Share

IIR document

Bivalent heat pump system with wood-fired boiler.

Author(s) : AFJEI T., WITTWER D.

Summary

Electric heat pumps in Switzerland play an important role in the reduction of global warming. One of the key factors is the favorable Swiss electicity mix with 61% hydraulic and 37% nuclear power plants. Bivalent heating systems using biomass and electricity offer an excellent opportunity to reduce the overall CO2 emissions and facilitate the load management for electricity production as well. A combined system is used for room and tap water heating. The complete system including controls is simulated with an extended version of the PC simulation program YUM (Yearly Utilization Model). There the dynamic behaviour of the system can be simulated in discrete time steps with a resolution of up to 3 minutes. The implemented models are validated against measurements of two pilot plants, where the simulation shows a good agreement with the measurements. The main uncertainty is the actual user behaviour in operating the wood furnace. Due to the user adaptative automatic operation of the heat pump, the combined system offers a higher comfort, including frost security, and the possibility to heat the tap water efficiently throughout the year.

Available documents

Format PDF

Pages: 1097-1104

This document is to be digitised and will be available within 10 working days

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Bivalent heat pump system with wood-fired boiler.
  • Record ID : 1996-3057
  • Languages: English
  • Source: For a Better Quality of Life. 19th International Congress of Refrigeration.
  • Publication date: 1995/08/20
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles from the proceedings (488)
See the conference proceedings

Indexing