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International Journal of Fluid Mechanics Research
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ISSN Print: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i4-6.150
pages 614-621

Boiling Characteristics of Subcooled Liquid Flowing through Microchannels

Bu-Xuan Wang
Laboratory of Phase Change and Interfacial Transport Phenomena, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
Professor Wang has been an influential educator of thermal engineering in China. He established firstly a new speciality â Engineering Thermophysics in Tsinghua University in 1957. Professor Wang was a founding member of the Chinese Society of Engineering Thermophysics. He was appointed by the State Education Commission as Chairman of the Committee for Basic Engineering Teaching on Thermodynamics & Heat Transfer in Colleges and Universities during 1979-1995, and as a leading member of the evolving section Power Engineering & Engineering Thermophysics of National Degree Committee from 1981-1997. Professor Wang's research, a number of projects he undertook were prompted by national needs. For example, from 1963 to 1966, he led a research team seeking to accelerate the synthesis of ammonia in a large Sichuan chemical plant by enhancing heat transfer through a resign of compact heat exchanger within a tower so as to provide more effective catalystic volume and to obtain a more favorable temperature distribution in the piled catalyst. The efforts resulted in a doubling of the daily production, which is listed in the State Conncil's Government Bulletin of 1966 as one of the hundred important achievements.
Xiao-Feng Peng
Laboratory of Phase Change and Interfacial Transport Phenomena, Department of Thermal Engineering, Tsinghua University, Beijing 100084


Experiments were conducted to investigate the forced-flow boiling characteristics of subcooled liquid flowing through microchannels with cross-section of 0.6×0.7 mm, machined on the stainless steel plate 2 mm thick. The influences of liquid velocity and subcooling on the boiling curve were experimentally inspected. The experiments indicated that the flow boiling characteristics are quite different from that in normally sized tubes. The flow boiling heat transfer was intensified greatly, and there did not exist the apparent partial nucleate boiling for subcooled flow boiling, i.e., boiling was induced much earlier in micro-channels.

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