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Field Performance of Domestic Heat Pumps for Heating and Hot Water in Switzerland.

Number: No 059

Author(s) : KUSTER R., PRINZING M., BERTHOLD M., ARPAGAUS C., ESCHMANN M., BERTSCH S. S.

Summary

This study presents the development, the methods, and the state of the art of heat pump field tests as they are currently carried out by the Heat Pump Test Center (WPZ) in Buchs. Since 2016, heat pumps for hydronic heating systems in single-family houses in Switzerland have been investigated. So far, nearly 20 air-source and geothermal heat pumps, primarily located in the lowlands have been added to this governmental quality assurance program. For each heat pump system, calibrated sensors record approximately 50 data points at 10 seconds intervals, which ensures very low measurement uncertainty. The aim of this field study is to record the efficiency of the real systems in operation and to draw comparisons with characteristic parameters from laboratory measurements and manufacturer data. Further goals are the identification and optimization of possible deficiencies in planning and installation as well as in the controls of the heat pump devices. The results of field measurements show the importance of careful design and installation of these systems. The optimal integration in retrofit systems (building renovations) is also a major challenge. Heat pumps installed in new and refurbished buildings have been investigated with different system boundaries. The results show significant differences between the systems as well as typical installation faults. After a year of baseline performance evaluation, the systems are optimized to determine the potential of such measures and better define guidelines for planners and installers. An overview of such measures is also presented.

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Pages: 10 p.

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Details

  • Original title: Field Performance of Domestic Heat Pumps for Heating and Hot Water in Switzerland.
  • Record ID : 30029957
  • Languages: English
  • Subject: Technology
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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