Thawing and refreezing around a buried pipe

Leonid Bronfenbrener, Eli Korin

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

An approximate two-dimensional theoretical model based on a quasi-steady approach is presented for thermal analysis of phase-change processes around an insulated pipeline buried horizontally in semi-infinite frozen soil. The model is verified by comparison with numerical and other approximate solutions from the literature. The theoretical results of this study show that, under constant boundary conditions, the propagation of the thawing/freezing interface is limited. The reverse process occurring as a result of interruption of the fluid flow is also examined. Based on the solution for prediction of the boundary location of the thawing region, an analytical equation for determination of the fluid temperature as a function of time is developed.

Original languageEnglish
Pages (from-to)239-247
Number of pages9
JournalChemical Engineering and Processing: Process Intensification
Volume38
Issue number3
DOIs
StatePublished - 1 May 1999

Keywords

  • Buried pipe
  • Frozen soil
  • Phase change
  • Thawing/freezing interface

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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