{"title":"磁性Fe2O3/石墨烯纳米流体在DASC中的传热性能研究","authors":"Mengmeng Ma, Shan Qing, Xiaohui Zhang, Mingci Hu, Zhihui Jia","doi":"10.1007/s10765-025-03542-4","DOIUrl":null,"url":null,"abstract":"<div><p>Magnetic nanofluids have come to attention due to their special physical properties, but their poor thermophysical properties limit their generalized use in DASC. In this study, Fe<sub>2</sub>O<sub>3</sub>/graphene nanoparticles were obtained by attaching magnetic Fe<sub>2</sub>O<sub>3</sub> to graphene sheets with excellent thermophysical properties, which enhanced the thermophysical properties of magnetic nanofluids. The study first analyzed the effects of different reaction conditions on the structural composition of the nanoparticles as well as the thermophysical properties of the nanofluids, and then applied the Fe<sub>2</sub>O<sub>3</sub>/graphene nanofluids in a DASC simulator to analyze the photothermal conversion performance of the nanofluids. The results show that the saturation magnetization strength of the G3 sample reaches 47.47 emu·g<sup>−1</sup>, and the thermal conductivity of the nanofluid after its preparation into a nanofluid reaches 0.642 W·m<sup>−1</sup>·K at 80 °C, whereas the thermal conductivity of the base fluid is only 0.41 W·m<sup>−1</sup>·K. For the photothermal conversion performance, with the increase of the proportion of Fe<sub>2</sub>O<sub>3</sub>, the photothermal conversion efficiency shows a trend of increasing and then decreasing, and the highest value of its photothermal conversion efficiency appears in the G2 sample at 200 ppm, reaching 58.21 %, which is 31.9 % higher than that of the base fluid.</p></div>","PeriodicalId":598,"journal":{"name":"International Journal of Thermophysics","volume":"46 5","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Heat Transfer Performance Study of Magnetic Fe2O3/Graphene Nanofluid in DASC\",\"authors\":\"Mengmeng Ma, Shan Qing, Xiaohui Zhang, Mingci Hu, Zhihui Jia\",\"doi\":\"10.1007/s10765-025-03542-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Magnetic nanofluids have come to attention due to their special physical properties, but their poor thermophysical properties limit their generalized use in DASC. In this study, Fe<sub>2</sub>O<sub>3</sub>/graphene nanoparticles were obtained by attaching magnetic Fe<sub>2</sub>O<sub>3</sub> to graphene sheets with excellent thermophysical properties, which enhanced the thermophysical properties of magnetic nanofluids. The study first analyzed the effects of different reaction conditions on the structural composition of the nanoparticles as well as the thermophysical properties of the nanofluids, and then applied the Fe<sub>2</sub>O<sub>3</sub>/graphene nanofluids in a DASC simulator to analyze the photothermal conversion performance of the nanofluids. The results show that the saturation magnetization strength of the G3 sample reaches 47.47 emu·g<sup>−1</sup>, and the thermal conductivity of the nanofluid after its preparation into a nanofluid reaches 0.642 W·m<sup>−1</sup>·K at 80 °C, whereas the thermal conductivity of the base fluid is only 0.41 W·m<sup>−1</sup>·K. For the photothermal conversion performance, with the increase of the proportion of Fe<sub>2</sub>O<sub>3</sub>, the photothermal conversion efficiency shows a trend of increasing and then decreasing, and the highest value of its photothermal conversion efficiency appears in the G2 sample at 200 ppm, reaching 58.21 %, which is 31.9 % higher than that of the base fluid.</p></div>\",\"PeriodicalId\":598,\"journal\":{\"name\":\"International Journal of Thermophysics\",\"volume\":\"46 5\",\"pages\":\"\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2025-03-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Thermophysics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10765-025-03542-4\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Thermophysics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10765-025-03542-4","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Heat Transfer Performance Study of Magnetic Fe2O3/Graphene Nanofluid in DASC
Magnetic nanofluids have come to attention due to their special physical properties, but their poor thermophysical properties limit their generalized use in DASC. In this study, Fe2O3/graphene nanoparticles were obtained by attaching magnetic Fe2O3 to graphene sheets with excellent thermophysical properties, which enhanced the thermophysical properties of magnetic nanofluids. The study first analyzed the effects of different reaction conditions on the structural composition of the nanoparticles as well as the thermophysical properties of the nanofluids, and then applied the Fe2O3/graphene nanofluids in a DASC simulator to analyze the photothermal conversion performance of the nanofluids. The results show that the saturation magnetization strength of the G3 sample reaches 47.47 emu·g−1, and the thermal conductivity of the nanofluid after its preparation into a nanofluid reaches 0.642 W·m−1·K at 80 °C, whereas the thermal conductivity of the base fluid is only 0.41 W·m−1·K. For the photothermal conversion performance, with the increase of the proportion of Fe2O3, the photothermal conversion efficiency shows a trend of increasing and then decreasing, and the highest value of its photothermal conversion efficiency appears in the G2 sample at 200 ppm, reaching 58.21 %, which is 31.9 % higher than that of the base fluid.
期刊介绍：
International Journal of Thermophysics serves as an international medium for the publication of papers in thermophysics, assisting both generators and users of thermophysical properties data. This distinguished journal publishes both experimental and theoretical papers on thermophysical properties of matter in the liquid, gaseous, and solid states (including soft matter, biofluids, and nano- and bio-materials), on instrumentation and techniques leading to their measurement, and on computer studies of model and related systems. Studies in all ranges of temperature, pressure, wavelength, and other relevant variables are included.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
