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Table 2 Parameter of the horizontal BHE model

From: First field application of temperature sensor modules for groundwater flow detection near borehole heat exchanger

Parameter

Value

Model dimensions

150 × 150, 3.2 mm to 4 cm

Pipe diameter

32 mm

Thermal conductivity of cement

2 W m−1 K−1

Thermal conductivity of soil

2.97 W m−1 K−1 (@ 82 m), 3.4 W m−1 K−1 (@ 94 m)

Inlet temperature

13.8 °C

Outlet temperature

13.7 °C (@ 82 m), 13.75 °C (@ 94 m)

Undisturbed soil temperature

12 °C (@ 82 m), 12.4 °C (@ 94 m)