Share

IIR document

Ground-coupled horizontal CO2-loop as heat source for heat pumps: first operation results.

Author(s) : PRESETSCHNIK A., MITTERMAYR K., KOFINGER C., et al.

Summary

Rising concern for the environmental effects of HFC-refrigerants has resulted in a need to decrease the refrigerant charge in refrigeration and heat pump systems. This issue might strengthen the position of indirect ground-coupled systems compared to direct expansion heat pump systems in the individual residential sector. The paper presents a horizontally installed ground coupled loop using carbon dioxide as secondary fluid as an alternative to conventional ground-coupled heat pumps with indirect systems using water-antifreeze mixtures. The objective of the work was to demonstrate the operational characteristics and performance of a heat pump system for tap water production installed in a single family house using a ground-coupled CO2-loop as the heat source. The results, based on measurements during the first month of operation, showed a performance factor of 3.1 for tap water production. The ongoing monitoring of the system will bring conclusions about the system performance and reliability for a longer time period.

Available documents

Format PDF

Pages: 2006-2

Available

  • Public price

    20 €

  • Member price*

    Free

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

Details

  • Original title: Ground-coupled horizontal CO2-loop as heat source for heat pumps: first operation results.
  • Record ID : 2007-1742
  • Languages: English
  • Source: 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
  • Publication date: 2006/05/29

Links


See other articles from the proceedings (111)
See the conference proceedings

Indexing