A-One Geothermal, Inc. 1645 135th Street P.O. Box 100 Earlham, IA 50072

TAPPING THE EARTH'S NATURAL ENERGY TO SAVE YOU $$$

CONDUCTIVITY

 

 

On larger projects a conductivity test is important. WHY? Ground formations vary, conductivity tests show what that ground will store for energy.

 

If the test shows the ground will store less energy, the geothermal field must be enlarged. If the test shows the ground will store more energy, the geothermal field may be reduced.

 

Here are the 3 basic steps of a conductivity test:

 

  1. Drill (HDD or vertical)
    • Drill test hole
    • Insert/pullback geothermal pipe
    • Grout
    • Has to sit for at least 72 hours
  2. Test
    • Conductivity test may begin
    • Has to run for at least 40 hours
  3. Analysis
    • Submitted to lab for analysis
    • Results usually available within a week

 



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Test Drill            


Directional drill rig advancing rods to pull back geothermal loop.


 

   


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Formation Thermal Conductivity Test Unit


This unit includes: heating elements, datalogger, controls, pumps
The unit is hooked up to the generator.



 



Conductivity Test        


The generator and thermal conductivity test unit are hooked up to the geothermal loop.

The equipment and loop are under an insulating blanket to maintain
constant temperature.


                           
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