Characterization and Reliability of Caprylic Acid-Stearyl Alcohol Binary Mixture as Phase Change Material for a Cold Energy Storage System

被引：19

作者：

Ayaz, Hamza ^{[1
]}

Chinnasamy, Veerakumar ^{[2
]}

Cho, Honghyun ^{[2
]}

机构：

[1] Chosun Univ, Grad Sch, 309 Pilmundaero, Gwangju 61452, South Korea

[2] Chosun Univ, Dept Mech Engn, 309 Pilmundaero, Gwangju 61452, South Korea

来源：

MATERIALS | 2021年 / 14卷 / 23期

基金：

新加坡国家研究基金会;

关键词：

cold thermal energy storage (CTES); phase change material (PCM); fatty acid; fatty alcohol; thermal reliability; corrosion test; LATENT-HEAT STORAGE; THERMAL-PROPERTIES; FATTY-ACIDS; LAURIC ACID; PERFORMANCE;

D O I：

10.3390/ma14237418

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：

This study reports the in-depth investigation of the thermophysical properties and thermal reliability of caprylic acid-stearyl alcohol (CA-SA) eutectic phase change material (PCM) for cooling applications. The phase diagram of CA-SA showed a eutectic point at a 90:10 molar ratio. The onset melting/freezing temperature and latent heat of fusion of caprylic acid-stearyl alcohol from the differential scanning calorimetry (DSC) were 11.4 degrees C/11.8 degrees C and 154.4/150.5 J/g, respectively. The thermal conductivity for the prepared eutectic PCM in the solid phase was 0.267 W/m.K (0 degrees C), whereas, in the liquid phase, it was 0.165 W/m.K (20 degrees C). In addition, the maximum relative percentage difference (RPD) marked at the end of 200 thermal cycles was 5.2% for onset melting temperature and 18.9% for phase change enthalpy. The Fourier transform infrared spectroscopy (FT-IR) result shows that the eutectic PCM holds good chemical stability. Corrosion tests showed that caprylic acid-stearyl alcohol could be a potential candidate for cold thermal energy storage applications.

引用

页数：16

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