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Small-capacity ammonia/water absorption heat pump for heating and cooling.

Author(s) : MOSER H., RIEBERER R., BÖCK M.

Summary

This paper describes the system layout, mathematical model and first experimental results of a small-capacity ammonia/water absorption heat pumping unit (cooling capacity 5 kW) which is designed for both heating and cooling purpose and shall be driven by a biomass boiler in order to reduce the energy demand as well as to increase the share of renewables in the cooling/refrigeration sector. In order to reduce the first costs standard plate heat exchangers has been used for all heat exchangers including absorber and generator. For purification of the refrigerant a rectification column with a dephlegmator cooled by the rich solution has been developed and installed downstream the generator. The COPH of the mathematical model varies approximately linear from about 1.75 to 1.4 for a temperature lift of 10 to 50 K. The experimental results show a similar correlation but approximately 7.5% below the results of the mathematical model for COPH.

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Pages: ICR07-E2-1093

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Details

  • Original title: Small-capacity ammonia/water absorption heat pump for heating and cooling.
  • Record ID : 2007-2286
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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