RT Journal Article T1 Ground thermal diffusivity calculation by direct soil temperature measurement : application to very low enthalpy geothermal energy systems A1 Andújar Márquez, José Manuel A1 Martínez Bohórquez, Miguel Ángel A1 Gómez Melgar, Sergio Jesús AB This paper presents a methodology and instrumentation system for the indirectmeasurement of the thermal diffusivity of a soil at a given depth from measuring its temperature atthat depth. The development has been carried out considering its application to the design and sizingof very low enthalpy geothermal energy (VLEGE) systems, but it can has many other applications,for example in construction, agriculture or biology. The methodology is simple and inexpensivebecause it can take advantage of the prescriptive geotechnical drilling prior to the construction ofa house or building, to take at the same time temperature measurements that will allow get theactual temperature and ground thermal diffusivity to the depth of interest. The methodology anddeveloped system have been tested and used in the design of a VLEGE facility for a chalet withbasement at the outskirts of Huelva (a city in the southwest of Spain). Experimental results validatethe proposed approach. PB MDPI SN 1424-8220 YR 2016 FD 2016 LK http://hdl.handle.net/10272/11799 UL http://hdl.handle.net/10272/11799 LA eng NO Andújar Márquez, J.M., Martínez Bohórquez, M.A., Gómez Melgar, S.J.: "Ground thermal diffusivity calculation by direct soil temperature measurement : application to very low enthalpy geothermal energy systems". Sensors. Vol. 16, n. 3, 306, (2016). DOI: 10.3390/s16030306 NO This work is a contribution of the DPI2013-43870 Project supported by the Spanish Ministry of Economy and Competitiveness. This provides funds for covering the costs to publish in open access. DS Repositorio Institucional de la Universidad de Huelva RD 14 jul 2026