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Geothermal Resource Technologies Inc
302 E. Warehouse St, Elkton, South Dakota, United States

Memberships : NA
Industry : Geothermal
Basic Member
Since Oct, 2016
About Company

GRTI is leading the GeoExchange industry through our various services including:

  • Formation Thermal Conductivity Testing (also referred to as In-Situ Testing by others)
    • Complete arrangements for Test Bore Installation
    • Complete Testing and Data Analysis
    • Equipment Leasing and Data Analysis
  • Grout Thermal Conductivity Testing
    • Bentonite-Based Grouts
    • Cement-Based Grouts

Our Mission

GRTI is dedicated to the responsible growth of the GeoExchange industry by providing support through first-hand, practical experience.  We are committed to promoting the highest level of comfort while protecting the environment and reducing the demand on our natural resources while reducing the long-term investment in space conditioning for the general public.

Thermal conductivity is the physical property of a material that determines how easily heat can pass through it. In order to properly size a ground loop heat exchanger for a geothermal heat pump system, knowing the thermal properties of the earth where the heat exchanger is installed is critical. This information can be obtained from a formation thermal conductivity (FTC) test and input directly into most of the popular design software programs.

Importance

The thermal conductivity of the formation determines how easily heat can be conducted to and from bores in a geothermal loopfield. For example, in a formation with high thermal conductivity, the loop temperature required to reject a given amount of heat to the ground would be less than the loop temperature for a formation with a lower thermal conductivity. Higher loop temperatures for cooling result in reduced heat pump performance and higher operating costs.

Why Consider FTC Testing?

  • Proper testing enables ground loops to be sized to match the existing formation conditions.
  • Precision designs save money on drilling, grouting and pipe costs.
  • Proper design allows the system to run more efficiently.
  • The obtained information provides for a better estimate of installation cost.

Why GRTI?

  • Unmatched Experience
    • Over 14 years of experience in measuring and calculating thermal conductivity of various formations.
    • Over 200,000 hours of accumulated data has been analyzed from more than 4,500 separate tests.
  • Data analysis performed by Mechanical Engineers with research backgrounds.
  • Long test times provide a reliable value for average formation thermal conductivity.
  • Dedicated to quality testing and data analysis.
  • Follows ASHRAE recommended procedures as found in the ASHRAE HVAC Applications Handbook and the IGSHPA Design and Installation Standards.
  • GRTI offers a variety of approaches to obtain an analysis (see various FTC options).

 

Company NameGeothermal Resource Technologies Inc
Business CategoryGeothermal
Address302 E. Warehouse St
Elkton
South Dakota
United States
ZIP: 57026
PresidentNA
Year EstablishedNA
EmployeesNA
MembershipsNA
Hours of OperationNA
Company Services
  • Ftc Testing
  • Grout Testing
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