GOALI/Collaborative Research: Fundamentals of Microemulsion Boiling: from Interfacial Thermodynamics to Multiphase Heat Transfer

GOALI/合作研究：微乳液沸腾的基础：从界面热力学到多相传热

• 批准号: 1336590
• 负责人: Rui Qiao
• 金额: $ 13.76万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-15 至 2014-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1336590&HistoricalAwards=false
• 关键词: GOALI; Collaborative; Research; Fundamentals; Microemulsion

1336778/1336590PI: Yang/QiaoThe objective of this collaborative GOALI project is to investigate the fundamental mechanisms of nucleate boiling in microemulsions and to evaluate their performance and reliability in industry-relevant cooling systems. The PIs have identified an interesting microemulsion fluid, in which a volatile liquid is dispersed into another immiscible nonvolatile liquid as self-assembled droplets, as a candidate for enhanced phase change heat transfer. It has been observed that the polyalphaolefin-based microemulsion fluids exhibit a pool boiling critical heat flux (CHF) about 80% higher than the base fluid polyalphaolefin. To enable the rational design of microemulsions as heat transfer fluids and to fully exploit their potential in boiling, three interwoven activities will be carried out in this project. First, the PIs will investigate the interfacial thermodynamics of microemulsions at elevated temperatures and understand the energetics of phase change in microemulsions. Second, the PIs will investigate the heat transfer mechanisms of microemulsion boiling by integrating experimental characterization and numerical simulations. The research will focus on the peculiar bubble dynamics that differ greatly from those in classical pool boiling. Third, the PIs will evaluate the performance of microemulsion boiling under industry-relevant settings through collaboration with industrial partners. The proposed research is potentially transformative: by introducing microemulsions as heat transfer fluids, whose boiling behavior differs qualitatively from classical boiling, this work pioneers a radically new approach for enhancing boiling heat transfer. The proposed research helps resolve a long-standing challenge in high-heat flux cooing and can potentially enable new breakthroughs in many technologies limited by current bottlenecks in cooling. In particular, this research can greatly benefit two industrial sectors: thermal management of electronics and industrial heat exchangers. Initiating the GOALI partnership between University of Maryland, Clemson University and their industrial partner will greatly enhance their research capabilities and facilitate the application of microemulsions in industrial thermal management systems. The proposed project will be tied closely with the education activities at University of Maryland and Clemson University through training students in interdisciplinary research, broadening the participation of underrepresented groups in research, and K-12 outreach. When implementing these activities, the PIs will focus on broadening the horizons of students through research at frontiers of engineering sciences and exposing students to real-life industry problems. These activities will be carried by making full use of available institutional resources and by leveraging collaboration with industrial partner.

1336778/1336590PI：该协作目标项目的目标是研究微乳液中核沸腾的基本机制，并评估其在行业相关的冷却系统中的性能和可靠性。 PI已确定了一种有趣的微乳液，其中挥发性液体被分散到另一种不混溶的非挥发性液体中，作为自组装的液滴，是增强相变热传递的候选者。已经观察到，基于多磷脂的微乳液表现出比基础流体多足球蛋白高约80％的池沸腾的临界热通量（CHF）。为了使微乳液作为传热液的合理设计并充分利用其沸腾的潜力，该项目将在该项目中进行三个交织的活动。首先，PI将研究微乳液在升高温度下的微乳液的界面热力学，并了解微乳液相变的能量。其次，PI将通过整合实验表征和数值模拟来研究微乳液沸腾的传热机理。这项研究将集中于与经典池沸腾的奇特气泡动态。第三，PI将通过与工业合作伙伴的合作来评估与行业相关的环境下微乳液沸腾的性能。提出的研究具有潜在的变化：通过将微乳液作为传热液引入，其沸腾的行为与经典沸腾的不同之处在于，这项工作是一种彻底的新方法来增强沸腾的传热。拟议的研究有助于解决高热通量咕co的长期挑战，并有可能在许多技术中受到当前瓶颈限制的许多技术的新突破。特别是，这项研究可以极大地使两个工业领域受益：电子和工业热交换器的热管理。启动马里兰州大学，克莱姆森大学及其工业合作伙伴之间的目标伙伴关系将大大提高其研究能力，并促进微乳液在工业热管理系统中的应用。拟议的项目将通过培训跨学科研究的学生与马里兰州大学和克莱姆森大学的教育活动紧密相关，扩大了代表性不足的研究团体的参与以及K-12的宣传。在实施这些活动时，PI将专注于通过工程科学领域的研究并使学生面临现实生活中的行业问题来扩大学生的视野。这些活动将通过充分利用可用的机构资源并利用与工业合作伙伴的合作进行。