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Table 1 Model thermal and hydraulic parameters

From: A numerical investigation of combined heat storage and extraction in deep geothermal reservoirs

Parameter

Reservoir

Confining bed

Thickness (m)

50

500

Hydraulic conductivity (m/s)

4 × 10−6

10−11

Specific storage (1/m)

2 × 10−6

2 × 10−6

Thermal conductivity of matrix (W/m/°K)

6.0

2.0

Thermal conductivity of fluid (W/m/°K)

0.62

0.62

Volumetric heat capacity of matrix (MJ/m3/°K)

2.3

2.3

Volumetric heat capacity of fluid (MJ/m3/°K)

4.0

4.0

Longitudinal dispersivity (m)

10

10

Transverse dispersivity (m)

1

1

Porosity (%)

25

25