Excellence in Research: Dynamic All-Solid-State Hybrid Electro-Thermo Chromic Solar Radiation Modulator for Smart Windows Applications

卓越研究：适用于智能窗户应用的动态全固态混合电热致变色太阳辐射调制器

• 批准号: 2200397
• 负责人: Messaoud Bahoura
• 金额: $ 50万
• 依托单位: Norfolk State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-10-01 至 2025-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2200397&HistoricalAwards=false
• 关键词: Excellence; Research; Dynamic; Solid; State

Buildings and building construction sectors are responsible for almost one-third of total global energy consumption. More than 30% of the total energy consumption in buildings could be attributed to heat loss through windows in cold conditions and heat gain when cooling the building in warm conditions. Therefore, managing heat exchange through windows can prove to be an effective approach to decreasing building energy consumption and improving overall energy efficiency. This project will explore the practical challenges of implementing a hybrid coating structure for windows to provide a dynamic solar modulator. In the hot season, the coating will block the transmission of the solar infrared radiation and in the cold season, the coating will allow solar infrared radiation to transmit through the window and heat the space inside, to the desired level of comfort. In both seasons the coating will allow gradual dimming of the transmission of visible light. Graduate and undergraduate students will be offered unique multidisciplinary learning experiences across fields of materials synthesis and characterization, heat transport mechanism, and simulation. Educational programs will be established for K-12 and underrepresented minority outreach. The goal of this research is to combine the effects of electrochromism and thermochromism into one hybrid thin-film structure. Such structure would control the solar transmission in response to electric or thermal stimuli change allowing for selective modulation of light in the visible and infrared regions simultaneously or independently. The research approach includes: (1) investigating the fundamental factors influencing the optical and metal-to-insulator transition properties in the thermochromic film; (2) exploring the material properties contributing to the transparency and joule heating in transparent conducting oxide film; (3) studying the influence of polymer chain length and doping parameters on the electrical and optical properties of the electrochromic film, and (4) elucidating the ion transport mechanism in the electrochromic film. Outcomes of this research will lead to smart window coatings with the ability to reduce energy consumption in all types of climates, providing cost savings on heating, ventilation, and air-conditioning systems. In this project, the PIs will provide educational research activities to undergraduate and high school students from groups under-represented in STEM. These hands-on experiences will enhance the students' critical thinking, inquiring, problem- solving, and teamwork skills. These activities will also stimulate the students' interest in science and prepare them for choosing STEM career paths.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.

建筑物和建筑构建部门造成了全球总能源消耗的近三分之一。建筑物中总能源消耗的30％以上可能归因于在寒冷条件下通过窗户通过窗户的热量损失，在温暖条件下冷却建筑物时的热量增加。因此，通过窗户管理热量交换可以被证明是降低建筑能源消耗并提高整体能源效率的有效方法。该项目将探讨为Windows实施混合涂料结构的实用挑战，以提供动态太阳能调节器。在炎热的季节，涂层将阻止太阳能红外辐射的传播，在寒冷的季节，涂层将使太阳红外辐射通过窗户传输并在内部将空间加热到所需的舒适度。在这两个季节中，涂层将允许逐渐变形可见光。将在材料综合和表征，热传输机制和模拟领域提供独特的多学科学习经验，并为研究生和本科生提供独特的多学科学习经验。将针对K-12和代表性不足的少数派外展设定教育计划。这项研究的目的是将电色素和热色素的影响结合到一个混合薄膜结构中。这种结构将对电动或热刺激变化的响应来控制太阳能传播，从而可以同时或独立地在可见的和红外区域进行选择性调节。研究方法包括：（1）研究影响热色膜中光学和金属对绝缘体过渡特性的基本因素； （2）探索透明导电膜中透明度和加热的材料特性； （3）研究聚合物链长度和掺杂参数对电染料膜的电和光学性质的影响，以及（4）阐明电染料膜中的离子传输机制。这项研究的结果将导致智能窗口涂料，能够减少所有类型的气候中的能耗，从而节省加热，通风和空调系统的成本。在这个项目中，PI将为来自STEM不足的团体的本科和高中生提供教育研究活动。这些实践经验将增强学生的批判性思维，询问，解决问题和团队合作能力。这些活动还将激发学生对科学的兴趣，并为他们准备选择STEM职业道路的准备。该奖项反映了NSF的法定使命，并被认为是值得通过基金会的知识分子优点和更广泛的影响评估标准来评估的。