The design, fabrication, and evaluation of forced convection boiling two-phase flow, micro scale heat exchanger are described. The micro heat exchanger consist of a heater, and 16 mm long multiple parallel triangular micro channels, with hydraulic diameter ranging from 50 μm to 200 μm. The system allowed simultaneously visualizing the flow regime, to measure the resistor temperature distribution, the pressure drop, and input power levels. Experiments were conducted using water with mass flow rate of 1–10 g/min and heat fluxes ranging from 10–60 W/cm2 in order to better understand the flow mechanism associated with micro scale forced convection boiling two-phase flow. The pressure drop, temperature, fluctuation and flow regimes map were obtained. The results are consistent with newly reported studies and show that flow fluctuation at that scale is exaggerated with respect to conventional size channels. A unique flow regime was observed and was named “rapid bubble growth”.
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ASME 2003 1st International Conference on Microchannels and Minichannels
April 24–25, 2003
Rochester, New York, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-3667-3
PROCEEDINGS PAPER
Two-Phase Boiling Flow in Microchannels: Instabilities Issues and Flow Regime Mapping
Y. Peles
Y. Peles
Rensselaer Polytechnic Institute, Troy, NY
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Y. Peles
Rensselaer Polytechnic Institute, Troy, NY
Paper No:
ICMM2003-1069, pp. 559-566; 8 pages
Published Online:
February 24, 2009
Citation
Peles, Y. "Two-Phase Boiling Flow in Microchannels: Instabilities Issues and Flow Regime Mapping." Proceedings of the ASME 2003 1st International Conference on Microchannels and Minichannels. 1st International Conference on Microchannels and Minichannels. Rochester, New York, USA. April 24–25, 2003. pp. 559-566. ASME. https://doi.org/10.1115/ICMM2003-1069
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