I-Corps: Flexible, Low Cost Cooling Technology for LED Lighting

I-Corps：灵活、低成本的 LED 照明冷却技术

• 批准号: 1157904
• 负责人: Satish Kandlikar
• 金额: $ 5万
• 依托单位: Rochester Institute of Tech
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-10-01 至 2012-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1157904&HistoricalAwards=false
• 关键词: Corps; Flexible; Low; Cost; Cooling

Light emitting diode (LED) lighting has the potential to reduce US electricity consumption for lighting significantly within the next two decades, saving billions of dollars. Better thermal management is key to increased commercial adoption of LED lighting as system efficacy, reliability and cost are dependent upon heat dissipation. Commercial LED systems typically use cast aluminum heat sinks for cooling. Heat pipe technology, although well known for enhanced heat dissipation, finds limited commercial use in LED lighting systems because of (a) high cost and (b) limited design flexibility. Heat pipe technology that is (a) highly efficient at heat distribution/dissipation, (b) flexible in terms of design/manufacturing and (c) cost-effective would significantly enhance the commercial viability of LED lighting systems by simultaneously improving system efficacy and reducing cost. Innovations made by the PI in surface enhanced boiling technology are expected to yield highly efficient heat pipes that are flexible in design/manufacturing and cost-effective for use in varied LED lighting systems. The proposed product, which includes an innovative air-cooled condenser integrated with the LED light engine, will be able to provide significantly higher heat removal capability without encountering problems commonly experienced by commercial heat pipes such as dryout or critical heat flux condition.The benefits of LED lighting - superior energy efficiency (lumens output per input watt), long life, consistency and reliability - are highly dependent on thermal management as LEDs generate heat. Unlike conventional lighting devices which dissipate by radiation, heat generated by LEDs must be conducted away from the diodes quickly and efficiently. Inadequate thermal management of heat generated by the LEDs leads to consistent deterioration in light output and shorter LED lifetime. The implementation of this technology will directly address the issues of the LED industry and the nation's energy management mandate. This will allow for more compact LED lighting systems especially for commercial lighting applications, such as street lights and stadium lights, where high heat dissipation rates are necessary. Providing more effective cooling will increase LED life and significantly reduce the high replacement costs in these applications. Ultimately, this project will demonstrate the technical and economic viability of using enhanced heat pipes for LED cooling and accelerate the market adoption of LED lighting for varied applications in commercial and industrial lighting.

发光二极管(LED)照明有可能在未来20年内显著降低美国照明的电力消耗，节省数十亿美元。更好的散热管理是增加LED照明商业采用率的关键，因为系统的效率、可靠性和成本取决于散热。商用LED系统通常使用铸铝散热器进行冷却。热管技术虽然以增强散热而闻名，但由于(A)成本高和(B)设计灵活性有限，在LED照明系统中的商业应用有限。热管技术(A)在散热/散热方面高效，(B)在设计/制造方面灵活，以及(C)具有成本效益，将通过同时提高系统效率和降低成本来显著提高LED照明系统的商业可行性。PI在表面强化沸腾技术方面的创新有望生产出设计/制造灵活、成本效益高的高效热管，用于各种LED照明系统。拟议中的产品包括集成了LED光引擎的创新风冷冷凝器，将能够提供显著更高的散热能力，而不会遇到商业热管常见的问题，如干涸或临界热通量条件。LED照明的优势--卓越的能效(每输入瓦特的流明输出)、寿命长、一致性和可靠性--高度依赖于LED产生热量的热管理。与通过辐射散热的传统照明设备不同，LED产生的热量必须快速有效地从二极管中传导出去。对LED产生的热量进行不适当的热管理会导致光输出的持续恶化和LED寿命的缩短。这项技术的实施将直接解决LED行业和国家能源管理任务的问题。这将允许更紧凑的LED照明系统，特别是商业照明应用，如路灯和体育场灯，其中需要高散热率。提供更有效的冷却将延长LED的使用寿命，并显著降低这些应用中高昂的更换成本。最终，该项目将证明使用增强型热管冷却LED的技术和经济可行性，并加速LED照明在商业和工业照明中的各种应用的市场采用。