A method to estimate the hydraulic conductivity of the ground by TRT analysis

Validerad; 2017; Nivå 2; 2017-02-02 (andbra)
An accurate knowledge of aquifers properties is important 2 in many disciplines, from hydrology to site characterization in order to designing and implementing remediation strategies, as well as geothermal ground source technologies. In par5 ticular, the groundwater flow rate is a fundamental parameter to be considered in the ground-coupled heat exchangers (GCHEs) design, together with the thermal properties of the ground. In fact, even relatively low flow rate entail temperature changes considerably lower than in the case of pure heat conduction (Gehlin and Hellström, 2003; Fan et al., 2007) and then relatively stable underground temper10 atures which allow heat pumps to operate with very efficient performance coefficients, thereby reducing energy costs (Lee et al., 2012). Moreover, an accurate knowledge of groundwater velocity and ground thermal properties allows a better design and dimensioning of the GCHE, with further reduction of costs. The objective of this paper is to propose an expeditious, graphical method to estimate the groundwater flow velocity from TRT analysis.

Nordell, BoLuleå tekniska universitet,Arkitektur och vatten(Swepub:ltu)bon (author)
Gehlin, SignhildSwedish Centre for Shallow Geothermal Energy (author)
Luleå tekniska universitetArkitektur och vatten (creator_code:org_t)

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Civil Engineerin ...; and Water Engineerin ...

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