Loop heat pipe (LHP) is a highly efficient cooling device. It has gained great attention in the electronics cooling industry due to its superior heat transport capability — that is, its ability to carry heat over long distances. For this article, a miniature flat loop heat pipe (MFLHP) with rectangular-shaped evaporator was developed. The LHP’s evaporator was combined with the compensation chamber. MFLHPs with different diameters and lengths for the connecting pipeline were selected for a series of experimental studies on their heat transfer characteristics. In these experiments, pure water was used as the working fluid. The studies showed that the heat transport capability of a MFLHP with 4 mm diameter was better than that a MFLHP with 3 mm diameter. At a low thermal resistance of 0.04°C /W (at 200W), an optimal length for the connecting pipeline for a particular MFLHP with 4 mm diameter was identified. Finally, a heat sink attached to a MFLHP was developed for cooling a graphics processing unit (GPU), the thermal design power (TDP) of which was 200 W. The results showed the GPU heat sink with MFLHP had good performance and satisfied GPU cooling requirements. Compared to the conventional heat pipe solutions, only one MFLHP was able to cope with high power dissipation, offering the potential to make a lighter heat sink.
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ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems
July 6–8, 2011
Portland, Oregon, USA
Conference Sponsors:
- Electronic and Photonic Packaging Division
ISBN:
978-0-7918-4462-5
PROCEEDINGS PAPER
An Experimental Study of Heat Transfer Characteristics in Miniature Loop Heat Pipes With Rectangular Shaped Evaporator
Z. R. Lin,
Z. R. Lin
Novark Technology, Inc., Shenzhen, Guangdong, China
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Z. Y. Lee,
Z. Y. Lee
Novark Technology, Inc., Shenzhen, Guangdong, China
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L. W. Zhang,
L. W. Zhang
Novark Technology, Inc., Shenzhen, Guangdong, China
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S. F. Wang,
S. F. Wang
South China University of Technology, Guangzhou, Guangdong, China
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A. A. Merrikh,
A. A. Merrikh
Advanced Micro Devices, Inc., Austin, TX
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G. Refai-Ahmed
G. Refai-Ahmed
Advanced Micro Devices, Inc., Austin, TX
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Z. R. Lin
Novark Technology, Inc., Shenzhen, Guangdong, China
Z. Y. Lee
Novark Technology, Inc., Shenzhen, Guangdong, China
L. W. Zhang
Novark Technology, Inc., Shenzhen, Guangdong, China
S. F. Wang
South China University of Technology, Guangzhou, Guangdong, China
A. A. Merrikh
Advanced Micro Devices, Inc., Austin, TX
G. Refai-Ahmed
Advanced Micro Devices, Inc., Austin, TX
Paper No:
IPACK2011-52017, pp. 19-27; 9 pages
Published Online:
February 14, 2012
Citation
Lin, ZR, Lee, ZY, Zhang, LW, Wang, SF, Merrikh, AA, & Refai-Ahmed, G. "An Experimental Study of Heat Transfer Characteristics in Miniature Loop Heat Pipes With Rectangular Shaped Evaporator." Proceedings of the ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems. ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems, MEMS and NEMS: Volume 2. Portland, Oregon, USA. July 6–8, 2011. pp. 19-27. ASME. https://doi.org/10.1115/IPACK2011-52017
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