Optimum insulation-thickness for thermal and freezing protection

Y. F. Li, Wan Ki Chow

Research output: Journal article publicationJournal articleAcademic researchpeer-review

34 Citations (Scopus)


Methods for protecting water pipes, in cold regions against freezing, by thermal insulation material and heating cable will be analyzed. Reliability of keeping the tube's wall temperature of a piping system at minimum value will be analyzed. A thermoeconomic optimization analysis is applied with a simple algebraic formula derived for estimating the optimum insulation thickness for tubes of different sizes. The optimization is based on a life-cycle cost analysis. The effects of design parameters on the optimum thickness are investigated. Predicted results of this study would provide useful reference data when considering design, practical operation or maintenance.
Original languageEnglish
Pages (from-to)23-33
Number of pages11
JournalApplied Energy
Issue number1
Publication statusPublished - 1 Jan 2005


  • Freeze protection
  • Insulation thickness
  • Optimization
  • Tube

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Energy(all)


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