Geothermal energy in loess

Abstract

Ground-source heat pump (GSHP) systems efficiently heat and cool buildings by using sustainable geothermal energy accessed by way of ground heat exchangers (GHEs). Loess covers vast parts of the world, about 10% of the landmass; therefore, the use of piles or ‘micropiles’ is extensive in these areas, particularly where the thickness of loessic soils is significant. These deep foundations have the potential to be used as ‘energy piles’ in GSHP systems, with a minimal additional cost. This paper presents a case study of a representative real building in Córdoba, Argentina, where foundations are also used as GHEs. The thermal properties of local soils were experimentally measured and used in re..