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Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019)

ISSN: 2688-7231 (Online)

Experimental Comparison of Thermal Resistance for Micro pin fin heat sinks with different shapes and arrangement

Gagan V. Kewalramani
Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India

Gaurav Hedau
Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India

Sandip Kumar Saha
Department of Mechanical Engineering, Indian Institute of Technology, Bombay, Powai, Mumbai – 400076. Maharashtra, India

Amit Agrawal
Department of Mechanical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 4000076, India

DOI: 10.1615/IHMTC-2019.710
pages 419-424

要約

In the present study, a comparative study of thermal resistance of the micro pin fin heat sinks with different shapes (square and elliptical), and arrangements (interrupted and staggered) is presented. Experiments are performed on micro pin fin heat sink using deionized (DI) water as the coolant. A numerical model with suitable boundary conditions is developed and validated with the experimental results by comparing pressure drop and temperature at different locations of micro pin fin heat sink. The conjugate heat transfer effect (in numerical and experimental results) shows considerable temperature variations in the inlet and outlet collectors of the micro pin fin heat sink. It is found that the shape of micro pin fin heat sink has considerable effect on the thermal resistance as compared to arrangement.

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