Effect of expanded graphite and carbon nanotubes on the thermal performance of stearic acid phase change materials

2017 ◽  
Vol 52 (20) ◽  
pp. 12370-12379 ◽  
Author(s):  
Xiaomin Cheng ◽  
Ge Li ◽  
Guoming Yu ◽  
Yuanyuan Li ◽  
Jiaqiang Han
Keyword(s):  
Carbon Nanotubes ◽  
Stearic Acid ◽  
Phase Change ◽  
Thermal Performance ◽  
Phase Change Materials ◽  
Expanded Graphite

scholarly journals Preparation and Thermal Performance Enhancement of Low Temperature Eutectic Composite Phase Change Materials Based on Na2SO4·10H2O

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2230 ◽  
Author(s):  
Pumin Hou ◽  
Jinfeng Mao ◽  
Fei Chen ◽  
Yong Li ◽  
Xian Dong
Keyword(s):  
Thermal Conductivity ◽  
Phase Change ◽  
Thermal Performance ◽  
Phase Change Materials ◽  
Performance Enhancement ◽  
Expanded Graphite ◽  
Nucleating Agent ◽  
Thermal Reliability ◽  
Composite Phase Change Materials ◽  
Mass Fractions

In this paper, a series of Na2SO4·10H2O–KCl eutectic mixtures were prepared by adding different mass fractions of KCl (1 wt.%, 3 wt.%, 5 wt.%, or 7 wt.%) to Na2SO4·10H2O. Polyacrylamide (PAM) was proposed as the thickener, sodium tetraborate decahydrate (STD) was proposed as the nucleating agent, and expanded graphite (EG) was proposed as the high thermal conductivity medium for Na2SO4·10H2O–5 wt.% KCl eutectics. The results showed that in Na2SO4·10H2O–5 wt.% KCl eutectics with 5 wt.% PAM and 5 wt.% STD, almost no phase separation occurred, and the degree of supercooling was reduced to 0.4 °C. The thermal performance of Na2SO4·10H2O–5 wt.% KCl composite phase change materials (CPCMs) with varying contents of EG was explored. The results showed that EG could improve the thermal conductivity effectively and that the mass fraction of EG should be no more than 3%, otherwise the crystallization value and supercooling would deteriorate. The thermal reliability of the Na2SO4·10H2O–5 wt.% KCl eutectic CPCMs containing 5 wt.% PAM, 5 wt.% STD, and 3 wt.% EG was investigated, mainly through the ambient temperature, thermal cycling test, and TGA analysis. The results demonstrated that these CPCMs showed perfect thermal reliability.

Preparation and properties of myristic–palmitic–stearic acid/expanded graphite composites as phase change materials for energy storage

Solar Energy ◽  
2014 ◽  
Vol 99 ◽  
pp. 259-266 ◽  
Author(s):  
Xiaojiao Yang ◽  
Yanping Yuan ◽  
Nan Zhang ◽  
Xiaoling Cao ◽  
Cheng Liu
Keyword(s):  
Energy Storage ◽  
Stearic Acid ◽  
Phase Change ◽  
Phase Change Materials ◽  
Expanded Graphite ◽  
Graphite Composites

Effect of MOF derived hierarchical Co3O4/expanded graphite on thermal performance of stearic acid phase change material

Solar Energy ◽  
2018 ◽  
Vol 171 ◽  
pp. 142-149 ◽  
Author(s):  
Dan Li ◽  
Xiaomin Cheng ◽  
Yuanyuan Li ◽  
Haiyuan Zou ◽  
Guoming Yu ◽  
...  
Keyword(s):  
Stearic Acid ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Performance ◽  
Expanded Graphite ◽  
Change Material
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