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Local heat transfer coefficient of steam condensation with high fractional noncondensable gas in the dewvaporation desalination process

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Local heat transfer coefficient of steam condensation with high fractional noncondensable gas in the dewvaporation desalination process.htm (394bytes)
Date
2007-11
Author
Zhu, Ai Mei
朱爱梅
Wang, Shi Chang
Liu, Qing Lin
刘庆林
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  • 化学化工-已发表论文 [14469]
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Abstract
A tubular condenser column was designed and constructed to evaluate the performances of the condensation process with a high fractional noncondensable gas in the dewvaporation desalination process. An experimental investigation has been conducted to determine the local condensation heat transfer coefficient, which is related to steam-air mixed gas condensation in an annulus around a vertical copper tube. The results show that the local heat transfer coefficient decreases with increase of the distance from the mixed gas inlet, and varies from 200 to 1900 W/m(2).degrees C, which is high enough for steam condensation in the presence of a high fractional noncondensable gas. The correlation of steam condensing local heat transfer coefficient in the presence of a high fractional noncondensable gas was developed in terms of the local mixture Reynolds number, Jakob number, and ratio of noncondensable gas mass fraction. It is found that the correlation has a good agreement with the experimental data.
Citation
Ind. Eng. Chem. Res., 2007, 46 (26):9190–9195
URI
http://dx.doi.org/doi:10.1021/ie070569
https://dspace.xmu.edu.cn/handle/2288/9217

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