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Comparative simulation and investigation of ammonia-water: absorption cycles for heat pump applications.

Author(s) : ENGLER M., GROSSMAN G., HELLMANN H. M.

Type of article: Article, IJR article

Summary

The objective of the present study has been a comprehensive investigation of various ammonia-water cycles, with operating conditions and different design parameters varied over a wide range to compare their performance. A modular simulation program was employed, which makes it possible to simulate absorption cycles in varying configurations. The cycles investigated increase in complexity from the basic single-effect cycle, through the same cycle with an added precooler, through an added solution-cooled absorber and solution-heated generator, to the GAX and branched GAX cycles with different types of branching. Each cycle was formed on the basis of the previous one by adding one or two components at each stage, resulting in increasing complexity rewarded by improved performance. This kind of investigation enabled determination at each stage of the influence of the added components on the cycle. The results of the investigation show cooling COPs ranging from about 0.5 for the simplest single-effect cycle to about 1 for the GAX cycle.

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Pages: 504-516

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Details

  • Original title: Comparative simulation and investigation of ammonia-water: absorption cycles for heat pump applications.
  • Record ID : 1998-1638
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 20 - n. 7
  • Publication date: 1997/11

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