Collection and Analysis of Soil Thermal Property Data under Minnesota's Local Conditions
2021-08-10
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Collection and Analysis of Soil Thermal Property Data under Minnesota's Local Conditions
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2021-08-10
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The aim of this research was to collect and collate soil thermal property data across Minnesota to
support the ongoing modelling of Ground Source Heat Pump systems (GSHPs). The soil properties
of interest essential in the numerical modelling of GSHPs are thermal conductivity, density,
specific heat capacity, soil layers by depth and water content. With the knowledge of these
properties, the precise performance of a GSHP at a given location can be numerically established.
Soil thermal property data was obtained by reaching out to Northern Groundsource Inc which is a
geothermal systems company in Minnesota. Data was also obtained from the Minnesota State
Climatology Office, University of Minnesota Extension, Minnesota Emergency Communications
Board and Minnesota Pollution Control Agency by searching their databases and websites. The
predominant soils in Southwest and South-central Minnesota which are loamy soils exhibited the
highest thermal conductivity as compared to other regions. The properties were measured up to a depth of
1.83 meters and would be suitable for the design of horizontal GSHPs which are usually installed
between 1.524 m and 3.048 m.
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University of Minnesota's Undergraduate Research Opportunities Program
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Tom, Gloria W. (2021). Collection and Analysis of Soil Thermal Property Data under Minnesota's Local Conditions. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/223070.
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