SBIR Phase II: Two-Phase Microchannel Heat Sink with Porous Layers Lining Channel Inner Walls

这个小型企业创新研究(SBIR)二期项目将开发一种先进的散热器和一个两相泵浦回路，用于冷却大功率激光二极管和其他高热流设备。将在散热器上应用一种先进的涂层，以增强沸腾过程，抑制流动不稳定性，并改善散热器的整体性能。该二期工程的目标是：(1)开发和验证两相热沉模型；(2)开发两相泵送环路的系统级模型；(3)设计和制造热沉和泵送环路系统；(4)在实验室和实际系统上测试原型环路。该技术的主要优点包括高热流能力和等温冷却。该系统将紧凑并设计成可以与高热流密度组件集成在一起。该项目的更广泛影响/商业潜力将是为电子和光电子行业使用的产品(包括紧凑型高功率激光器)提供一种新的散热解决方案。开发的技术将能够处理比那些可以用最先进的商业可用单相冷却器管理的更高的热流。此外，该技术不会使用具有较高全球变暖潜力的制冷剂。该计划还将与一家学术机构的研究人员密切合作，并协助对学生进行基础和应用研究以及新产品开发方面的技术培训。这项研究的结果将通过会议报告和期刊出版物在传热界传播。

This Small Business Innovation Research (SBIR) Phase II project will develop an advanced heat sink and a two-phase pumped loop for cooling high power laser diodes and other high heat flux devices. An advanced coating will be applied to the heat sink to enhance the boiling process, suppress flow instabilities and improve overall heat sink performance. The objectives of this Phase II project are to: (1) develop and validate a two-phase heat sink model, (2) develop a system-level model for a two-phase pumped loop, (3) design and fabricate the heat sink and pumped loop system and (4) test the prototype loop in the laboratory and on an actual system. The key benefits of the technology include high heat flux capability and isothermal cooling. The system will be compact and designed such that it can be integrated with high heat flux components.The broader impact/ commercial potential of this project will be to provide a new cooling solution for dissipating high heat fluxes in products used in the electronics and optoelectronics industries including compact high-power lasers. The technology developed will be capable of handling higher heat fluxes than those that can be managed with state-of-the-art, commercially available single-phase coolers. Moreover, the technology will not use refrigerants that have high Global Warming Potential. This program will also be performed in close collaboration with researchers at an academic institution and aide in the technical training of students in basic and applied research and new product development. The results of this study will be disseminated in the heat transfer community through conference presentations and journal publications.