Merge branch '10-update-docs-home-page' into 'main'

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**Geoloop** is a Python package for simulating borehole heat exchanger (BHE) systems,

with a focus on optimal implementation of subsurface thermal properties and their impact on system performance.

**Geoloop** is a Python package for simulating vertical borehole heat exchanger (BHE) systems,

with a focus on the impact of depth-dependent thermal properties and geothermal gradient and their impact on system performance.

**Geoloop** incorporates (uncertainty in) depth-variations in subsurface thermal conductivity, subsurface temperature, 

BHE design and diverse operational boundary conditions such as seasonal load variations or 

minimum fluid temperatures, in a tool for deterministic or stochastic performance analyses with the opportunity

for optimization of the system design and operation. This makes Geoloop ideal for scenario analyses and sensitivity 

minimum fluid temperatures. It allows for deterministic or stochastic performance analyses with the opportunity

for optimization of the system design and operation. This makes Geoloop well suited for scenario analyses and sensitivity 

studies in both research and practical applications.

**Geoloop** uses thermal response factors (*g*-functions) calculated using the analytical Finite Line Source model from 

the *pygfunction* package. This setup is extended into a stacked approach for depth-dependent thermal response calculations. 

A detailed description and benchmark of this depth-dependent semi-analytical method is provided in Korevaar & Van Wees (in prep.).

**Geoloop's** generic framework allows for easy switching between simulation methods, including the innovative depth-dependent

semi-analytical approach, the depth-uniform implementation of g-functions as implemented in *pygfunction* and a numerical 

**Geoloop**  provides a novel depth-dependent approach for thermal response calculations. 

A detailed description and benchmark of this depth-dependent semi-analytical method is provided in Korevaar et al. (2026).

**Geoloop** uses the *pygfunction* package, developed by Cimmino & Cook (2022), including its implementation

of *g*-functions, time aggregation schemes for varying loads, borehole and fluid thermal properties, and various visualization capabilities

**Geoloop's** generic framework allows for easy switching between simulation methods, including the 

depth-dependent model, the depth-uniform implementation of g-functions as implemented in *pygfunction* and a numerical 

finite volume approach.

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*Geoloop* was developed as part of an innovation project with industry partners (grant no. **MOOI322009**),

funded by the **Dutch Ministry of Climate and Green Growth**.

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## References

- Cimmino, M. and Cook, J.: pygfunction 2.2: New features and improvements in accuracy and computational efficiency, 

        in: Proceedings of the IGSHPA Research Track 2022, International Ground Source Heat Pump Association, 

        https://doi.org/10.22488/okstate.22.000015, 2022. 

- Korevaar, Z., Brett, H., Van Wees, J.D.: Geoloop (v1.0) – a stochastic, depth-dependent borehole heat exchanger model, Geoscientific Model Development (in prep), 2026

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