IEA HPT Annex 52 has published a new guideline document on how to instrument and collect data from large GSHP systems with focus on performance measurements. The guideline document is published on the HPT Annex 52 webpage under Documents.
Davis, M.J., Martinkauppi, I., Witte, H., Berglöf, K., Vallin, S. (2021). Guideline for Instrumentation and Data – Final Document. IEA HPT Annex 52 – Long-term performance monitoring of GSHP systems serving commercial, institutional and multi-family buildings. https://doi.org/10.23697/tgr4-qn89