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Experimental research on heat transfer coefficients for cryogenic cross-counter-flow coiled finned-tube heat exchangers.

Author(s) : GUPTA P. K., KUSH P. K., TIWARI A.

Type of article: Article, IJR article

Summary

The aim of this experimental research is to find out the suitable correlations for designing the coiled finned-tube heat exchangers used in cryogenic applications. In order to conduct above experimental study, cross-counter-flow coiled finned-tube heat exchangers were developed in our lab and used in actual refrigeration cycle. The experiments were conducted in the range of effective Reynolds number 500-1900. The effect of diametrical clearance on the prediction of overall heat transfer coefficient is also investigated experimentally. The results from present study were compared in the form of overall heat transfer coefficient. Results of present experimental research indicate that different correlations selected in the study can be used with reasonable accuracy for designing the coiled finned-tube heat exchangers, if they are applied with suitable method of calculation of free-flow cross-sectional area. A more accurate new correlation has also been proposed that fitted experimental data within plus or minus 10% error band.

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Pages: 960-972

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Details

  • Original title: Experimental research on heat transfer coefficients for cryogenic cross-counter-flow coiled finned-tube heat exchangers.
  • Record ID : 2009-1420
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 5
  • Publication date: 2009/08

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