Correlation of thermal conductivity and electrical resistivity of soil - For near surface geothermal applications

Fragkogiannis, G; Apostolopoulos, G; Stamataki, S

dc.contributor.author	Fragkogiannis, G	en
dc.contributor.author	Apostolopoulos, G	en
dc.contributor.author	Stamataki, S	en
dc.date.accessioned	2014-03-01T02:52:38Z
dc.date.available	2014-03-01T02:52:38Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35964
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-78249283215&partnerID=40&md5=e5b5a2f4a0b3c911f1a318797990ae3d	en
dc.subject.other	Critical parameter	en
dc.subject.other	Dry density	en
dc.subject.other	Electrical resistivity	en
dc.subject.other	Electrical resistivity tomography	en
dc.subject.other	Empirical correlations	en
dc.subject.other	Engineering applications	en
dc.subject.other	Experimental determination	en
dc.subject.other	Geotechnical data	en
dc.subject.other	Grain size	en
dc.subject.other	Mineral composition	en
dc.subject.other	Mineralogical compositions	en
dc.subject.other	Moisture contents	en
dc.subject.other	Near-surface	en
dc.subject.other	Over the airs	en
dc.subject.other	Pore space	en
dc.subject.other	Presence of water	en
dc.subject.other	Soil thermal conductivity	en
dc.subject.other	Soil types	en
dc.subject.other	Electric conductivity	en
dc.subject.other	Engineering exhibitions	en
dc.subject.other	Engineers	en
dc.subject.other	Grain size and shape	en
dc.subject.other	Moisture	en
dc.subject.other	Moisture determination	en
dc.subject.other	Petroleum engineering	en
dc.subject.other	Thermal conductivity	en
dc.subject.other	Thermoanalysis	en
dc.subject.other	Tomography	en
dc.subject.other	Soils	en
dc.title	Correlation of thermal conductivity and electrical resistivity of soil - For near surface geothermal applications	en
heal.type	conferenceItem	en
heal.publicationDate	2010	en
heal.abstract	Soil thermal conductivity (k) is a critical parameter in various engineering applications, where heat transfer takes place and depends on numerous factors such as mineralogical composition, grain size of soil and physical properties (moisture, dry density, saturation). Same factors have also an influence on the electrical resistivity of soil (ρ). This work presents an experimental determination of soil thermal conductivity and electrical resistivity, in various soil types with different grain size and mineral composition, in terms of variable moisture content and dry density. The change of thermal (k) and electrical (inverse of resistivity, ρ) conductivity values in terms of the increasing saturation is interpreted with the increasing presence of water over the air in the pore space that facilitates heat and current transportation. The study of thermal conductivity and electrical resistivity variation according to the fluctuation of physical properties of soils, can lead to the qualitatively and quantitatively correlation between kand ρ. Such an empirical correlation can be used to estimate the thermal conductivity of subsurface, by applying electrical resistivity tomography in combination with geotechnical data. At the present time, it is a subject of further research exploiting various models of k and φ.	en
heal.journalName	Society of Petroleum Engineers - 72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010 - Incorporating SPE EUROPEC 2010	en
dc.identifier.volume	6	en
dc.identifier.spage	3989	en
dc.identifier.epage	3993	en