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TECHNICAL PAPERS: Evaporative Boiling and Condensation

Critical Heat Fluxes of Subcooled Water Flow Boiling Against Outlet Subcooling in Short Vertical Tube

[+] Author and Article Information
Koichi Hata

Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan

Masahiro Shiotsu

Dept. of Energy Science and Technology, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan

Nobuaki Noda

National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu 509-5292, Japan

J. Heat Transfer 126(3), 312-320 (Jun 16, 2004) (9 pages) doi:10.1115/1.1725101 History: Received July 22, 2003; Revised January 21, 2004; Online June 16, 2004
Copyright © 2004 by ASME
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References

Figures

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Ratio of CHF data for the inner diameter of 3, 6, 9, and 12 mm to the values derived from the CHF correlation versus (ΔTsub,out)cal at outlet pressures of 159 kPa–1 MPa
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Comparison of CHF data for the inner diameter of 3 mm with Eq. (7) and Solutions of Celata et al. model
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Comparison of CHF data for the inner diameter of 6 mm with Eq. (7) and Solutions of Celata et al. model
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Comparison of CHF data for the inner diameter of 9 mm with Eq. (7) and Solutions of Celata et al. model
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Comparison of CHF data for the inner diameter of 12 mm with Eq. (7) and Solutions of Celata et al. model
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Comparison of Celata et al. data and our data with the values derived from the CHF correlation
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Comparison of Mudawar and Bowers data and our data with the values derived from the CHF correlation
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Comparison of Vandervort et al. data and our data with the values derived from the CHF correlation
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Time variations in Pipt,Popt,Pin,Pout,q and Ts for Pout=735 kPa,(ΔTsub,out)cal=91.49 K and u=13.3 m/s
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Time variations in ΔTsub,in,ΔTsub,out,(ΔTsub,out)cal,q and Ts for Pout=735 kPa,(ΔTsub,out)cal=91.49 K and u=13.3 m/s
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Relationship between measured outlet subcooling and calculated outlet subcooling for the inner diameter of 3, 6, 9, and 12 mm with L/d=11
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log(qcr,sub) versus log{(ΔTsub,out)cal} for an inner diameter of 9 mm with a heated length of 99 mm at Pout of 800 kPa
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qcr,sub versus L/d for an inner diameter of 9 mm at ΔTsub,out of 90 K with the flow velocity of 4.0, 6.9, 9.9, and 13.3 m/s
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qcr,sub versus L/d for an inner diameter of 12 mm at ΔTsub,out of 90 K with the flow velocity of 4.0, 6.9, 9.9, and 13.3 m/s
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Schematic diagram of experimental apparatus
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Vertical cross-sectional view of the test section
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Measurement and data processing system
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Relationship between q and Ts−TL
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Typical photograph of the test tube burned out
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qcr,sub versus (ΔTsub,out)cal for an inner diameter of 3 mm with a heated length of 33 mm at an outlet pressure of 800 kPa
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qcr,sub versus (ΔTsub,out)cal for an inner diameter of 6 mm with a heated length of 66 mm at an outlet pressure of 800 kPa
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qcr,sub versus (ΔTsub,out)cal for an inner diameter of 9 mm with a heated length of 99 mm at an outlet pressure of 800 kPa
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qcr,sub versus (ΔTsub,out)cal for an inner diameter of 12 mm with a heated length of 133 mm at an outlet pressure of 800 kPa
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qcr,sub versus d at (ΔTsub,out)cal of 50 K with the flow velocity of 4.0, 6.9, 9.9 and 13.3 m/s at Pout of 800 kPa
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qcr,sub versus d at (ΔTsub,out)cal of 90 K with the flow velocity of 4.0, 6.9, 9.9, and 13.3 m/s at Pout of 800 kPa
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qcr,sub versus u at (ΔTsub,out)cal of 50 K with the inner diameter of 3, 6, 9, and 12 mm at Pout of 800 kPa
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qcr,sub versus u at (ΔTsub,out)cal of 90 K with the inner diameter of 3, 6, 9, and 12 mm at Pout of 800 kPa

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