CAREER: Microscale Two-Phase Zeotropic Flow in Energy Systems

职业：能源系统中的微尺度两相非共沸流

• 批准号: 0238841
• 负责人: Laura Schaefer
• 金额: $ 40.01万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2009-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0238841&HistoricalAwards=false
• 关键词: CAREER; Microscale; Two; Phase; Zeotropic

AbstractProposal Number: CTS-0238841Principal Investigator: Laura SchaeferAffiliation: University of PittsburghProposal Title: CAREER: Microscale two-phase zeotropic flow in energy systemssThe PI will investigate the coupled heat transfer and fluid flow behavior of two-phase zeotropic mixtures in micro- and minichannels. Zeotropic mixtures are distinct in that the concentrations of their liquid and vapor phases are continually changing in the two-phase region. The temperature glide between the concentration profiles can cause both component accumulation at the vapor-liquid interface and drastically nonlinear temperature versus enthalpy contours. On the microscale, these behaviors can be exacerbated by the increased effect of intermolecular interactions. The thermodynamic, heat transfer, and fluid flow properties of these mixtures will be studied through theoretical modeling, numerical simulation, and experimental observation. The results of this project will provide the tools needed to create effective miniature vapor compression and absorption cycles, pumping mechanisms, and extraction devices. This research can also be used to increase the efficiency of heat exchangers that utilize micromachined components, which may have a large impact on the costs and emissions generated by energy consumption. These types of energy pplications are appealing to students who are concerned about the environment and to students who are interested in current technology. High school, undergraduate, and graduate students will be introduced to energy systems through a four-tier integrated approach. The proposal has been funded by the Thermal Transport and Thermal Processing Program of the Chemical and Transport Systems Division.

摘要质地编号：CTS-0238841原理研究者：Laura Schaeferaffafliation：匹兹堡大学帕特斯堡大学的职业：职业：能量系统中的显微镜两相的同级二一个相位流动，PI将研究PI的热传热和流动流动，并将其两相的流动性行为和Mickro-nimanky-micro-incrotro-incortro-incortro-incortro-Microtro-and Microdro-和microtro-simicro-and Microdro-and Mickro-and Mickro-and Mickro-and Mickro-and Mickrottert和mickro-Mickro-Microtro-and Mickrotert ancimicro-Mickrottry。偏二旋转的混合物是不同的，因为它们的液体和蒸气相的浓度在两相区域不断变化。浓度剖面之间的温度滑动可能会导致蒸气液体界面处的组件积累，以及急剧的非线性温度与焓轮廓。在显微镜上，这些行为可能会因分子间相互作用的增加而加剧。这些混合物的热力学，传热和流体流量将通过理论建模，数值模拟和实验观察研究。该项目的结果将提供创建有效的微型蒸气压缩和吸收周期，抽水机制和提取装置所需的工具。这项研究还可以用来提高利用微机械组件的热交换器的效率，这可能会对能源消耗产生的成本和排放产生很大的影响。这些类型的能源pplication对关心环境和对当前技术感兴趣的学生的学生有吸引力。高中，本科和研究生将通过四层综合方法介绍到能源系统。 该提案是由化学和运输系统部的热运输和热处理程序资助的。