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Energy assessment of HFC-blends as R22 alternatives.

[In German. / En allemand.]

Author(s) : AHNEFELD G., VOLLMER D., WOBST E.

Type of article: Article

Summary

As compared with R22, performance measurements of plants operated with the HFC-blends R407, R407A, R407B, R404A and R507 under constant external conditions showed losses of up to 20% for the coefficient of performance. The highest deviations between theoretical cycle calculations and experimental results were obtained on R407C and R407A. One reason is an increased temperature glide of the condensing refrigerant caused by pressure drop and subcooling. Energy benefits can be achieved through installation of an internal heat exchanger at blends with a higher R125 content (R407B, R404A, R507).

Details

  • Original title: [In German. / En allemand.]
  • Record ID : 1997-1348
  • Languages: German
  • Source: KI Luft Kältetech. - vol. 32 - n. 5
  • Publication date: 1996/05
  • Document available for consultation in the library of the IIR headquarters only.

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