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首页> 美国政府科技报告 >Investigation of Critical Heat Fluxes in Vertical Tubes Internally Cooled by Freon-12. Part II - The Development of a Critical Heat Flux Correlation for Uniformly Heated Tubes
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Investigation of Critical Heat Fluxes in Vertical Tubes Internally Cooled by Freon-12. Part II - The Development of a Critical Heat Flux Correlation for Uniformly Heated Tubes

机译：氟里昂-12冷却内管垂直管内临界热流密度的研究。第二部分 - 均匀加热管的临界热流密度的发展

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Based on the parameter groups derived from a dimensional analysis, a correlation for predicting critical heat fluxes (CHF) in a uniformly heated tube, cooled internally by Freon-12, has been developed by systematically examining experimental data to establish the interrelationship of these dimensionless groups. Although the basic correlation agrees with much experimental data, it is inaccurate for short tubes or low mass fluxes. To compensate for these effects, corrective terms were introduced to provide a more generalised form. The correlation has been tested against approximately 2000 experimental data. It was found that, apart from data at low exit qualities (less than 0.1) or short boiling lengths less than approximately 50, the correlation agrees with the data to within +- 10 per cent for boiling length ratios less than approximately 150; for values greater than 150, more than 90 per cent of points agree with the correlation to within +- 5 per cent. (Atomindex citation 13:711169)

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