Experimental study of saturated flow boiling heat transfer in an array of staggered micro-pin-fins |
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| Authors: | Weilin Qu Abel Siu-Ho |
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| Affiliation: | 1. Microsystems Engineering, Rochester Institute of Technology, 168 Lomb Memorial Dr., Rochester, NY 14623, USA;2. Mechanical Engineering, Rochester Institute of Technology, 76 Lomb Memorial Dr., Rochester, NY 14623, USA;1. Mechanical, Aeronautical, and Nuclear Engineering Department, Rensselaer Polytechnic Institute, 110 8th St., Troy, NY, USA;2. Department of Mechanical and Aerospace Engineering, University of Central Florida, 12760 Pegasus Blvd, Orlando, FL, USA;1. Department of Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China;2. ShenZhen Research Institute of Xiamen University, ShenZhen 518057, China;3. ABB Xiamen Low Voltage Equipment Company, 12-20 Chuangxin 3rd Road, Xiamen 361006, China;4. Key Laboratory of Surface Functional Structure Manufacturing of Guangdong High Education Institutes, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;1. Key Laboratory of Surface Functional Structure Manufacturing of Guangdong High Education Institutes, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;2. Department of Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China;1. Department of Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China;2. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China;3. Department of Aeronautics, Xiamen University, Xiamen 361005, China |
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| Abstract: | This study concerns water saturated flow boiling heat transfer in an array of staggered square micro-pin-fins having a 200 × 200 μm2 cross-section by a 670 μm height. Three inlet temperatures of 90, 60, and 30 °C, six mass velocities for each inlet temperature, ranging from 183 to 420 kg/m2 s, and outlet pressures between 1.03 and 1.08 bar were tested. Heat fluxes ranged from 23.7 to 248.5 W/cm2. Heat transfer coefficient was fairly constant at high quality, insensitive to both quality and mass velocity. Heat transfer was enhanced by inlet subcooling at low quality. Possible heat transfer mechanism was discussed. |
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