Heat transfer enhancement of neopentyl glycol using compressed expanded natural graphite for thermal energy storage

被引：57

作者：

Wang, Xianglei ^{[1
,2
]}

Guo, Quangui ^{[1
]}

Zhong, Yajuan ^{[3
]}

Wei, Xinghai ^{[1
]}

Liu, Lang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, Key Lab Carbon Mat, Taiyuan 030001, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China

来源：

RENEWABLE ENERGY | 2013年 / 51卷

关键词：

Phase change; Expanded graphite; Neopentyl glycol; Latent heat; Finite element simulation; PHASE-CHANGE MATERIALS; KNO3/NANO3;

D O I：

10.1016/j.renene.2012.09.029

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Neopentyl glycol (NPG) was saturated into the compressed expanded natural graphite (CENG) matrices with different densities in an attempt to increase the thermal performance of NPG for latent heat thermal energy storage (LHTES) application. NPG uniformly disperses in the porous network of the expanded graphite. Measured results indicated that thermal conductivities of the composites can be enhanced 11 -88 times as compared with that of the pure NPG. The latent heat of the NPG/CENG composites increased with the increasing mass ratio of the NPG in the composites. Compared with the pure NPG, the deformation of the composites due to phase change has been greatly reduced. After phase transition, thermal conductivity of the composites decreased slightly. The trends concluded from the finite element simulation are coincident with the trends from the thermal imager. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：241 / 246

页数：6

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