SBIR Phase I: Passive Radiative Composite Material

这个小企业创新研究（SBIR）第一阶段项目的更广泛的影响/商业潜力将通过直接减少大型工业设施、商业建筑、校园和家庭所需的能源消耗来观察。由于精心设计的辐射特性降低了冷却需求，安装用于建筑能源管理的PRC屋顶材料将大大提高联邦和工业设施的可持续性。PRC屋顶的一个补充功能是，它有可能增强超冷表面的冷凝，展示了整合PRC以改善屋顶集水的能力，直接影响关键的供水问题和干旱对区域农业的昂贵影响。冷却屋顶材料的市场需求每年超过7.5亿美元，预计随着最近的能源法规的出台，这一需求还将增长。中国屋面材料有望在一个不断发展的行业中竞争，因为在商业冷屋面产品的最先进选择和在中国概念设计阶段确定的经济制造方法方面，中国屋面材料有了重大改进。机会不仅限于结构热管理，还包括专门用于在无法获得满意供水的孤立地区冷凝大气水蒸气的设施，以及用于紧急集水的便携式设施。拟议的项目将提供将PRC技术过渡到商业部门所需的关键设计、测试和实验验证。基于电磁和热建模的设计包括复合材料选项，能够提供每平方米安装材料超过100瓦的被动辐射通量。这种被动冷却的优势？相对于目前的商用制冷屋面材料？预计将大大节省长期成本，并减少气候控制结构的化石燃料使用。PRC材料的特性在紫外-可见-红外光谱中具有选择性，通过反射辐射光谱的可见和近红外部分，为智能热管理提供了机会，同时在8-13 ìm大气透射窗口中强烈发射。SBIR项目的一个主要目标是优化PRC设计，考虑到全光谱特性，考虑到三个标准：热效率改进、原型制造和大批量制造经济。第二个主要目标是PRC屋顶材料的亚尺度制造和光谱表征。随后演示具有量化被动冷却功率的功能性PRC样品是吸引许可客户和/或商业级制造投资目标的关键。

The broader impact/commercial potential of this Small Business Innovation Research (SBIR) Phase I project will be observed through a direct reduction in the energy consumption required by large industrial facilities, commercial buildings, campuses, and homes. Due to reduced cooling demands as a result of carefully designed radiative properties, the sustainability of federal and industry facilities will be significantly improved with the installation of PRC roofing material for building energy management. A complementary function of PRC roofing is found with the potential for enhanced condensation from the ultra-cool surface, presenting the ability to integrate PRC for improved rooftop water harvesting, directly impacting critical water supply issues and the expensive effects of drought on regional agriculture. The market demand for cool roofing materials has exceeded $750M, annually, and is expected to grow with recent energy regulations. PRC roofing material can expect to compete in a growing industry due to non-trivial improvement over state-of-the-art options in commercial cool roofing products and the economic fabrication method identified in the PRC conceptual design stage. Opportunities extend beyond structural thermal management to facilities dedicated to condensation of atmospheric water vapor in isolated regions without access to satisfactory water supplies, and portable use for emergency water harvesting.The proposed project will provide the critical design, testing, and experimental validation needed to transition PRC technology into the commercial sector. Designs based on electromagnetic and thermal modeling include composite material options capable of providing passive radiative flux of over 100 Watts per square meter of installed material. This passive cooling advantage?relative to current commercial cool roofing materials?is expected to create significant long-term cost-savings and reduction in fossil fuel usage for climate controlled structures. PRC material properties designed to be selective across the ultraviolet-visible-infrared spectrum offer the opportunity for intelligent thermal management through reflection of visible and near-infrared portions of the radiative spectrum, while emitting strongly in the 8-13 ìm atmospheric transmission window. A primary objective of the SBIR project is to optimize PRC designs considering full spectrum properties with three criteria in mind: thermal efficiency improvement, prototype fabrication, and large batch manufacturing economy. The second primary objective is sub-scale fabrication and spectral characterization of the PRC roofing material. Subsequent demonstration of a functional PRC sample with quantified passive cooling power is key to the goals of attracting licensing clients and/or investments for commercial-grade manufacturing.