Thermophysical properties of Nano-enhanced phase change materials for domestic heating applications
Thermophysical properties of Nano-enhanced phase change materials for domestic heating applications
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DOI：
10.1016/j.est.2021.103794
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发表时间：
2022-02
影响因子：
9.4
通讯作者：
E. J. D'Oliveira;S. C. C. Pereira-S.-C.-C.-Pereira-2147350004;D. Groulx;U. Azimov
中科院分区：
文献类型：
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作者：
E. J. D'Oliveira;S. C. C. Pereira-S.-C.-C.-Pereira-2147350004;D. Groulx;U. Azimov
世界范围内的一个主要问题是由于人口的急剧增长和满足人体热舒适性的要求而导致的全球能源消耗的增加。住宅部门是最大的能源消费者之一，最大的份额是空间和水加热。可再生能源技术是通往更可持续未来的道路，由于技术和经济限制，其潜力尚未充分发挥。使用相变材料（PCM）作为潜热存储介质已经引起了研究人员的兴趣，由于其潜在的和理想的特性，以更广泛的可再生能源的部署。在相变材料中，低导热率是一个显着的缺点，并开发了许多技术来改善它。这篇综述文章主要集中在使用高导电纳米颗粒作为低温相变材料（温度从20 ° C到70 ° C）作为一个有前途的存储介质在住宅应用中的热导率增强技术的过程和方法。本文对纳米增强型相变材料（NEPCM）的制备方法、纳米颗粒对NEPCM热物理性能、稳定性的影响、纳米颗粒的混合传热增强技术、NEPCM的低温应用前景以及该领域的研究差距进行了全面、最新的概述。从这篇综述中获得的主要发现之一是，大多数研究都集中在材料性能上，考虑到应用，而没有研究实际应用中的材料。需要进行更多的研究，实验和数值模拟，在NEPCM国内应用。
A major problem worldwide is the increase in global energy consumption due to the drastic growth in population and requirements to meet human thermal comfort. The residential sector is one of the biggest energy consumers, and the most significant share is attributed to space and water heating. Renewable technologies are the path for a more sustainable future, and their full potential has not yet been achieved due to technical and economic limitations. The use of phase change materials (PCMs) as latent heat storage media has gained interest among researchers due to its potential and desirable characteristics to broader the deployment of renewable energies. In PCMs, low thermal conductivity is a significant drawback, and many techniques were developed to improve it. This review article mainly focuses on the processes and methods of using highly conductive nanoparticles as a thermal conductivity enhancement technique of low-temperature PCMs (temperatures from 20 to 70 °C) as a promising storage media in residential applications. The paper presents a comprehensive and up-to-date overview of the preparation methods used for Nano-enhanced PCMs (NEPCMs), the impact of nanoparticles on the thermophysical properties, stability of NEPCMs, the hybrid heat transfer enhancement techniques using nanoparticles, the promising low-temperature applications with NEPCMs, and the research gaps in the field. One of the main findings obtained from this review is that majority of the studies focused on the material properties with an application in mind, without ever studying the material in the actual application. More studies are required to be conducted, experimentally and numerically, on NEPCM domestic applications.