08 August 2007

Analysis of heat pump systems using the arsenal research standardised monitoring methodology


The association of Austrian Electricity Companies has funded a project with the aim of developing, testing
and evaluating a standardised monitoring methodology for heat pump systems. The results should
provide a base for heat pump manufacturers, installers, energy providers, stakeholders and funding
agencies.
In view of political aspirations particularly in the fi eld of CO2 reduction, the application of renewable
energy is a central topic. Heat pumps can thus signifi cantly contribute to a sustainable energy
supply.
Monitoring was split into three parts: Part 1 included a questionnaire regarding the non-measurable
data, Part 2 consisted of a system for continuous data collection and the recording of measured data,
while Part 3 included the development of a data base for the administration and evaluation of the measured
data.
Nine heat pumps were monitored and analysed in the project. For reasons of comparability, only
direct-expansion heat pumps were chosen.
This report presents the monitoring methodology used in the arsenal research standards. The results
of the fi rst measurements – analysis of the seasonal performance factor (SPF), energy costs and TEWI
(Total Equivalent Warming Impact) – are described. In addition, there is a comparison of the pollutant
emissions which result from the power generation for the operation of the heat pump and the emissions
of a gas or oil boiler.