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Shell-and-tube units even more compact with R134a.

[In German. / En allemand.]

Author(s) : KRIEGSMANN A.

Type of article: Article

Summary

A report on measurements done with R134a during condensation and evaporation. Performance was tested in individual and in complete bundles of standard and high-performance finned tubes. Comparisons were made with R22 and R12. Condensation performance was found to be considerably higher with R134a than with R22 and R12. High-performance finned tubes were about 40% more efficient than standard finned tubes. During evaporation, performance values of oil-free R134a were under those of R22, at the same evaporating temperature. The first part of the article deals more particularly with evaporation; the second, with condensation.

Details

  • Original title: [In German. / En allemand.]
  • Record ID : 1994-2868
  • Languages: German
  • Source: Kälte + Klimatechnik (Die) - vol. 46 - n. 9
  • Publication date: 1993/09
  • Document available for consultation in the library of the IIR headquarters only.

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