Advance of an electronic technology has caused the increase of heat generation density for semiconductors densely integrated. Thermal management becomes more important, and a cooling system for high heat flux is required. It is extremely effective to such a demand using flow boiling heat transfer because of its high heat removal ability. To develop the cooling system for a large area at high heat flux, the cold plate structure of narrow channels with auxiliary unheated channel for additional liquid supply was devised and confirmed its validity by experiments. A large surface of 150mm in heated length and 30mm in width with grooves of an apex angle of 90 deg, 0.5mm depth and 1mm in pitch was employed. A structure of narrow rectangular heated channel between parallel plates with an unheated auxiliary channel was employed and the heat transfer characteristics were examined by using water for different combinations of gap sizes and volumetric flow rates. Five different liquid distribution modes were tested and their data were compared. The values of CHF larger than 1.9×106W/m2 for gap size of 2mm under mass velocity based on total volumetric flow rate and on the cross section area of main heated channel 720kg/m2s or 1.7×106W/m2 for gap size of 5mm under 290kg/m2s were obtained under total volumetric flow rate 4.5×10−5m3/s regardless of the liquid distribution modes. Under several conditions, the extensions of dry-patches were observed at the upstream location of the main heated channel resulting burnout not at the downstream but at the upstream. High values of CHF larger than 2×106W/m2 were obtained only for gap size of 2mm. The result indicates that higher mass velocity in the main heated channel is more effective for the increase in CHF. It was clarified that there is optimum flow rate distribution to obtain the highest values of CHF. For gap size of 2mm, high heat transfer coefficient as much as 7.4×104W/m2K were obtained at heat flux 1.5×106W/m2 under mass velocity 720kg/m2s based on total volumetric flow rate and on the cross section area of main heated channel. Also to obtain high heat transfer coefficient, it is more useful to supply the cooling liquid from the auxiliary unheated channel for additional liquid supply in the transverse direction perpendicular to the flow in the main heated channel.
Skip Nav Destination
ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels
June 22–24, 2009
Pohang, South Korea
Conference Sponsors:
- Nanotechnology Institute
ISBN:
978-0-7918-4349-9
PROCEEDINGS PAPER
Development of Cooling System for a Large Area at High Heat Flux by Using Flow Boiling in Narrow Channels
Shinichi Miura,
Shinichi Miura
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Yukihiro Inada,
Yukihiro Inada
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Yasuhisa Shinmoto,
Yasuhisa Shinmoto
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Haruhiko Ohta
Haruhiko Ohta
Kyushu University, Fukuoka, Japan
Search for other works by this author on:
Shinichi Miura
Kyushu University, Fukuoka, Japan
Yukihiro Inada
Kyushu University, Fukuoka, Japan
Yasuhisa Shinmoto
Kyushu University, Fukuoka, Japan
Haruhiko Ohta
Kyushu University, Fukuoka, Japan
Paper No:
ICNMM2009-82279, pp. 287-294; 8 pages
Published Online:
September 21, 2010
Citation
Miura, S, Inada, Y, Shinmoto, Y, & Ohta, H. "Development of Cooling System for a Large Area at High Heat Flux by Using Flow Boiling in Narrow Channels." Proceedings of the ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels. Pohang, South Korea. June 22–24, 2009. pp. 287-294. ASME. https://doi.org/10.1115/ICNMM2009-82279
Download citation file:
4
Views
0
Citations
Related Proceedings Papers
Related Articles
High-Flux Thermal Management With Supercritical Fluids
J. Heat Transfer (December,2016)
Subcooled Boiling Heat Transfer for Turbulent Flow of Water in a Short Vertical Tube
J. Heat Transfer (January,2010)
Ultra-Compact Microscale Heat Exchanger for Advanced Thermal Management in Data Centers
J. Electron. Packag (June,2022)
Related Chapters
Post-CHF Heat Transfer in Flow Boiling
Two-Phase Heat Transfer
Thermoelectric Coolers
Thermal Management of Microelectronic Equipment
Critical Heat Flux in Flow Boiling
Two-Phase Heat Transfer