Boiling heat transfer from an excavated fin

Journal Article · Sun Mar 01 04:00:00 EST 1992 · International Communications in Heat and Mass Transfer; (United States)

DOI:https://doi.org/10.1016/0735-1933(92)90033-E· OSTI ID:5571996

Liaw, S P; Yeh, R H ^[1]

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1. Dept. of Marine Engineering and Technology, National Taiwan Ocean Univ., Keelung (TW)

In this paper a single pin fin with excavation at base is proposed to enhance boiling heat transfer. The temperature distribution in the fin is obtained numerically by solving a two-dimensional heat conduction equation. A copper fin boiling in isopropyl alcohol is taken as an example. When the operating temperature exceeds a specific value, the heat duty decreases drastically, and the whole fin is governed by film boiling. This highest operating temperature limit (burnout) is raised by digging a hole at the fin base. Two distinct solutions are found by using different initial guesses into the code. This hysteresis effect becomes noticeable for a bigger hole. A model is also developed to predict the burnout temperatures.

• OSTI ID: 5571996
• Journal Information: International Communications in Heat and Mass Transfer; (United States), Journal Name: International Communications in Heat and Mass Transfer; (United States) Vol. 19:2; ISSN IHMTD; ISSN 0735-1933
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
661300 -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
BOILING
CALCULATION METHODS
COPPER
ELEMENTS
ENERGY TRANSFER
ETHERS
FINS
HEAT TRANSFER
HYSTERESIS
ISOPROPYL ETHER
METALS
NUMERICAL SOLUTION
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
TEMPERATURE DISTRIBUTION
THERMODYNAMICS
TRANSITION ELEMENTS
TWO-DIMENSIONAL CALCULATIONS