NDLI: Pressure Drop in a Capillary Tube in Boiling Two-Phase Flow

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Kaminaga, Fumito Sumith, Baduge Matsumura, Kunihito
Copyright Year	2003
Abstract	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%.
Sponsorship	Nanotechnology Institute
Starting Page	635
Ending Page	642
Page Count	8
File Format	PDF
ISBN	0791836673
DOI	10.1115/ICMM2003-1080
Volume Number	1st International Conference on Microchannels and Minichannels
Conference Proceedings	ASME 2003 1st International Conference on Microchannels and Minichannels
Language	English
Publisher Date	2003-04-24
Publisher Place	Rochester, New York, USA
Access Restriction	Subscribed
Subject Keyword	Water Errors Atmospheric pressure Pressure drop Two-phase flow Vapors Boiling Flow (dynamics) Pressure Heat flux
Content Type	Text
Resource Type	Article

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