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TECHNICAL PAPERS: Boiling and Condensation

Nucleate Pool Boiling From Coated and Spirally Wrapped Tubes in Saturated R-134a and R-600a at Low and Moderate Heat Flux

[+] Author and Article Information
Shou-Shing Hsieh

Tsung-Ying Yang

Department of Mechanical Engineering, National Sun-Yat Sen University, Kaohsiung, Taiwan, Republic of China

J. Heat Transfer 123(2), 257-270 (Dec 04, 2000) (14 pages) doi:10.1115/1.1351818 History: Received August 03, 2000; Revised December 04, 2000
Copyright © 2001 by ASME
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References

Figures

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Pool boiling apparatus setup: (a) test section; (b) thermocouple positions and test specimen
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SEM photographs (×1000 and ×5000) of enhanced tube microstructure
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Boiling curves of enhanced tubes for R-600a and R-134a
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Heat transfer comparison for R-600a and R-134a
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The present correlation with experimental data
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The deviation with experimental data  
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Illustraiton of boiling visualizations
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Ratio of number of bubbles (N/N) and n in measurement area versus q
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Bubble departure diameter and frequency as function of heat flux
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fdb versus σg(ρ1−ρv)/ρ12
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Comparison of the model with the experimental data for R-600a
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Comparison of the model with the experimental data for R-134a  

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