IIR document

Polybranched regenerative generator-absorber heat exchange (GAX) cooling cycles.

Author(s) : STAICOVICI M. D.

Type of article: Article, IJR article


After a short characterization of today's advanced absorption cooling systems, of multi-effect and GAX-type, the paper introduces polybranched regenerative GAX cycles. A model is proposed and applied to cycles with one to three stages working with the ammonia/water-lithium bromide combination. Compared with those with vapour exchange, operated with water-ammonia, one of the best GAX cycles till now, a three-stage polybranched regenerative cycle has 1.25-1.9 times higher COP values and represents 71-82% of the Carnot cooling efficiency for lifts varying between 68 and 47 deg C. The polybranched regenerative cycle double-effect cycle, provided with rectification heat recovery, a two-stage polybranched regenerative cycle is constructively simpler and thermally with about 40% more performance.

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Pages: 318-329


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  • Original title: Polybranched regenerative generator-absorber heat exchange (GAX) cooling cycles.
  • Record ID : 1996-1156
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 18 - n. 5
  • Publication date: 1995/06


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