脂肪酸的巨大高压效应:用于替代冷却技术的环保制冷剂

IF 3.2 3区 化学 Q2 CHEMISTRY, PHYSICAL
William Imamura*, Flavio Clareth Colman, Gustavo Hannoun Giudai, Erik Oda Usuda, Cleber Santiago Alves, Silvia Luciana Favaro, Rita de Cássia Colman Simões, Antonio Medina Neto, Lucio Cardozo-Filho, Eduardo Radovanovic, Jean Rodrigo Bocca and Alexandre Magnus Gomes Carvalho, 
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引用次数: 0

摘要

目前大多数冷却系统是基于机械压缩和膨胀过程,使用卤代烃作为主要制冷剂。这些制冷剂导致全球变暖,导致科学界研究和开发环保技术。其中一种替代技术是基于气压效应的。有前景的高压应用材料被分为不同的类别,包括聚合物、金属间化合物、塑料晶体和正构烷烃。在这项研究中,我们报道了一种新的有前途的材料:脂肪酸的高压效应的巨大价值。用直接测量法研究了肉豆蔻酸、棕榈酸和硬脂酸。研究了这种现象的可逆性,并在液固相变附近和远处进行了研究。此外,脂肪酸在固-固过程中达到较大的压热效应值,在液-固转变中达到较大的压热效应值。因此,它产生了广泛的可用温度范围。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Colossal Barocaloric Effect in Fatty Acids: Eco-Friendly Refrigerants for Use in Alternative Cooling Technologies

Most current cooling systems are based on mechanical compression and expansion processes that use halocarbons as the primary refrigerants. These refrigerants contribute to global warming, leading the scientific community to research and develop eco-friendly technologies. One of these alternative technologies is based on the barocaloric effect. Promising materials for barocaloric applications are categorized into different classes, including polymers, intermetallic compounds, plastic crystals, and n-alkanes. In this study, we reported large to colossal values of the barocaloric effect for a new class of promising material: fatty acids. The myristic, palmitic, and stearic acids were investigated by direct measurements. The reversibility of the phenomena was investigated, both near and far from the liquid–solid phase transition. Furthermore, the fatty acids reached large values of the barocaloric effect in solid–solid processes and colossal values in liquid–solid transitions. Thus, it results in a broad range of usable temperatures.

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来源期刊
The Journal of Physical Chemistry C
The Journal of Physical Chemistry C 化学-材料科学:综合
CiteScore
6.50
自引率
8.10%
发文量
2047
审稿时长
1.8 months
期刊介绍: The Journal of Physical Chemistry A/B/C is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.
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