Examining the Thermophysical Impact of Low Concentrated Nanoparticles Hexagonal Boron Nitride Embedded in Phase Change Material for Photo to Thermal Energy Conversion

IF 3.6 4区工程技术 Q3 ENERGY & FUELS

Energy technology Pub Date : 2024-07-30 DOI:10.1002/ente.202400336

Yasir Ali Bhutto, Adarsh Kumar Pandey, Rahman Saidur, Anas Islam, Kalidasan Balasubramanian, Dharam Buddhi, Vineet Veer Tyagi

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引用次数: 0

Abstract

Phase change materials (PCMs) have garnered substantial interest for their use in thermal energy storage. However, restricted thermal conductivity of PCMs hinders their effectiveness in application. The objective of this work is to integrate hexagonal boron nitride (h‐BN) in low concentration with RT38 PCM for thermophysical characterization and photo to thermal energy conversion. The composites are prepared by adding 0.03–0.07 weight percent (wt%) nanoparticles with RT38 PCM through two‐step technique. As per the results, prepared samples remain chemically and thermally stable. Besides, addition of 0.05 wt% of h‐BN nanoparticles with PCM (RT38‐0.05) enhances thermal conductivity to 43%. Additionally, latent heat of melting remains at 137 Jg−1 for 0.05 wt% nanoparticle integrated nanocomposite in comparison to base 140 Jg−1 with slight variation in its melting temperatures. Further, PCM and nanocomposites exhibit zero weight degradation on thermal‐stability analysis up to 160 °C. The research examines thermal energy storage behaviour of base PCM and RT38‐0.05 nanocomposite by applying 800 Wm−2 irradiations. The analysis shows that RT38‐0.05 nanocomposite reaches 49 °C in 9 min, whereas base PCM achieves 43 °C. Thus, the integration of h‐BN nanoparticles in PCM results in improved thermophysical properties and greater conversion of photo to thermal energy.

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研究相变材料中嵌入的低浓度六方氮化硼纳米粒子对光热转换的热物理影响

相变材料（PCM）因其在热能储存方面的应用而备受关注。然而，PCM 的热导率有限，阻碍了其应用的有效性。这项工作的目的是将低浓度六方氮化硼（h-BN）与 RT38 PCM 相结合，以进行热物理表征和热能光电转换。在 RT38 PCM 中添加 0.03-0.07 重量百分比（wt%）的纳米粒子，通过两步法制备复合材料。结果表明，制备的样品保持了化学和热稳定性。此外，添加 0.05 重量百分比的 h-BN 纳米粒子和 PCM（RT38-0.05）可将热导率提高 43%。此外，0.05 wt% 纳米粒子集成纳米复合材料的熔化潜热仍为 137 Jg-1，而基底为 140 Jg-1，熔化温度略有不同。此外，在高达 160 °C 的热稳定性分析中，PCM 和纳米复合材料的重量降解为零。该研究通过 800 Wm-2 的辐照，检验了基本 PCM 和 RT38-0.05 纳米复合材料的热能储存行为。分析表明，RT38-0.05 纳米复合材料在 9 分钟内达到 49 °C，而基本 PCM 为 43 °C。因此，在 PCM 中加入 h-BN 纳米粒子可改善热物理性质，提高光能到热能的转化率。

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来源期刊

Energy technology ENERGY & FUELS-

CiteScore

7.00

自引率

5.30%

发文量

审稿时长

1.3 months

期刊介绍： Energy Technology provides a forum for researchers and engineers from all relevant disciplines concerned with the generation, conversion, storage, and distribution of energy. This new journal shall publish articles covering all technical aspects of energy process engineering from different perspectives, e.g., new concepts of energy generation and conversion; design, operation, control, and optimization of processes for energy generation (e.g., carbon capture) and conversion of energy carriers; improvement of existing processes; combination of single components to systems for energy generation; design of systems for energy storage; production processes of fuels, e.g., hydrogen, electricity, petroleum, biobased fuels; concepts and design of devices for energy distribution.