Study of Geothermal Energy Piles (GEPs) for Sustainable Climatization of Structures in Brazil

This report is based on a comprehensive bibliographic review on the subject of superficial geothermal energy structures (SGES), more specifically on interconnected ground source heat pumps (GSHP) and geothermal energy piles (GEP), or borehole heat exchangers (BHE), that took place during the 6 months sabbatical leave of the Professor in Portugal. Several key ideas, comments, research suggestions and conclusions were raised in each of following discussed themes of this report: 1. Review on key findings on field scale studies on the thermomechanical behavior and thermal performance of GEP systems; 2. Review on key findings on laboratory studies on the thermomechanical behavior and thermal performance of GEP systems; 3. Review on key findings on numerical studies on the thermomechanical behavior and thermal performance of GEP systems; 4. Key findings on miscellaneous knowledge related to soils and GEP systems; 5. Key findings on research theses in Brazil and Portugal about GEP systems; 6. Conclusions on the bibliographic review on GEP systems; 7. Summarized Tables for each of the specific topics. Acknowledgement to the National Council for Scientific and Technological Development (CNPq) of Brazil, Fellowship Process no. 204571/2018-9