Small Equipment: Infrared Thermography System for Temperature Measurements in Microchannel/Minichannel and Droplet

0853832Kumar将采购一套红外热成像系统，配备一个(3至5微米)红外相机、一个50 mm镜头、从-10摄氏度到350摄氏度的热像定标，以及一个4X显微镜套件，能够为50至100微米的物体成像。该设备包括同步模拟和数字视频以及同步能力，温度灵敏度和光斑大小分别为0.02摄氏度和10微米。该系统将用于研究(A)燃料电池、(B)生物燃料液滴蒸发和(C)流动沸腾中的传输现象。智能优点：热成像系统将被用来在空间和时间上解析微通道和小通道内以及微滴上的温度分布。该设备将与现有的速度测量仪器(Micro PIV)和物种测量仪器(可调谐二极管激光吸收光谱和激光诱导荧光)一起使用。由此产生的实验数据将有助于解开与这些复杂的两相系统相关的复杂物理机制，并验证世界各地正在开发的模型。更广泛的影响：将开发课程、课程和讲习班，以教育学生和专业人员在应用于燃料电池、生物燃料和电子封装冷却等领域的红外热像仪和激光诊断学领域。本科生将在实验设计和高级测量策略的关键领域接受培训，包括高级设计项目和现有NSF REU项目的研究模块。新的夏季REU项目将采用红外相机。通过荣誉论文计划，本科生将接触到激光诊断和红外热像仪。这些活动将激发在校学生和未来学生对工程学的兴趣，包括来自代表性不足群体的学生。

0853832KumarAn infrared thermography system will be procured that features a (3 to 5 micron) infrared camera, a 50 mm lens, thermographic calibration from -10 C to 350 C, and a 4x microscope kit, capable of imaging 50 to 100 micron objects. The equipment includes simultaneous analog and digital video and synchronization capabilities, and a temperature sensitivity and spot size of 0.02 C and 10 microns, respectively. The system will be used to investigate transport phenomena in (a) fuel cells, (b) biofuel droplet evaporation, and (c) flow boiling. Intellectual Merit: The thermography system will be employed to spatially and temporally resolve temperature distributions within microchannels and minichannels, and on microdroplets. The equipment will be used in conjunction with existing velocity measurement instrumentation (micro PIV) and species measurement instrumentation (tunable diode laser absorption spectroscopy and laser induced fluorescence). The resulting experimental data will serve to unravel the complicated physical mechanisms associated with these complex, two phase systems, and validate models that are being developed worldwide. Broader Impact: Courses, curriculum and workshops will be developed to educate students and professionals in the fields of IR thermography and laser diagnostics as applied to areas such as fuel cells, biofuels and cooling of electronic packages. Undergraduate students will be trained in the critical areas of experimental design and advanced measurement strategies, both in senior design projects and with research modules for an existing NSF REU program. New summer REU projects will incorporate the IR camera. Through the Honors Thesis program, undergraduate students will be exposed to laser diagnostics and IR thermography. These activities will pique interest in engineering among current and prospective students, including students from underrepresented groups.