Projected 2012 performance of rehabilitated school: 78.8 kBtu/sf/yr
Long-term goal (2030): “NetZero” 100 percent reduction in energy use
Geothermal Heating and Cooling
Closed loop ground source heating and cooling system
Designed to use constant 55-60 degree temperature of the earth to reduce heating and cooling needs
A geothermal field under the north parking lot consists of 30 holes, each 300 feet deep
Piping connects the bore holes and circulates water deep into the ground and then back inside the school through a system of 27 heat pumps and fan coil units that are located in each of the interior spaces
In summer, the relative coolness of earth decreases the temperature of the circulating water, eliminating 100 percent of the need for fossil-fuel-generated cooling.
In winter, the relative warmth of earth increases the temperature of the circulating water, eliminating 80 percent of the need for fossil-fuel-generated heating.
Geothermal ground source heating and cooling systems are relatively “low tech” and becoming increasingly common in the United States