SEasonal PErformance factor and MOnitoring for heat pump systems in the building sector
The IEE project aimed at overcoming market barriers to a wider application of heat pumps, namely the lack of robust data on the conditions "in real installations" influencing reliability and seasonal efficiency, i.e. the seasonal performance factor (SPF) of heat pump systems across Europe. The objective was to get a broader acceptance of heat pump systems and improved quality assurance for heat pump systems in the building sector.
The project focused on the deployment of all types of heat pumps (air, water and ground) in residential buildings. One key requirement to achieve awareness about real life performance is a universal methodology for field measurement of heat pump systems SPF. Such methodology requires a systems perspective including not only the efficiency of the heat pump unit/system but also the respective regional building standards and climate conditions.
- Development of a common methodology for field measurement of heat pump systems and calculation and monitoring of SPF.
- Collection and evaluation of already running field measurements on heat pump systems. It was found that no standard methodology was used in earlier made field monitoring, but fragments were similar, so it was easier to get acceptance for setting up of system boundaries. A Swedish field standard was used as inspiration for the development of the methodology.
- New field measurements on heat pump systems using a common methodology were performed. In total, 52 buildings were investigated for field monitoring and equipped with field monitoring equipment. Of these, 47 have had results been published on the SEPEMO website.
- Improvement and extension of existing guidelines, to include all types of heat pumps, for installation of energy efficient and reliable heat pump systems taking into account regional constraints as well as the building standards.
- Existing methods for field measurement and calculation of heat pump systems SPF were evaluated. Recommendations for new field measurement methods.
- Monitoring is expensive and time consuming. However, very valuable insights about heating system performance can be acquired. In this project, it has been shown that the biggest improvements in existing heat pump systems can be made in the heat distribution system.
- Inspire and educate installers! Although much of the improvement is in the heat distribution system , installers should not be blamed. There is little information on whole system design available in training material, and a holistic view is seldom taken. This project has delivered knowledge on how this can be overcome to the EUCERT certification. Since the closing of the project, Denmark and Poland have joined the EUCERT which now includes 14 member states.
- Dissemination to key stakeholders is difficult! The aim was to reach out policy makers, industry (manufacturers, project developers, architects) & installers. In order to do so, the dissemination key messages were limited to a few (System boundaries, comparability, installer training, RES contribution). Although we organized a number of high level meetings & workshops, the number of policy makers was not ideal. Industry interest was good, as the issues were important for industry’s development.
Project duration: June 2009 to May 2012.