Development of thermal energy storage concrete

被引：158

作者：

Dong, Z

Li, ZJ

Zhou, HM

Wu, K

机构：

[1] Tongji Univ, Sch Mat Sci & Engn, State Key Lab Concrete Mat Res, Shanghai 200092, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Civil Engn, Kowloon, Hong Kong, Peoples R China

来源：

CEMENT AND CONCRETE RESEARCH | 2004年 / 34卷 / 06期

基金：

中国国家自然科学基金;

关键词：

image analysis; mercury porosimetry; thermal analysis; concrete; thermal energy storage;

D O I：

10.1016/j.cemconres.2003.10.022

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, a two-step procedure to produce thermal energy storage concrete (TESC) is described. At the first step, thermal energy storage aggregates (TESAs) were made from porous aggregates absorbing phase changing materials (PCMs). At the second step, TESC was produced with a normal mixing method and using TESAs. An adequate amount of PCM can be incorporated into concrete by the two-step procedure. It can be seen experimentally that the energy storage capacity of the TESC was comparable with that of a commercially available PCM. The experimental results showed that the geometrical features of the porous structure of the aggregates had significant effect on their absorbing ability of the PCM. Aggregates with large pore connectivity factor and transport tunnel in boundary part can absorb more PCM. It was also found that the phase changing behavior was affected by the volume fraction of PCM in concrete. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：927 / 934

页数：8

共 16 条

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