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Simulation of an absorption chiller operating with alkane mixtures.

Simulation d'une machine frigorifique à absorption fonctionnant avec des mélanges d'alcanes.

Author(s) : CHEKIR N., MEJBRI K., BELLAGI A.

Type of article: Article, IJR article

Summary

The authors propose an absorption chiller operating with binary alkane mixtures as an alternative to compression machines. It is an installation using low-level energy at a temperature below 150°C (waste heat or solar energy) and operating with environmentally friendly fluids. Ten mixtures are considered and compared with two cooling mediums of the condenser and the absorber: the ambient air at 35°C and the water at 25°C. For an air-cooled chiller, the COP reaches 0.37 for the n-butane/octane system. This value remains 27% lower than that of an ammonia/water installation operating under the same conditions. For a water-cooling chiller, the n-butane/octane and propane/octane systems give a COP of about 0.63, which is comparable to that of the ammonia/water system. When n-butane is used as refrigerant, the machine works at a pressure under 5 bars, which is an advantage compared with machines working with ammonia/water mixtures.

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Pages: 469-475

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Details

  • Original title: Simulation d'une machine frigorifique à absorption fonctionnant avec des mélanges d'alcanes.
  • Record ID : 2006-1208
  • Languages: French
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 3
  • Publication date: 2006/05

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