Two-phase pressure drop is experimentally examined in a flow boiling condition in a tube of diameter 1.45 mm using water in ranges of pressure from 10 to 100 kPa, mass flux from 18 to 152 kg/m2s, heat flux from 13 to 646 kW/m2, and exit quality from 0.02 to 0.77. Also, pressure drop in an adiabatic air-water two-phase flow is measured at atmospheric pressure using the same test section and mass flux ranges of liquid and gas as those in the flow boiling. Decreasing system pressure the pressure drop significantly increases at a given mass flux. Influence of vapor phase on the pressure drop is found to be large both in the adiabatic and the diabatic conditions. The frictional pressure drop correlation for the adiabatic two-phase flow is developed and applied to predict pressure drop in the flow boiling. But it cannot give satisfactory predictions. The Chisholm correlation calculating a two-phase pressure drop multiplier is modified to account the influence of vapor phase in a capillary tube and the modified correlation can predict the pressure drop in the flow boiling within an error of 20%.
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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
Pressure Drop in a Capillary Tube in Boiling Two-Phase Flow
Fumito Kaminaga,
Fumito Kaminaga
Ibaraki University, Hitachi, Ibaraki, Japan
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Baduge Sumith,
Baduge Sumith
Ibaraki University, Hitachi, Ibaraki, Japan
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Kunihito Matsumura
Kunihito Matsumura
Ibaraki University, Hitachi, Ibaraki, Japan
Search for other works by this author on:
Fumito Kaminaga
Ibaraki University, Hitachi, Ibaraki, Japan
Baduge Sumith
Ibaraki University, Hitachi, Ibaraki, Japan
Kunihito Matsumura
Ibaraki University, Hitachi, Ibaraki, Japan
Paper No:
ICMM2003-1080, pp. 635-642; 8 pages
Published Online:
February 24, 2009
Citation
Kaminaga, F, Sumith, B, & Matsumura, K. "Pressure Drop in a Capillary Tube in Boiling Two-Phase Flow." 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. 635-642. ASME. https://doi.org/10.1115/ICMM2003-1080
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