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Formulation of Nano and Micro-Encapsulated Phase Change Materials with a Solar-Absorbing Metamaterial Shell

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Analyzing a combination of the solar-absorbing functions of metamaterials and the latent heat performance of phase change material (PCM), this paper seeks to formalize the thermal storage behavior of nano and microencapsulated PCMs, including paraffin wax (C13–C24), metallic tin (Sn) and sodium nitrate (NaNO3), using a three-layer nanostructured metal-dielectric-metal metamaterial thin film as the shell of the PCM microcapsule. The mathematical model has been constructed with a variety of parameters describing different metamaterial-encapsulated PCMs, including physical dimensions and operating conditions. The solar-absorbing metamaterial shell not only acts as a PCM container, but also as a solar thermal resource for heating up the PCM while exposed to solar radiation. Compared to traditional polymer-based shells, the high temperature-resistant metamaterial shell can provide significantly enhanced thermal transfer abilities, improved flame retardant capability, and usage as an extra solar power resource in thermo-regulating structures and in a variety of solar energy applications for such areas as construction, transportation, and textiles. Such metamaterial nano and micro-microencapsulated PCMs represent a breakthrough concept in solar energy conversion, thermal storage, and thermal-regulating technologies.
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Keywords: MICROENCAPSULATION; NANOSTRUCTURE; PHASE CHANGE MATERIAL; SOLAR-ABSORBING METAMATERIAL; THERMAL ENERGY STORAGE

Document Type: Research Article

Publication date: December 1, 2016

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  • Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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