Second law analysis on fractal-like fin under crossflow

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · AIChE Journal

DOI:https://doi.org/10.1002/aic.690411015· OSTI ID:131884

Lee, D J; Lin, W W ^[1]

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1. National Taiwan Univ., Taipei (Taiwan, Province of China). Dept. of Chemical Engineering

A fin is used for enhancing heat-transfer rate from an object to the surrounding fluid with poor heat-transfer coefficients. Recently, the second law analysis has influenced the design methodology of various heat- and mass-transfer systems. The major concern for the second law analysis is the entropy generation rate (or system irreversibility). It has been proposed that a minimization of total process entropy generation rate is equivalent to maximize the system effectiveness. Therefore, besides the conventional process design considerations, an optimal process design should also generate entropy at a minimum rate. When compared with the natural convection condition, the application of an external flow field can usually largely enhance the heat-transfer rate from an object. This article examines the performance and the entropy generation rate of a fractal-like fin under a crossflow.

• OSTI ID: 131884
• Journal Information: AIChE Journal, Journal Name: AIChE Journal Journal Issue: 10 Vol. 41; ISSN 0001-1541; ISSN AICEAC
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CROSSFLOW SYSTEMS
DESIGN
EQUATIONS
FINS
HEAT TRANSFER
THERMAL ANALYSIS