Study on thermal energy storage properties of bio-based n-dodecanoic acid/fly ash as a novel shape-stabilized phase change material

被引：20

作者：

Naresh, Rachuri ^{[1
]}

Parameshwaran, Rajagopalan ^{[1
]}

Ram, Vijayapuri Vinayaka ^{[2
]}

Srinivas, Purgindla Venkata ^{[3
]}

机构：

[1] Birla Inst Technol & Sci Pilani, Dept Mech Engn, Hyderabad Campus, Hyderabad 500078, India

[2] Birla Inst Technol & Sci Pilani, Dept Civil Engn, Hyderabad Campus, Hyderabad 500078, India

[3] Consortium Techno Solut Pvt Ltd, Hyderabad 500070, India

来源：

CASE STUDIES IN THERMAL ENGINEERING | 2022年 / 30卷

关键词：

Bio-based phase change material; Shape stabilization; Thermal properties; Thermal energy storage; Vacuum impregnation; COMPOSITE; BUILDINGS; PCM;

D O I：

10.1016/j.csite.2021.101707

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In the present study, a novel BSPCM was prepared with the n-dodecanoic acid (or) LA phase change material, which was vacuum impregnated into the porous FA pebbles. The surface morphology of the BSPCM has confirmed the presence of the lauric acid in the porous supporting matrix. The XRD analysis of the BSPCM revealed that the crystalline nature of the PCM was unaltered after impregnation. The surface structure study verified the chemical compatibility between the PCM and supporting material. The DSC results showed that, BSPCM has exhibited a good latent heat of fusion of 68.93 kJ/kg with high thermal energy storage capability of 97.62%. The BSPCM was thermally stable up to 150 degrees C and showed good leakage stability up to 85 degrees C. Thermal reliability of the BSPCM performed for 1000 thermal cycles revealed excellent thermal reliability index of 96.76%. Further, thermal conductivity of BSPCM was found to be 0.1702 W/ mK, which was attributed to the effective impregnation of the PCM into the fly ash pebbles. In total, the developed BSPCM can be a viable candidate for achieving passive thermal energy storage in buildings.

引用

页数：13

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