Northwestern Michigan College Formation Thermal Conductivity Test Report
This report summarizes a formation thermal conductivity test performed July 29-31, 2025 on a579-ft vertical bore at Northwestern Michigan College in Traverse City, Michigan. It describes the test setup, operating conditions, data acquisition procedures, calibration details, and bore construction information, with loop temperatures and heat-input measurements collected at five-minute intervals. Using the line-source analysis method consistent with ASHRAE and IGSHPA guidelines, the test produced an average formation thermal conductivity of 1.34 Btu/hr-ft-F, accompanied by figures and summary statistics documenting the measured response.
Citation Formats
TY - DATA
AB - This report summarizes a formation thermal conductivity test performed July 29-31, 2025 on a579-ft vertical bore at Northwestern Michigan College in Traverse City, Michigan. It describes the test setup, operating conditions, data acquisition procedures, calibration details, and bore construction information, with loop temperatures and heat-input measurements collected at five-minute intervals. Using the line-source analysis method consistent with ASHRAE and IGSHPA guidelines, the test produced an average formation thermal conductivity of 1.34 Btu/hr-ft-F, accompanied by figures and summary statistics documenting the measured response.
AU - Streich, Galen
DB - Geothermal Data Repository
DP - Open EI | National Renewable Energy Laboratory
DO -
KW - geothermal
KW - well data
KW - bore
KW - thermal conductivity
KW - thermal conductivity test
KW - geothermal borehole
KW - vertical closed-loop system
KW - line-source
KW - loop temperature
KW - thermal diffusivity
KW - undistrurbed formation temperature
KW - drilling log
KW - district heating and cooling
KW - processed data
KW - technical report
KW - ASHRAE
KW - calibration
LA - English
DA - 2025/07/31
PY - 2025
PB - Northwestern Michigan College
T1 - Northwestern Michigan College Formation Thermal Conductivity Test Report
UR - https://gdr.openei.org/submissions/1801
ER -
Streich, Galen. Northwestern Michigan College Formation Thermal Conductivity Test Report. Northwestern Michigan College, 31 July, 2025, Geothermal Data Repository. https://gdr.openei.org/submissions/1801.
Streich, G. (2025). Northwestern Michigan College Formation Thermal Conductivity Test Report. [Data set]. Geothermal Data Repository. Northwestern Michigan College. https://gdr.openei.org/submissions/1801
Streich, Galen. Northwestern Michigan College Formation Thermal Conductivity Test Report. Northwestern Michigan College, July, 31, 2025. Distributed by Geothermal Data Repository. https://gdr.openei.org/submissions/1801
@misc{GDR_Dataset_1801,
title = {Northwestern Michigan College Formation Thermal Conductivity Test Report},
author = {Streich, Galen},
abstractNote = {This report summarizes a formation thermal conductivity test performed July 29-31, 2025 on a579-ft vertical bore at Northwestern Michigan College in Traverse City, Michigan. It describes the test setup, operating conditions, data acquisition procedures, calibration details, and bore construction information, with loop temperatures and heat-input measurements collected at five-minute intervals. Using the line-source analysis method consistent with ASHRAE and IGSHPA guidelines, the test produced an average formation thermal conductivity of 1.34 Btu/hr-ft-F, accompanied by figures and summary statistics documenting the measured response.},
url = {https://gdr.openei.org/submissions/1801},
year = {2025},
howpublished = {Geothermal Data Repository, Northwestern Michigan College, https://gdr.openei.org/submissions/1801},
note = {Accessed: 2026-01-05}
}
Details
Data from Jul 31, 2025
Last updated Nov 21, 2025
Submitted Nov 21, 2025
Organization
Northwestern Michigan College
Contact
Patrick Quinlan
231.995.1114
Authors
Keywords
geothermal, well data, bore, thermal conductivity, thermal conductivity test, geothermal borehole, vertical closed-loop system, line-source, loop temperature, thermal diffusivity, undistrurbed formation temperature, drilling log, district heating and cooling, processed data, technical report, ASHRAE, calibrationDOE Project Details
Project Name Northwestern Michigan College Campus Geothermal Project
Project Lead Alexandra Prisjatschew
Project Number EE0010795
