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IIR document

Experimental analysis of a gas-fired absorption heat pump with a refrigerant cooled flue gas heat exchanger.

Number: pap. n. 214

Author(s) : WAGNER P., RIEBERER R.

Summary

Residential heating has a significant potential in the reduction of energy consumption and CO2 emissions. A relevant contribution can be expected from gas-fired ammonia/water absorption heat pumps (GAHPs). Commonly the return flow of the heat distribution system is used to cool the combustion gas below the dew point to condensate water vapour and to minimize latent heat losses. Especially in retrofit applications the temperature of the heat distribution system is too high to condensate water vapour. To use the latent heat under all operating conditions, a GAHP can be equipped with a refrigerant cooled flue gas heat exchanger between the evaporator and the absorber. Therefore, an increase in efficiency can be achieved. Measurements were carried out to determine the increase in efficiency using a refrigerant cooled flue gas heat exchanger. The GAHP was operated at different operating conditions and different cycle configurations.

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Pages: 8

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Details

  • Original title: Experimental analysis of a gas-fired absorption heat pump with a refrigerant cooled flue gas heat exchanger.
  • Record ID : 30026435
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0214

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