Thermal Conductivity Test
Hutchinson, KS
Heating and Cooling
Let the ground You walk on heat & cool your home or business
Thermal conductivity is the physical property of a material that determines how easily heat
can pass through it.  The average thermal conductivity of a formation that a geothermal
ground-loop heat exchanger is installed into is important in order to develop a properly
sized heat exchanger for a particular application.  The information that is obtained from a
formation thermal conductivity (FTC) test can be input directly into most of the popular
design software programs.


The thermal conductivity of a formation is a prerequisite for a properly designed
geothermal ground-loop heat exchanger.  The thermal conductivity of the formation
determines how easily heat can be conducted to and from the circulating fluid in the heat
exchanger piping. 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 translate into 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
• The obtained information provides for a better estimate of installation cost.
• Precision designs save money on drilling, grouting and pipe costs.
• Proper designs allow the system to run more economically.
• Multiple tests can be conducted which would allow the comparison of different grouts.
• Test parameters can be set up to simulate loop response under cooling design                  
"Let the ground
You walk
on heat & cool
your home or
Contact Us:
Fire & Ice Geothermal, LLC - 198276 E. County Road 41 Woodward, OK 73801
Phone: 580-256-9439  Fax: 580-256-7080
Sheri Rice, Executive Assistant: