G-Function Library for Modeling Vertical Bore Ground Heat Exchanger
type: Dataset
description: This library contains g-functions (thermal response functions) for standard, regularly spaced vertical borehole ground heat exchangers. In total, it contains 34, 321 configurations. To permit interpolation, each configuration has g-functions for heights of 24, 48, 96, 192, and 384 m. All the g-functions were calculated with burial depths of 2m, and borehole diameters of 15 to 17.5 cm, depending on height. In configurations with uniform spacing, the spacing between the boreholes is set to 5m, though it can be scaled to other horizontal spacings.
issued: 2021-06-30T06:00:00+00:00
modified: 2021-10-31T06:00:01+00:00
spatial: Location
contact point: Organization
  fn: Xiaobing Liu
keyword: amerigeo
keyword: amerigeoss
keyword: ckan
keyword: energy
keyword: g-function
keyword: geo
keyword: geoss
keyword: geothermal
keyword: ghp
keyword: ground-heat-exchanger
keyword: ground-heat-pump
keyword: heat-exchanger
keyword: heat-pump
keyword: library
keyword: model
keyword: national
keyword: north-america
keyword: simulation
keyword: thermal-response-functions
keyword: united-states

G-Function Library 1.0.zip
type: Distribution
description: This library contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers. In total, it contains 34, 321 configurations. Included is a library guide that outlines what is included in the archive and instructions for using it.
format: ZIP
issued: 2022-08-08T12:35:22.031123
modified: 2025-11-23T00:43:31.017207
access URL: https://gdr.openei.org/files/1325/g-function_library_1.0.zip
media type: application/zip

Lopsided U Configurations 5m.json
type: Distribution
description: Contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers in the lopsided U configuration. These configurations consist of U cases that have had some number of boreholes removed from their right side. These configurations all have a single row of perimeter boreholes.
format: JSON
issued: 2022-08-08T12:35:22.031178
modified: 2025-11-23T00:43:31.020575
access URL: https://gdr.openei.org/files/1325/LopU_configurations_5m_v1.0%20%281%29.json
media type: application/octet-stream

Open Rectangle Configurations 5m.json
type: Distribution
description: Contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers in the open rectangle configuration. These configurations represent N by M rectangular cases where boreholes are only around the perimeter, but the perimeter can have more than one row of boreholes.
format: JSON
issued: 2022-08-08T12:35:22.031148
modified: 2025-11-23T00:43:31.018454
access URL: https://gdr.openei.org/files/1325/Open_configurations_5m_v1.0%20%281%29.json
media type: application/octet-stream

U Configurations 5m.json
type: Distribution
description: Contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers in the U configuration. This type of configuration is U-shaped, with an opening at the top. The U may have up to 3 perimeter rows of boreholes around all sides of the U. The number of perimeter rows is represented with “t.”
format: JSON
issued: 2022-08-08T12:35:22.031173
modified: 2025-11-23T00:43:31.020209
access URL: https://gdr.openei.org/files/1325/U_configurations_5m_v1.0%20%281%29.json
media type: application/octet-stream

L Configurations 5m.json
type: Distribution
description: Contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers in the L configuration. These configurations consist of a line N boreholes long and M boreholes wide. The L cases have a single row of boreholes.
format: JSON
issued: 2022-08-08T12:35:22.031135
modified: 2025-11-23T00:43:31.017636
access URL: https://gdr.openei.org/files/1325/L_configurations_5m_v1.0%20%281%29.json
media type: application/octet-stream

C Configurations 5m.json
type: Distribution
description: Contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers in the C configuration. This type of configuration may be thought of as an open rectangle configuration that has had some number of boreholes removed from the top side.
format: JSON
issued: 2022-08-08T12:35:22.031141
modified: 2025-11-23T00:43:31.018041
access URL: https://gdr.openei.org/files/1325/C_configurations_5m_v1.0%20%281%29.json
media type: application/octet-stream

Open Rectangle Configurations 5m.json
type: Distribution
description: Contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers in the open rectangle configuration. These configurations represent N by M rectangular cases where boreholes are only around the perimeter, but the perimeter can have more than one row of boreholes.
format: JSON
issued: 2022-08-08T12:35:22.031166
modified: 2025-11-23T00:43:31.019802
access URL: https://gdr.openei.org/files/1325/rectangle_5m_v1.0%20%281%29.json
media type: application/octet-stream

Zoned Rectangles Contained.xlsx
type: Distribution
description: Contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers in the contained zoned rectangle configuration. For each row, Column A shows the number of perimeter boreholes in the x and y directions. Columns B and higher show the available configurations, where each pair represents the number of interior boreholes, which are laid out in a rectangular array, in the x and y directions.
format: XLS
issued: 2022-08-08T12:35:22.031160
modified: 2025-11-23T00:43:31.019274
access URL: https://gdr.openei.org/files/1325/ZRectsContained%20%281%29.xlsx
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Abstract and Library Overview.pdf
type: Distribution
description: This document provides a guide to the data found in the submission. Documentation of json file structure and sample python code can be found in appendix 8.
format: PDF
issued: 2022-08-08T12:35:22.031154
modified: 2025-11-23T00:43:31.018863
access URL: https://gdr.openei.org/files/1325/LibraryOverview_v11.1%20%281%29.pdf
media type: application/pdf

Zoned Rectangle Configuration 5m.json
type: Distribution
description: Contains g-functions for standard, regularly spaced vertical borehole ground heat exchangers in the zoned rectangle configuration. This configuration type has had rows/columns removed from the interior zone to represent configurations where the interior spacing of the bore field is greater than that of the exterior (or perimeter) spacing.
format: JSON
issued: 2022-08-08T12:35:22.031185
modified: 2025-11-23T00:43:31.020941
access URL: https://gdr.openei.org/files/1325/zoned_rectangle_5m_v1.0%20%281%29.json
media type: application/octet-stream

US Migrating
type: Agent