A New Numerical Model for the Analysis of Geothermal Cooling Using EAHX Systems
- Autori: Buscemi, A.; Bonomolo, M.; Baglivo, C.; Guarino, S.; Lo Brano, V.; Congedo, P.
- Anno di pubblicazione: 2025
- Tipologia: Contributo in atti di convegno pubblicato in volume
- OA Link: http://hdl.handle.net/10447/711547
Abstract
Growing adoption of renewable energy makes shallow-geothermal systems viable for building cooling and water harvesting. This study develops a multi-physics finite- element model of a earth-to-air heat exchangers system (EAHX) that includes the soil–atmosphere energy balance. Calibrated with Typical Meteorological Year data and on-site measurements in Palermo, Italy, the model predicts that continuous summer operation of a 24 m horizontal exchanger buried 2.5 m deep cools. On average, this system can decrease inlet air temperature from 28.5 °C to 26.7 °C, supplying 476 W of cooling with negligible water-vapor condensation. Nighttime soil regeneration further lifts seasonal cooling up from 138 to 162 kWh and boosts overall efficiency by 17 % over baseline