Development of Hollow Steel Ball Macro-Encapsulated PCM for Thermal Energy Storage Concrete

被引：48

作者：

Dong, Zhijun ^{[1
]}

Cui, Hongzhi ^{[1
]}

Tang, Waiching ^{[2
]}

Chen, Dazhu ^{[1
]}

Wen, Haibo ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Civil Engn, Guangdong Prov Key Lab Durabil Marine Civil Engn, Shenzhen 518060, Peoples R China

[2] Univ Newcastle, Sch Architecture & Built Environm, Callaghan, NSW 2308, Australia

来源：

MATERIALS | 2016年 / 9卷 / 01期

基金：

澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

phase change materials; hollow steel ball; macro-encapsulated; thermal properties; mechanical properties; structural-functional integrated concrete; PHASE-CHANGE MATERIALS; MECHANICAL-PROPERTIES; COMPOSITE; BUILDINGS; PARAFFIN; MORTAR;

D O I：

10.3390/ma9010059

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The application of thermal energy storage with phase change materials (PCMs) for energy efficiency of buildings grew rapidly in the last few years. In this research, octadecane paraffin was served as a PCM, and a structural concrete with the function of indoor temperature control was developed by using a macro-encapsulated PCM hollow steel ball (HSB). The macro-encapsulated PCM-HSB was prepared by incorporation of octadecane into HSBs through vacuum impregnation. Test results showed that the maximum percentage of octadecane carried by HSBs was 80.3% by mass. The macro-encapsulated PCM-HSB has a latent heat storage capacity as high as 200.5 J/g. The compressive strength of concrete with macro-encapsulated PCM-HSB at 28 days ranged from 22 to 40 MPa. The indoor thermal performance test revealed that concrete with macro-encapsulated octadecane-HSB was capable of reducing the peak indoor air temperature and the fluctuation of indoor temperature. It can be very effective in transferring the heating and cooling loads away from the peak demand times.

引用

页数：13

共 30 条

[1] Using phase change materials in window shutter to reduce the solar heat gain [J].