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Table 3 Parameter selection for the sensitivity analysis with Sobol’ indices
Parameter | Symbol |
|---|---|
BHE length | \(L_{BHE}\) |
Dynamic viscosity | \(\mu _{rf}\) |
Grout thermal conductivity | \(\lambda _{gr}\) |
Soil thermal conductivity | \(\lambda _{s}\) |
Specific volumetric heat capacity | \(c_{vs}\) |
Thickness of the layer with groundwater flow | \(t_{aqf}\) |
Flow rate of refrigerant | \({\dot{V}}_{rf}\) |
Annual heat demand | Q |
Darcy velocity | \(v_f\) |
Geothermal gradient | \(\Delta T_{geo}\) |
Variation of the undisturbed subsurface temperature | \(T_{geo}\) |