Post-dryout heat transfer to Freon in a vertical tube at high subcritical pressures

Nishikawa Kaneyasu; Yoshida Suguru; Mori Hideo; Takamatsu Hiroshi

doi:10.1016/0017-9310(86)90157-2

Post-dryout heat transfer to Freon in a vertical tube at high subcritical pressures

Nishikawa Kaneyasu, Yoshida Suguru, Mori Hideo, Takamatsu Hiroshi

Thermal Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Studies of the post-dryout heat transfer were made based on experimental data of the heat transfer to Freon 22 flowing upward in a vertical, round tube at nigh subcritical pressures (reduced pressures of 0.68-0.92). A conventional theoretical model failed in part to reproduce the measured wall temperature. A nondimensional parameter Kn was introduced to a model for the post-dryout regime to take account of the thermodynamic nonequilibrium between the vapor and the liquid droplets. A correlation of Kn was developed and a method using this correlation was successful in predicting the wall temperature.

Original language	English
Pages (from-to)	1245-1251
Number of pages	7
Journal	International Journal of Heat and Mass Transfer
Volume	29
Issue number	8
DOIs	https://doi.org/10.1016/0017-9310(86)90157-2
Publication status	Published - Aug 1986

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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abstract = "Studies of the post-dryout heat transfer were made based on experimental data of the heat transfer to Freon 22 flowing upward in a vertical, round tube at nigh subcritical pressures (reduced pressures of 0.68-0.92). A conventional theoretical model failed in part to reproduce the measured wall temperature. A nondimensional parameter Kn was introduced to a model for the post-dryout regime to take account of the thermodynamic nonequilibrium between the vapor and the liquid droplets. A correlation of Kn was developed and a method using this correlation was successful in predicting the wall temperature.",

author = "Nishikawa Kaneyasu and Yoshida Suguru and Mori Hideo and Takamatsu Hiroshi",

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AU - Kaneyasu, Nishikawa

AU - Suguru, Yoshida

AU - Hideo, Mori

AU - Hiroshi, Takamatsu

PY - 1986/8

Y1 - 1986/8

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AB - Studies of the post-dryout heat transfer were made based on experimental data of the heat transfer to Freon 22 flowing upward in a vertical, round tube at nigh subcritical pressures (reduced pressures of 0.68-0.92). A conventional theoretical model failed in part to reproduce the measured wall temperature. A nondimensional parameter Kn was introduced to a model for the post-dryout regime to take account of the thermodynamic nonequilibrium between the vapor and the liquid droplets. A correlation of Kn was developed and a method using this correlation was successful in predicting the wall temperature.

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