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Geothermal Energy

Science – Society – Technology

Table 2 List of all simulated scenarios and features

From: Numerical investigation on the performance, sustainability, and efficiency of the deep borehole heat exchanger system for building heating

Scenario ID

Geothermal gradient (°C m−1)

Pipe wall thermal conductivity (W m−1 K−1)

Grout thermal conductivity (W m−1 K−1)

Soil thermal conductivity (W m−1 K−1)

Operation period (days)

Groundwater flow

0

0.03

Const.

1.3

2.5

120

N

1A–D

0.03

Var.

1.3

2.5

120

N

2A–D

0.03

Const.

Var.

2.5

120

N

3A–D

Var.

Const.

1.3

2.5

120

N

4A–E

0.03

Const.

1.3

Var.

120

N

5A–D

0.03

Const.

1.3

2.5

120

Y

6A–B

0.03

Const.

1.3

2.5

10950 (30 years)

N

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