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Sorption heat pump for flue gas condensation of biomass-fired boilers.

Number: pap. n. 750

Author(s) : HERMANN T., GEIER-PIPPIG J., SCHWEIGLER C.

Summary

Extracting heat from hot flue gas by utilization of condensing technology leads to a significant increase in boiler efficiency. Conventional systems are often limited by unfavorably high return temperatures of the heating system which preclude the use of the extensive potential of the sensible and especially latent heat of the flue gas. In this research the integration of an absorption heat pump (AHP) into the heating system of a wood chips fired boiler is investigated. This allows cooling of the flue gas down to temperatures around 25 °C and serves for upgrading the low grade heat for further utilization in conventional heating systems. Therefore, increases in fuel utilization rate up to 20 % can be achieved. The concept of the heat pump cycle for integration with the biomass boiler is presented, followed by thermodynamic modelling and thermal design of a flue gas-coupled evaporator of the heat pump.

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Pages: 8

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Details

  • Original title: Sorption heat pump for flue gas condensation of biomass-fired boilers.
  • Record ID : 30026478
  • 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.2019.0750

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