Uncertainty and instrumentation guidelines progress at condensed 5th Annex 52 expert’s electronic meeting in March

Due to the pandemic new corona virus outbreak this year, the 5^th international experts’ meeting of IEA HPT Annex 52, titled Long-term measurements of GSHP system performance in commercial, institutional and multi-family buildings, had to be held as a short electronic meeting instead of the planned two-days physical meeting in Germany. The two hours electronic meeting on March 20^th gathered 21 experts from six countries.

The annotated bibliography on long-term performance measurements of large GSHP systems now comprises some 76 publications on GSHP systems in 15 countries. Case study reports for the 40 on-going performance monitoring case studies within Annex 52 are now in writing and the first draft reports for case studies with complete data series are expected by September.

Significant progress has been made on the instrumentation guideline and the uncertainty guideline since the 4^th experts meeting in September 2019. A first outline of subtask 3 report about analysis and reporting of GSHP system performance was discussed at the electronic meeting.

The sixth experts’ meeting will take place in Bergen in Norway on October 27^th-28^th 2020.

The seventh experts’ meeting will take place in Braunschweig, Germany, in the spring of 2021.