Continuous increase in the integration density of microelectronic units necessitates the use of MHPs with enhanced thermal performance. Recently, the use of wettability gradients have been shown to enhance the heat transfer capacity of MHPs. In this paper, we present an optimization of axial wettability gradient to maximize the heat transfer capacity of the MHP. We use an experimentally validated mathematical model and interior point method to optimize the wettability gradient. For our analysis, we consider two cases wherein (i) the mass of working fluid is constrained, (ii) mass of working fluid is a design variable. Compared to MHP with uniform high wettability and filled with a fixed mass of working fluid, optimization of the wettability gradient leads to 65% enhancement in heat transfer capacity. Similar comparisons for MHP filled with variable mass of working fluid shows more than 90% increase in the maximum heat transfer capacity due to optimization of wettability gradient.
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ASME 2018 16th International Conference on Nanochannels, Microchannels, and Minichannels
June 10–13, 2018
Dubrovnik, Croatia
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5119-7
PROCEEDINGS PAPER
Optimization of Wettability Gradient for Enhancement of Thermal Performance of Micro Heat Pipes
Manjinder Singh,
Manjinder Singh
Indian Institute of Technology Delhi, Delhi, India
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Naresh Varma Datla,
Naresh Varma Datla
Indian Institute of Technology Delhi, Delhi, India
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Supreet Singh Bahga,
Supreet Singh Bahga
Indian Institute of Technology Delhi, Delhi, India
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Sasidhar Kondaraju
Sasidhar Kondaraju
Indian Institute of Technology Bhubaneswar, Bhubaneswar, India
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Manjinder Singh
Indian Institute of Technology Delhi, Delhi, India
Naresh Varma Datla
Indian Institute of Technology Delhi, Delhi, India
Supreet Singh Bahga
Indian Institute of Technology Delhi, Delhi, India
Sasidhar Kondaraju
Indian Institute of Technology Bhubaneswar, Bhubaneswar, India
Paper No:
ICNMM2018-7666, V001T02A007; 9 pages
Published Online:
August 23, 2018
Citation
Singh, M, Datla, NV, Bahga, SS, & Kondaraju, S. "Optimization of Wettability Gradient for Enhancement of Thermal Performance of Micro Heat Pipes." Proceedings of the ASME 2018 16th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2018 16th International Conference on Nanochannels, Microchannels, and Minichannels. Dubrovnik, Croatia. June 10–13, 2018. V001T02A007. ASME. https://doi.org/10.1115/ICNMM2018-7666
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