Critical heat flux (CHF) of water in circular stainless steel microchannels with inner diameters ranging from ∼127μm to ∼254 μm was investigated. Forty-five CHF data points were acquired over mass velocities ranging from 1,200 kg/m2s to 53,000 kg/m2s, heated lengths from 2 cm to 8 cm, and exit qualities from −0.2 to 0.15. Most of the exit qualities fell below 0.1. It was found that CHF conditions were more dependent on mass velocity and heated length than on exit thermal condition. The results were also compared to six CHF correlations, with a mean average error ranging from 22% to 261.8%. A new correlation was proposed to better predict the critical heat flux data under the thermal-hydraulic conditions studied in this investigation. In developing the correlation, 319 data points were added from two previous studies.
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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
Experimental Investigation of Critical Heat Flux in Microchannels for Flow-Field Probes Available to Purchase
Ali Kos¸ar,
Ali Kos¸ar
Sabancı University, Istanbul, Turkey
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Yoav Peles,
Yoav Peles
Rensselaer Polytechnic Institute, Troy, NY
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Arthur E. Bergles,
Arthur E. Bergles
Rensselaer Polytechnic Institute, Troy, NY
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Gregory S. Cole
Gregory S. Cole
Mainstream Engineering Corporation, Rockledge, FL
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Ali Kos¸ar
Sabancı University, Istanbul, Turkey
Yoav Peles
Rensselaer Polytechnic Institute, Troy, NY
Arthur E. Bergles
Rensselaer Polytechnic Institute, Troy, NY
Gregory S. Cole
Mainstream Engineering Corporation, Rockledge, FL
Paper No:
ICNMM2009-82214, pp. 81-90; 10 pages
Published Online:
September 21, 2010
Citation
Kos¸ar, A, Peles, Y, Bergles, AE, & Cole, GS. "Experimental Investigation of Critical Heat Flux in Microchannels for Flow-Field Probes." 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. 81-90. ASME. https://doi.org/10.1115/ICNMM2009-82214
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