SBIR Phase I: Grid-scale electricity storage from waste heat

SBIR 第一阶段：利用废热进行电网规模电力存储

• 批准号: 1843112
• 负责人: Levon Atoyan
• 金额: $ 22.49万
• 依托单位: Active Energy Systems, Inc.
• 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: 2019-02-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1843112&HistoricalAwards=false
• 关键词: SBIR; Phase; Grid; scale; electricity

The broader impact/commercial potential of this Small Business Innovation Research (SBIR) project is to significantly lower the cost and expand the number of addressable markets for ice thermal energy storage. Cost effectively storing energy is imperative to a sustainable future. Storage can provide reliable access to power from intermittent renewable sources, increase the resiliency of the grid to weather events or terrorist attacks, and increase the utilization efficiency of existing assets, deferring costly upgrades. Today, ice thermal storage systems help building owners shift cooling loads from costly peak hours to when electricity is less expensive. Unfortunately the upfront cost of these systems, driven by the large cost of the cooling coil used to generate ice, prevents adoption from many users and has unduly restricted the number of addressable markets for ice thermal storage. Elimination of ice buildup on the cooling coil would reduce the size of the coil, and more importantly significantly lower the cost of these systems. Low-cost ice thermal energy storage could greatly improve the economics for long-duration energy storage technologies such as pumped thermal energy storage.This SBIR Phase I project proposes to translate the discovery of surfaces with zero ice adhesion into a cooling coil that can be integrated into a functioning ice thermal energy storage system. In order to repel ice, these surfaces require complete submersion in an immiscible oil phase, making coil geometry and overall system development challenging. At the beginning of this project, various plate and tube based cooling coil geometries will be systematically prototyped and refined, measuring the freezing and melting heat transfer efficiencies. Different formulations of the surface coating will be tested as well. The most promising candidate geometries will be charged and discharged over multiple cycles as part of an ice thermal energy storage system. The results from cycling will be compared to conventional ice-on-coil technology using metrics such as energy density and heat transfer efficiency. An ice shedding cooling coil, at less than a third of the size of an ice-on-coil system, is expected to deliver improved cooling performance. Demonstration of an ice shedding cooling coil in a functioning ice thermal energy storage system will prove the technology?s readiness to scale.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.

这个小型企业创新研究（SBIR）项目的更广泛的影响/商业潜力是显着降低成本，并扩大冰热能储存的可寻址市场数量。经济有效地储存能源对于可持续的未来至关重要。存储可以提供可靠的间歇性可再生能源供电，提高电网对天气事件或恐怖袭击的弹性，并提高现有资产的利用效率，推迟昂贵的升级。今天，冰蓄冷系统帮助建筑业主将冷却负荷从昂贵的高峰时段转移到电力较便宜的时候。不幸的是，由用于产生冰的冷却盘管的大成本驱动的这些系统的前期成本阻止了许多用户的采用，并且不适当地限制了冰热存储的可寻址市场的数量。消除冷却盘管上的冰积累将减小盘管的尺寸，并且更重要的是显著降低这些系统的成本。低成本的冰蓄能技术可以极大地提高长期蓄能技术的经济性，如泵送式蓄能技术。SBIR第一阶段项目提出将零冰粘附表面的发现转化为冷却盘管，该冷却盘管可以集成到功能性冰蓄能系统中。为了排斥冰，这些表面需要完全浸入不混溶的油相中，这使得线圈几何形状和整个系统开发具有挑战性。在本项目开始时，将系统地对各种基于板和管的冷却盘管几何形状进行原型设计和改进，测量冻结和熔化传热效率。还将测试表面涂层的不同配方。最有前途的候选几何形状将在多个循环中充电和放电，作为冰热能储存系统的一部分。循环的结果将使用能量密度和传热效率等指标与传统的冰盘管技术进行比较。一个冰脱落冷却盘管，在不到三分之一的冰盘管系统的大小，预计将提供更好的冷却性能。一个冰脱落冷却盘管在一个功能冰热能储存系统的示范将证明该技术？该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。