Collaborative Research: ISS: Understanding thermal transport across a condensing film by conducting experiments in microgravity

合作研究：国际空间站：通过微重力实验了解冷凝膜上的热传输

• 批准号: 2322929
• 负责人: Kuan-Lin Lee
• 金额: $ 20万
• 依托单位: Advanced Cooling Technologies, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2322929&HistoricalAwards=false
• 关键词: Collaborative; Research; ISS; Understanding; thermal

The utilization of the condensation process can provide significant energy benefits to many industries including those in energy, aerospace, defense, consumer electronics, renewable energy, and water conservation. However, there is a lack of fundamental understanding of the different physical parameters impacting this condensation process limiting the widespread implementation of these systems. Gravity is one of those important parameters that strongly impact energy transport during the condensation process in various terrestrial systems of interest. However, there is no way of isolating gravity in laboratory settings. Understanding the physics behind gravity and its impact on condensing flow is the overarching goal of this project by performing testing utilizing the condensation facility onboard the International Space Station. A better understanding of physics will lead to better control of terrestrial systems and also impact engineering design decisions.Condensation increases system efficiency and reduces system footprint compared to air or liquid single-phase systems. However, the barrier to designing an efficient condensation heat rejection device stems from a lack of fundamental understanding of the influence of parameters like gravity on the liquid-vapor interfacial behavior and the corresponding thermal transport. The central hypothesis of this research is that if gravity is isolated, the impact of interfacial waviness and turbulence on thermal transport in the condensing film can be captured with an integrated experimental and computational approach. Experiments are planned to utilize the condensation module for heat transfer onboard the International Space Station’s Flow Boiling and Condensation Experiment facility and supplemental testing is planned in Earth gravity conditions. In addition, the research team plans to supplement the experiments with high-fidelity CFD simulations and modeling to capture the impact of the two-phase interfacial behavior on thermal transport. The broader impact objectives are to improve thermal transport modeling for processes with phase change, thus helping the two-phase flow and heat transfer community develop efficient condensers for a variety of industrial applications. In the education and outreach plan, the team will develop a module for Case Western Reserve University (CWRU)’s NSF-supported Introduction to Innovation program as well as set up a joint Two-Phase Flow Workshop between CWRU and Advanced Cooling Technologies.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

冷凝过程的利用可以为许多行业提供显着的能源效益，包括能源、航空航天、国防、消费电子、可再生能源和节水等行业。然而，人们对影响这种冷凝的不同物理参数缺乏基本的了解。重力是限制这些系统广泛应用的重要参数之一，在各种感兴趣的陆地系统中，重力传输过程受到强烈影响。然而，在实验室环境中无法隔离重力。重力背后的物理学及其对冷凝流的影响是该项目的首要目标，通过在国际空间站上测试冷凝设施，更好地了解物理学将有助于更好地控制地面系统，并影响工程设计决策。与空气或液体单相系统相比，提高了系统效率，并减少了系统占地面积。然而，设计高效冷凝排热装置的障碍源于对重力等参数对系统影响的缺乏基本了解。这项研究的中心假设是，如果重力被隔离，则可以通过综合实验和计算方法来捕获界面波纹和湍流对冷凝膜中热传输的影响。计划利用国际空间站流动沸腾和冷凝实验设施上的冷凝模块进行传热，并计划在地球重力条件下进行补充测试。此外，研究小组还计划对实验进行补充。通过高保真 CFD 模拟和建模来捕捉两相界面行为对热传输的影响，更广泛的影响目标是改进相变过程的热传输建模，从而帮助两相流和传热界。为各种工业应用开发高效冷凝器 在教育和推广计划中，该团队将为凯斯西储大学 (CWRU) 的 NSF 支持的创新入门项目开发一个模块，并建立一个联合两阶段项目。 CWRU之间的流程研讨会该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。