E3S Web Conf.
Volume 205, 20202nd International Conference on Energy Geotechnics (ICEGT 2020)
|Number of page(s)||7|
|Section||Issues Related to Energy Piles|
|Published online||18 November 2020|
Numerical modelling of heat exchanger pile in pyroclastic soil
Department of civil, architectural and environmental engineering, Polytechnique and Basic Sciences School, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy.
* Corresponding author: email@example.com
Energy piles are an innovative technology that couples the role of the structural foundation to the role of the heat exchanger to satisfy the energy needs of buildings and infrastructures. In the last decade insight into the mechanisms governing the thermo-mechanical response of single energy piles have been gained via full-scale in-situ tests, numerical analyses and model-scale experiments. The numerical approaches allow testing a large variety of configurations, geometries, materials, thermo-mechanical loadings and boundary conditions in a rather controlled but relatively easy and cost-effective manner. As a widespread habit it should be remarked that the temperature changes adopted in the piles have been only rarely justified based on realistic heating and cooling demands of live buildings. This numerical study investigates the effects of combination of mechanical and thermal loads on the mechanical behaviour of a single energy pile embedded in a typical pyroclastic soil deposit of Campania region, in Southern Italy. Thermal loads over one year have been determined by means of Design Builder software analysing a building in Napoli; the intermittent operation of the heat pump over daily time scale is properly modelled in the coupled thermo-hydro-mechanical axisymmetric FE analyses. A sensitivity analysis has been carried out to investigate the effects of the surface thermal boundary conditions.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.