Experimental calibration of underground heat transfer models under a winery building in a rural area
2017
Ground temperature and hydrogeological conditions are key parameters for many engineering applications, such as the
design of building basements and underground spaces and the assessment of shallow geothermal energy potential.
Especially in urban areas, in the very shallow depths, it is diffi cult to fi nd natural undisturbed underground thermal
conditions because of anthropic interventions. The assessment of underground behaviour in disturbed conditions will
become more and more relevant because of increasing awareness to energy effi ciency and renewable energy topics. The
purpose of this paper is to show a three-dimensional representation - based on models calibrated on experimental data
- of the underground thermal behaviour aff ected by a building in a rural area in Italy. Temperature varies in space and
time and it depends on ground, climate and building characteristics, and all these parameters are taken into account by
the seasonal periodic modelling implemented. The results obtained in a context of low urbanization indirectly suggest
the importance of these eff ects in dense urban areas; taking greater account of these aspects could lead to improvements
in the design of underground spaces and geo-exchanger fi elds for geothermal energy exploitation.
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