EAGER/Collaborative Research: Environmentally Responsive, Water Harvesting and Self-Cooling Building Envelopes

EAGER/合作研究：环境响应、集水和自冷却建筑围护结构

• 批准号: 2013993
• 负责人: Jie Yin
• 金额: $ 2.13万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2013993&HistoricalAwards=false
• 关键词: EAGER; Collaborative; Research; Environmentally; Responsive; EAGER; Collaborative; Research; Environmentally; Responsive

Cooling currently consumes about 9 percent of commercial building energy in US, and contributes significantly to urban heat island effects. As population continues to grow and shift to the city, precipitation and temperature patterns have changed so much that they add considerable stress to keep buildings and cities cool. Established architectural treatments are not adaptive to the changing environmental conditions unless a mechanical control is added. This EArly-concept Grant for Exploratory Research (EAGER) project will bring together a highly collaborative and synergistic team of architects, mechanical engineers, and materials scientists to exploit a high risk-high payoff approach, kirigami (cutting and folding), where reconfigurability and cooling processes are materialized in building envelopes that sense and actuate in response to environmental change (e.g. heat, humidity, and wind). The building envelopes will harvest dew water in the early morning and later release it via evaporation, thus, dramatically reducing the cooling load of building elements. The research project will offer a rich and diverse set of problems to excite students at all levels and general public about STEAM, and raise their awareness to address building energy needs. This EAGER project aims to create an innovative building envelope for water condensation and evaporative cooling by considering the ambient temperature, humidity, and wind loads (both indoor and outdoor), as well as the surface property and shape of the novel building materials, achieving the water collection efficiency greater than 35 g/m2.h on aluminum coated polyester sheets, and temperature reduction of at least 2-3oC on daily condensation-evaporation cycles in summer. Specifically, the researchers will 1) perform mesoscale simulation, testing, and energy evaluation on various kirigami structures to identify suitable building envelope designs; 2) Develop simple hygro-thermal models to calculate evapotranspiration in daily condensation-evaporation cycles; 3) Integrate surface coatings to the kirigami structures and test water collection efficiency and temperature change in the daily cycle and comparing with theoretical values. 4) Guided by computation modeling and finite element simulation, optimize the cut patterns to improve applicability of the building envelopes in an outdoor setting. The designed envelopes are potentially transformative: they are passively responsive yet dynamically tunable, hence requiring low maintenance; multifunctional in ways that are not possible in existing building treatments; and generic, scalable, and modularizable.

目前，冷却消耗了美国大约9％的商业建筑能源，并对城市热岛的影响产生了重大贡献。随着人口的不断增长和转移到城市，降水和温度模式发生了很大变化，以至于使建筑物和城市保持凉爽。除非添加机械控制，否则已建立的建筑处理不能适应不断变化的环境条件。 This EArly-concept Grant for Exploratory Research (EAGER) project will bring together a highly collaborative and synergistic team of architects, mechanical engineers, and materials scientists to exploit a high risk-high payoff approach, kirigami (cutting and folding), where reconfigurability and cooling processes are materialized in building envelopes that sense and actuate in response to environmental change (e.g. heat, humidity, and wind).建筑信封将在清晨收获露水，然后通过蒸发释放它，因此大大减少了建筑元素的冷却负荷。该研究项目将为各个层面的学生和公众兴奋的学生提供丰富而多样的问题，并提高他们的意识，以满足建筑能源需求。这个急切的项目旨在通过考虑环境温度，湿度和风负荷（包括室内和室外）以及新颖的建筑材料的表面特性和形状，从而实现水收集效率，从而实现大于35 G/M2的水分，至少在铝制浓度的35 geletres-properity sheert上，将其表面和形状和温度重新制作，从而，至少在铝收集量的情况下实现了至少35 GROPERERITY PRICORES，并将其表面特性和形状以及新颖的建筑材料的表面特性和形状，从而创造了一种创新的建筑物封装，以进行水的凝结和蒸发冷却。夏天的周期。具体而言，研究人员将对各种Kirigami结构进行中尺度模拟，测试和能量评估，以识别合适的建筑包络设计； 2）开发简单的透水热模型来计算每日冷凝 - 蒸发周期中的蒸散量； 3）将表面涂层整合到Kirigami结构，并测试每日周期中的水收集效率和温度变化，并与理论值进行比较。 4）在计算建模和有限元模拟的指导下，优化了切割模式，以提高建筑物信封在室外设置中的适用性。设计的信封具有潜在的变革性：它们是被动地响应灵敏但动态可调的，因此需要低维护；以现有建筑物处理不可能的方式进行多功能；以及通用，可扩展和可模块化的。