

Pettes, Michael T. ;

Kong, Xianghua ;

Ji, Junyi ;

Shi, Li ;

Ruoff, Rodney S. .

ENERGY & ENVIRONMENTAL SCIENCE, 2014, 7 (03) :1185-1192

[13] Thermal Characteristics of Paraffin/Expanded Perlite Composite for Latent Heat Thermal Energy Storage [J].

Karaipekli, A. ;

Sari, A. ;

Kaygusuz, K. .

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, 2009, 31 (10) :814-823

[14] Capric-myristic acid/expanded perlite composite as form-stable phase change material for latent heat thermal energy storage [J].

Karaipekli, Ali ;

Sari, Ahmet .

RENEWABLE ENERGY, 2008, 33 (12) :2599-2605

[15] Thermal characteristics of expanded perlite/paraffin composite phase change material with enhanced thermal conductivity using carbon nanotubes [J].

Karaipekli, Ali ;

Bicer, Alper ;

Sari, Ahmet ;

Tyagi, Vineet Veer .

ENERGY CONVERSION AND MANAGEMENT, 2017, 134 :373-381

[16] Development and thermal performance of an expanded perlite-based phase change material wallboard for passive cooling in building [J].

Kong, Xiangfei ;

Yao, Chengqiang ;

Jie, Pengfei ;

Liu, Yun ;

Qi, Chengying ;

Rong, Xian .

ENERGY AND BUILDINGS, 2017, 152 :547-557

[17] 3D structure fungi-derived carbon stabilized stearic acid as a composite phase change material for thermal energy storage [J].

Li, Chuanchang ;

Xie, Baoshan ;

He, Zhangxing ;

Chen, Jian ;

Long, Yi .

RENEWABLE ENERGY, 2019, 140 :862-873

[18] Preparation and characterization of GO/PEG photo-thermal conversion form-stable composite phase change materials [J].

Li, Min ;

Wang, Chengcheng .

RENEWABLE ENERGY, 2019, 141 :1005-1012

[19] Microencapsulated phase change material (MEPCM) saturated in metal foam as an efficient hybrid PCM for passive thermal management: A numerical and experimental study [J].

Li, W. Q. ;

Wan, H. ;

Jing, T. T. ;

Li, Y. B. ;

Liu, P. J. ;

He, G. Q. ;

Qin, F. .

APPLIED THERMAL ENGINEERING, 2019, 146 :413-421

[20] Design and Preparation of the Phase Change Materials Paraffin/Porous Al2O3@Graphite Foams with Enhanced Heat Storage Capacity and Thermal Conductivity [J].

Li, Yali ;

Li, Jinhong ;

Feng, Wuwei ;

Wang, Xiang ;

Nian, Hongen .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2017, 5 (09) :7594-7603

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