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Proceedings Papers

Formation Mechanism and Characteristics of Liquid Microlayer in Mini-Gap Boiling System

Yaohua Zhang, Yoshio Utaka
Proc. ASME. ICNMM2010, ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B, 109-114, August 1–5, 2010
Paper No: FEDSM-ICNMM2010-30281
DOI: https://doi.org/10.1115/FEDSM-ICNMM2010-30281
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Topics: Boiling, Bubbles, Ethanol, Fluids, Glass, Heating, Lasers, Liquid films, Plates (structures), Quartz
Proceedings Papers

Condensate Drop Movement on Heat Transfer Surface With Bulk Temperature Gradient in Marangoni Dropwise Condensation

Zhihao Chen, Yoshio Utaka
Proc. ASME. IHTC14, 2010 14th International Heat Transfer Conference, Volume 2, 61-69, August 8–13, 2010
Paper No: IHTC14-22196
DOI: https://doi.org/10.1115/IHTC14-22196
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Topics: Condensation, Condensed matter, Heat transfer, Temperature gradient, Surface tension, Ethanol, High temperature, Low temperature, Temperature, Vapors
Proceedings Papers

Microporous Layer Consisting of Alternating Porous Material With Different Wettability for Controlling Moisture in Gas Diffusion Layer of PEFC

Yoshio Utaka, Ikunori Hirose
Proc. ASME. IHTC14, 2010 14th International Heat Transfer Conference, Volume 5, 21-28, August 8–13, 2010
Paper No: IHTC14-22197
DOI: https://doi.org/10.1115/IHTC14-22197
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Topics: Gas diffusion layers, Porous materials, Oxygen, Diffusion (Physics), Water, Batteries, Electrolytes, Fuel cells, Polymers, Pressure
Proceedings Papers

Characteristics of Microlayer Thickness Formed During Boiling in Microgaps

Yaohua Zhang, Yoshio Utaka, Yuki Kashiwabara, Takumi Kamiaka
Proc. ASME. ICNMM2009, ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels, 99-104, June 22–24, 2009
Paper No: ICNMM2009-82244
DOI: https://doi.org/10.1115/ICNMM2009-82244
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Topics: Boiling, Bubbles, Diluents, Ethanol, Fluids, Kinematics, Lasers, Liquid films, Surface tension, Testing equipment
Journal Articles

Formation Mechanism and Characteristics of a Liquid Microlayer in Microchannel Boiling System

Yaohua Zhang, Yoshio Utaka, Yuki Kashiwabara
Journal: Journal of Heat Transfer
Article Type: Research Papers
J. Heat Transfer. December 2010, 132(12): 122403.
DOI: https://doi.org/10.1115/1.4002365
Published Online: September 20, 2010
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Topics: Boiling, Bubbles, Lasers, Microchannels, Viscosity, Water, Ethanol, Fluids, Liquid films, Heating
Proceedings Papers

Measurement of Oxygen Diffusion Characteristics of Porous Media Used for the Gas Diffusion Layer of Proton-Exchange Membrane Fuel Cells

Shixue Wang, Yoshio Utaka, Yutaka Tasaki
Proc. ASME. HT2007, ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 2, 49-53, July 8–12, 2007
Paper No: HT2007-32604
DOI: https://doi.org/10.1115/HT2007-32604
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Topics: Diffusion (Physics), Gas diffusion layers, Oxygen, Porous materials, Proton exchange membrane fuel cells, Batteries, Mass transfer, Porosity, Sensors, Temperature
Proceedings Papers

Oxygen Diffusion Characteristics of Gas Diffusion Layers With Moisture

Daigo Iwasaki, Yoshio Utaka, Yutaka Tasaki, Shixue Wang
Proc. ASME. ICNMM2008, ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels, 1279-1284, June 23–25, 2008
Paper No: ICNMM2008-62106
DOI: https://doi.org/10.1115/ICNMM2008-62106
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Topics: Diffusion (Physics), Gas diffusion layers, Oxygen, Water, Porous materials, Textiles, Condensation, Vacuum, Batteries, Electrolytes
Proceedings Papers

Characteristics of Micro-Liquid-Layer Behavior in a Mini-Channel Vaporizer for Water and Ethanol

Yoshio Utaka, Yutaka Tasaki, Kousuke Ichii
Proc. ASME. ICNMM2006, ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B, 89-95, June 19–21, 2006
Paper No: ICNMM2006-96128
DOI: https://doi.org/10.1115/ICNMM2006-96128
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Topics: Ethanol, Water, Bubbles, Heat transfer, Thin films, Fuel cell vehicles, Pool boiling, Emissions, Evaporation, Heat capacity