Qi Lei, Ji Zhang, Hamid Lashgari, Danyang Wang, Rong Zeng, Sean Li
{"title":"基于 La0.7Ca0.254Sr0.046MnO3 巨磁焦效应的架空输电线路先进防冰和除冰策略。","authors":"Qi Lei, Ji Zhang, Hamid Lashgari, Danyang Wang, Rong Zeng, Sean Li","doi":"10.1021/acsami.4c10999","DOIUrl":null,"url":null,"abstract":"<p><p>Perovskite manganates (AMnO<sub>3</sub>) exhibit diverse structural, thermal, electrical, and magnetic properties. Their strong magnetocaloric effect (MCE) near the Curie temperature (<i>T</i><sub>C</sub>) makes them ideal for magnetic-thermal anti-icing and deicing in power transmission lines. Below <i>T</i><sub>C</sub>, ferromagnetic AMnO<sub>3</sub> produces heat through multiple mechanisms, with the changing magnetic field induced by the strong AC current, causing heat through magnetic hysteresis and eddy currents, alongside the direct MCE. Above <i>T</i><sub>C</sub>, no heating is generated, as MCE is unfavorable, thus preventing additional energy loss at elevated temperatures. In this work, La<sub>0.7</sub>Ca<sub>0.254</sub>Sr<sub>0.046</sub>MnO<sub>3</sub> with <i>T</i><sub>C</sub> close to 0 °C were synthesized by solid-state reaction. It is found that particle size >10 μm is beneficial for a large MCE, based on the results of particle size dependence of MCE. The resulting maximum magnetic entropy change at 277 K is 7.69 J·kg<sup>-1</sup>·K<sup>-1</sup>, and an adiabatic temperature change of 3.87 K at 277 K is achieved under 5 T. The prototype cable is fabricated using a well-established wire drawing process. A climate-simulation chamber is employed for the anti-icing and deicing experiments. The prototype cables demonstrated a strong capability for deicing and anti-icing. This simple and cost-effective prototype cable shows significant potential for mitigating the icing problem of overhead high-voltage power transmission lines.</p>","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":null,"pages":null},"PeriodicalIF":8.3000,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Advanced Anti-icing and Deicing Strategies for Overhead Power Transmission Lines Based on Giant Magnetocaloric Effect of La<sub>0.7</sub>Ca<sub>0.254</sub>Sr<sub>0.046</sub>MnO<sub>3</sub>.\",\"authors\":\"Qi Lei, Ji Zhang, Hamid Lashgari, Danyang Wang, Rong Zeng, Sean Li\",\"doi\":\"10.1021/acsami.4c10999\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Perovskite manganates (AMnO<sub>3</sub>) exhibit diverse structural, thermal, electrical, and magnetic properties. 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The resulting maximum magnetic entropy change at 277 K is 7.69 J·kg<sup>-1</sup>·K<sup>-1</sup>, and an adiabatic temperature change of 3.87 K at 277 K is achieved under 5 T. The prototype cable is fabricated using a well-established wire drawing process. A climate-simulation chamber is employed for the anti-icing and deicing experiments. The prototype cables demonstrated a strong capability for deicing and anti-icing. 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引用次数: 0
摘要
透镜锰酸盐(AMnO3)具有多种结构、热、电和磁特性。它们在居里温度(TC)附近具有很强的磁致效应(MCE),是输电线路磁热防冰和除冰的理想材料。在居里温度以下,铁磁性 AMnO3 会通过多种机制产生热量,其中强交流电流引起的磁场变化会通过磁滞和涡流以及直接的 MCE 产生热量。在 TC 以上,由于 MCE 不利,因此不会产生热量,从而防止了高温下的额外能量损失。在这项工作中,通过固态反应合成了 TC 接近 0 °C 的 La0.7Ca0.254Sr0.046MnO3。根据 MCE 的粒度依赖性结果发现,粒度大于 10 μm 有利于获得较大的 MCE。在 5 T 条件下,277 K 时的最大磁熵变化为 7.69 J-kg-1-K-1,277 K 时的绝热温度变化为 3.87 K。防冰和除冰实验采用了气候模拟室。原型电缆展示了强大的除冰和防冰能力。这种简单而经济的原型电缆在缓解架空高压输电线路的结冰问题方面显示出巨大的潜力。
Advanced Anti-icing and Deicing Strategies for Overhead Power Transmission Lines Based on Giant Magnetocaloric Effect of La0.7Ca0.254Sr0.046MnO3.
Perovskite manganates (AMnO3) exhibit diverse structural, thermal, electrical, and magnetic properties. Their strong magnetocaloric effect (MCE) near the Curie temperature (TC) makes them ideal for magnetic-thermal anti-icing and deicing in power transmission lines. Below TC, ferromagnetic AMnO3 produces heat through multiple mechanisms, with the changing magnetic field induced by the strong AC current, causing heat through magnetic hysteresis and eddy currents, alongside the direct MCE. Above TC, no heating is generated, as MCE is unfavorable, thus preventing additional energy loss at elevated temperatures. In this work, La0.7Ca0.254Sr0.046MnO3 with TC close to 0 °C were synthesized by solid-state reaction. It is found that particle size >10 μm is beneficial for a large MCE, based on the results of particle size dependence of MCE. The resulting maximum magnetic entropy change at 277 K is 7.69 J·kg-1·K-1, and an adiabatic temperature change of 3.87 K at 277 K is achieved under 5 T. The prototype cable is fabricated using a well-established wire drawing process. A climate-simulation chamber is employed for the anti-icing and deicing experiments. The prototype cables demonstrated a strong capability for deicing and anti-icing. This simple and cost-effective prototype cable shows significant potential for mitigating the icing problem of overhead high-voltage power transmission lines.
期刊介绍:
ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.