Share

IIR document

Reliable one-dimensional CPWTR models for two-dimensional insulated polygonal ducts.

Author(s) : WONG K. L., JUMAILY A. al-, CHEN W. L., et al.

Type of article: Article, IJR article

Summary

The heat transfer characteristics of various insulated long polygonal ducts are analyzed using one-dimensional plane wedge thermal resistance (PWTR) and plate thermal resistance (PTR) models. It is found that errors generated by the PWTR model are all positive and those generated by the PTR model are all negative. Thus, the combined plate wedge thermal resistance (CPWTR) model generated by implementing PWTR and PTR models and equating the proportion factors can neutralize the positive and negative errors and generate reasonably accurate results when compared with the two-dimensional numerical analysis. Most errors generated by the one-dimensional CPWTR model are within plus or minus 1% for practical sizes and insulated thickness for air-conditioning and refrigeration applications. Meanwhile, the PTR model can be used to estimate accurately the maximum or minimum surface temperatures, respectively, with hot or cold fluids inside an insulated triangular, rectangular or pentagonal duct.

Available documents

Format PDF

Pages: 254-266

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Reliable one-dimensional CPWTR models for two-dimensional insulated polygonal ducts.
  • Record ID : 2007-0106
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 2
  • Publication date: 2007/03

Links


See other articles in this issue (17)
See the source

Indexing