Condensing Heat Transfer of Refrigerant-113 in Vertical Tubes : Part 2-Heat Transfer Coefficient

OH Hoo-Kyu

doi:10.18948/shase.8.22_13

Bibliographic Information

Other Title

R113の垂直管内凝縮熱伝達 : 第2報-熱伝達率
R113の垂直管内凝縮熱伝達-2-熱伝達率〔英文〕
R113 ノスイチョクカンナイギョウシュクネツデンタツ 2 ネツデン

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Description

Measurements of heat transfer coefficients during condensation of Refrigerant-113 pure vapor in a 12.7mm I. D. vertical copper tube are presented for a total mass velocity from 153 to 194kg/(m^2・s), quality from 1 to 0.2, and film Reynolds number from 400 to 3000. The results are compared with previous prediction methods for turbulent/turbulent film condensation. Furthermore, a dimensionless equation and nomographic method for prediction of the heat transfer coefficient and frictional pressure drop during condensation inside vertical tubes, based on a hydrodynamic model of the annular flow pattern and turbulent analogy, are proposed.

Journal

Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan

Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan 8 (22), 13-23, 1983

The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan