Journal of Enhanced Heat Transfer Theory and Application in High Performance Heat and Mass Transfer

ISSN for PRINT: 1065-5131

For Online Access

Best Paper Award Selection - Editorial Board Site

2003, Volume10

Issue 4

116 pages

DOI: 10.1615/JEnhHeatTransf.v10.i4

Issue price - $138.00

Jin-Kyeong Kim
School of Mechanical and Industrial System Engineering, Kyung Hee University, Yong In, Kyung Gi 449-701, Korea

Chan Woo Park
Machinery Research Lab., LG Cable Ltd., Anyang, Kyung Gi 431-080, Korea

Yong Tae Kang
School of Mechanical and Industrial System Engineering, Kyung Hee University, Yong In, Kyung Gi 449-701, Korea

The objectives of this article are to develop a new method of wettability measurement and to study the effect of microscale surface treatment on the wettability across horizontal tubes in a H₂O/LiBr falling film absorber. Three types of microscale hatched tubes with various degrees of roughness are tested in a test rig. Inlet solution temperature (30.50 °C), concentration (55.62 wt% of LiBr), and mass flow rate (0.74.2.71 kg/min) are considered as key parameters. Reynolds number ranged from 30 to 120 by controlling the inlet mass flow rate. The wettability on the microscale hatched tubes was higher than that for the smooth tubes. The wettability decreased linearly along the vertical location, but was proportional to the solution temperature and mass flow rate. The experimental correlations of the wettability for the smooth and the microscale hatched tubes were developed with error bands of ±20% and ±10%, respectively.

DOI: 10.1615/JEnhHeatTransf.v10.i4.60 Download article, 421-430 pages

Article price - $35.00

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