A conference paper on long-term performance monitoring of GSHP systems has been published in the proceedings from Piling 2020, as a result from the work within IEA HPT Annex 52:
Turner, J.L., F. Loveridge, S. Rees, W. Powrie, M Crane, J. Kiauk., K.G. Higgins, Y. Ainsworty, D.G. Toll, and A.S. Osman . (2021).Energy Performance of CFA Piles Used as Heat Exchangers in a GSHP System. Piling 2020 Conference Proceedings. January 2021, 523-527. https://www.icevirtuallibrary.com/doi/full/10.1680/pttc.65048.523
So far six scientific journal paper and five conference papers have been published based on work and case studies within the IEA HPT Annex 52. Along with the previously published journal papers, two sets of open access reference data, free to use by researchers and developers, are provided.