Integral solutions for ice formation and melting outward of the external wall of a pipe with internal and external convection

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:163284

Neto, J H.M.; Krarti, M ^[1]

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1. Univ. of Colorado, Boulder, CO (United States). Dept. of Civil Engineering

Outward formation and melting of ice around the external wall of a coil-tubing is common in ice-storage tanks which use indirect brine solution (e.g. ethylene or propylene glycol water mixtures) to freeze the water and melt the ice around a build-in spiral coil-tubing heat-exchanger. In this paper, Integral Solutions are derived and analytically solved for ice formation and melting outward a pipe wall, with internal and external convection. Parametric analysis show the effect of the pipe radius, the Stefan number, and the convection heat transfer coefficients, on the ice formation and melting thickness layer. It was found that the ice or water layer thickness increases with the pipe radius but decreases with the convection heat transfer coefficients. The Stefan number has no significant effect. This model can be useful as a limiting case to validate freezing-melting problems outward tubing.

• OSTI ID: 163284
• Report Number(s): CONF-950729--
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
BRINES
CALCULATION METHODS
COLD STORAGE
DIMENSIONS
HEAT TRANSFER
ICE
MATHEMATICAL MODELS
MELTING
PARAMETRIC ANALYSIS
PHASE TRANSFORMATIONS
PIPES
SYNTHESIS
THERMAL ENERGY STORAGE EQUIPMENT