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Table 5 Variation of geothermal gradient with different specific heat extraction rates

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)

Specific heat extraction rate imposed on the DBHE (W m−1)

Description

3A

0.03

100

Standard geothermal gradient

3B

0.04

100

Elevated geothermal gradient

3C

0.04

200

Elevated geothermal gradient

3D

0.04

Var.

Elevated geothermal gradient