Grouting the borehole for many first-time installers is a steep learning curve. At best, it is time consuming; at worst, the borehole can be ruined! Drilling contractors typically spend the majority of their research time on the drilling and assume the grouting will be simple compared to drilling the borehole. While this premise is generally correct, grouting still requires the correct setup with the right equipment, mix and training.
Architect Eric Corey Freed specializes in green designs and makes extensive use of geothermal heating and cooling in his projects. That experience led the International Ground Source Heat Pump Association to invite him to deliver the keynote at this year’s Technical Conference and Expo, held Oct. 9-10 in Las Vegas.
I can’t tell my readers anything about geothermal heating and cooling. Those who work in that segment of drilling and contracting know how to get installations done. They know geothermal works off the Earth’s constant, natural temperature. They know their systems have a long lifespan. They know ground source heat pumps win on efficiency.
A lot of contractors might opposed government subsidies on principle, but drillers in geothermal could benefit from a little more federal attention to that sector.
An "enhanced geothermal system" recently went on line near Reno, Nev., that uses directional drilling and hydraulic fracturing to increase permeability of hot rocks.
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