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Reasons for drop in shell-and-tube condenser performance when replacing R22 with zeotropic mixtures. 1. Analysis of experimental findings.

Author(s) : SAJJAN D., KARLSSON T., VAMLING L.

Type of article: Article, IJR article

Summary

An experimental and theoretical investigation was made to find out the reasons for the drop in shell-and-tube condenser performance when replacing R22 with a zeotropic mixture R407C. Measurements show that at lower condenser loads the reduction in performance can be as large as 70% compared to the full condenser load. Calculation results are compared with experimental results for two different condensers, one with micro-finned tubes and one with 3-D finned tubes. Calculations show that the degree of mixing of the newly formed condensate on a tube and the drained condensate is a factor influential enough to explain the performance drop. 3-D finned tubes seem to have better mixing in the condensate than integral finned tubes.

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Pages: 552-560

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Details

  • Original title: Reasons for drop in shell-and-tube condenser performance when replacing R22 with zeotropic mixtures. 1. Analysis of experimental findings.
  • Record ID : 2004-2791
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 27 - n. 5
  • Publication date: 2004/08

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