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.

建筑和建筑行业占全球能源消耗总量的近三分之一。建筑物总能耗的30%以上可以归因于在寒冷条件下通过窗户散热和在温暖条件下降温时获得热量。因此，通过窗户进行换热管理是降低建筑能耗、提高整体能效的有效途径。该项目将探索为窗户实施混合涂层结构以提供动态太阳能调制器的实际挑战。在炎热的季节，涂层将阻挡太阳红外辐射的传输，而在寒冷的季节，涂层将允许太阳红外辐射透过窗户，将室内空间加热到所需的舒适程度。在这两个季节，涂层将允许可见光的传输逐渐变暗。研究生和本科生将在材料合成和表征、热传输机制和模拟等领域提供独特的多学科学习体验。将为K-12和代表性不足的少数族裔建立教育方案。本研究的目标是将电致变色和热致变色效应结合到一种混合薄膜结构中。这种结构将响应于电或热刺激的变化来控制太阳的传输，从而允许同时或独立地对可见光和红外区中的光进行选择性调制。研究方法包括：(1)研究影响热致变色薄膜光学和金属-绝缘体转变性质的基本因素；(2)探索影响透明导电氧化物薄膜透明和焦耳加热的材料性质；(3)研究聚合物链长和掺杂参数对电致变色薄膜电学和光学性能的影响；(4)阐明离子在电致变色薄膜中的输运机制。这项研究的结果将导致智能窗户涂料能够在所有类型的气候下降低能源消耗，在供暖、通风和空调系统方面节省成本。在这个项目中，私人投资机构将为STEM中代表性不足的群体的本科生和高中生提供教育研究活动。这些实践经验将提高学生的批判性思维、探究、解决问题和团队合作的能力。这些活动还将激发学生对科学的兴趣，并为他们选择STEM职业道路做好准备。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。