Geothermal Heat Transfer & Optimal Grout Selection

As a renewable source, low-enthalpy geothermal energy is becoming more relevant in heating and cooling buildings, by using an adapted heat pump to exchange thermal energy with the ground.  The efficiency of this process is heavily dependent upon the thermal characteristics of the system’s various components.  This webinar will specifically look at the sealing grout used in the installation of the system, and how different additives affect its thermal conductivity. 

Vertical closed-loop geothermal systems exchange heat with the ground through a closed buried pipe system, sealed with a grouting material that ensures the stability and thermal transmission of the borehole.  Testing of a wide range of natural and recycled aggregates as main constituents in cement-based mortars was conducted with C-Therm’s TCi Thermal Conductivity Analyzer (a Modified Transient Plane Source testing technique).  Results of this testing and more information about the importance of thermal grout will be presented.

This webinar will be of particular interest to engineers and researchers involved in the thermal characterization of cements, concrete, and geological materials. 


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