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Naslov:Evaluation of thermal conductivity estimation models with laboratory-measured thermal conductivities of sediments
Avtorji:ID Adrinek, Simona (Avtor)
ID Singh, Rao Martand (Avtor)
ID Janža, Mitja (Avtor)
ID Żeruń, Mateusz (Avtor)
ID Ryżyński, Grzegorz (Avtor)
Datoteke:.pdf PDF - Predstavitvena datoteka, prenos (2,61 MB)
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Jezik:Angleški jezik
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:Logo GeoZS - Geološki zavod Slovenije
Povzetek:Thermal conductivity is one of the key parameters for estimating low-temperature geothermal potential. In addition to field techniques, it can be determined based on physical parameters of the sediment measured in the laboratory. Following the methodology for cohesive and non-cohesive sample preparation, laboratory measurements were carried out on 30 samples of sediments. Density, porosity and water content of samples were measured and used in thermal conductivity estimation models (TCEM). The bulk thermal conductivity (λb) calculated with six TCEMs was compared with the measured λb to evaluate the predictive capacity of the analytical methods used. The results show that the empirical TCEMs are suitable to predict the λb of the analysed sediment types, with the standard deviation of the residuals (RMSE) ranging from 0.11 to 0.35 Wm−1 K−1. To improve the fit, this study provides a new modified parameterisation of two empirical TCEMs (Kersten and Côté&Konrad model) and, therefore, suggests the most suitable TCEMs for specific sample conditions. The RMSE ranges from 0.11 to 0.29 Wm−1 K−1. Mixing TCEM showed an RMSE of up to 2.00 Wm−1 K−1, meaning they are not suitable for predicting sediment λb. The study provides an insight into the analytical determination of thermal conductivity based on the physical properties of sediments. The results can help to estimate the low-temperature geothermal potential more quickly and easily and promote the sustainable use of this renewable energy source, which has applications in environmental and engineering science.
Ključne besede:thermal conductivity, non-cohesive sediment, cohesive sediment, estimation model
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.01.2022
Založnik:Springer Nature
Leto izida:2022
Št. strani:15 str.
Številčenje:vol. 81
PID:20.500.12556/DiRROS-15395 Novo okno
UDK:550.3
ISSN pri članku:1866-6280
DOI:10.1007/s12665-022-10505-7 Novo okno
COBISS.SI-ID:119122179 Novo okno
Datum objave v DiRROS:25.08.2022
Število ogledov:1253
Število prenosov:524
Metapodatki:XML DC-XML DC-RDF
:
ADRINEK, Simona, SINGH, Rao Martand, JANŽA, Mitja, ŻERUŃ, Mateusz in RYŻYŃSKI, Grzegorz, 2022, Evaluation of thermal conductivity estimation models with laboratory-measured thermal conductivities of sediments. Environmental earth sciences [na spletu]. 2022. Vol. 81. [Dostopano 17 april 2025]. DOI 10.1007/s12665-022-10505-7. Pridobljeno s: https://dirros.openscience.si/IzpisGradiva.php?lang=slv&id=15395
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Gradivo je del revije

Naslov:Environmental earth sciences
Založnik:Springer Nature
Leto izida:2022
ISSN:1866-6280

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P1-0020
Naslov:Podzemne vode in geokemija

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:18.07.2022

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