Heating and Cooling with Geothermal Energy

Thermal Conductivity Testing

Thermal conductivity is a measurement of how easily heat can pass through a given material or formation. A thermal conductivity test is a prerequisite for a properly designed geothermal ground-loop heat exchanger: it indicates 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.

Connecticut Wells has its own thermal conductivity testing trailer, which allows us to respond quickly to our customers’ demands and to return results quickly.

Why Consider Thermal Conductivity Testing?

  • test results allow more accurate installation cost estimates
  • test parameters can be set to simulate loop response under cooling design conditions
  • test results enable ground loops to be sized to match existing formation conditions
  • multiple tests allow comparison of different grouts
  • precision designs allow the system to run more economically and save money on drilling, grouting and pipe materials
  • test results can be input directly into most popular design software programs

View Sample Conductivity Test Report >