Computation of boiling water on circular finned tubes

Journal Article · Thu Apr 01 04:00:00 EST 1999 · International Communications in Heat and Mass Transfer

DOI:https://doi.org/10.1016/S0735-1933(99)00024-X· OSTI ID:343667

Fan, C C; Liaw, S P ^[1]

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1. National Taiwan Ocean Univ., Keelung (Taiwan, Province of China). Dept. of Mechanical and Marine Engineering

This study investigates the maximum heat transfer rate and the critical temperature of circular finned tubes in a boiling liquid. The analysis is conducted numerically by solving a two-dimensional heat conduction equation in a steady state. The dependence between heat flux and the temperature at the inner wall of the tube is quantified. Varying the width, height, and pitch of fins, an optimal finned tube with efficient heat transfer rate can be obtained. In the theoretical approach the successive over relaxation (S.O.R.) accompanied with Multi-grid scheme is used. The local heat transfer rates are assumed to follow power-law-type temperature dependence. The initial guess at very high temperatures or so-called a cooling process is also executed in a same way. The results reveal that increasing either the width or the height of a fin increases the total heat transfer rate.

• OSTI ID: 343667
• Journal Information: International Communications in Heat and Mass Transfer, Journal Name: International Communications in Heat and Mass Transfer Journal Issue: 3 Vol. 26; ISSN 0735-1933; ISSN IHMTDL
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AUGMENTATION
BOILING
FINS
HEAT EXCHANGERS
HEAT FLUX
HEAT TRANSFER
NUMERICAL ANALYSIS
TEMPERATURE DEPENDENCE