Geothermal Heating and Cooling

Heating and cooling is one of the largest uses of energy in a building.  By utilizing the earth’s relatively constant temperature (55° F), buildings can reduce this energy costs by 40% to 70%.  The system is composed of four major parts:

  1. circulating pumps & back-up boiler
  2. closed loop vertical field
  3. supply & return pipes
  4. heat pump in each housing unit.

The system circulates water through the ground in 300-ft.-deep pipes to either remove or add heat from the heat pump.

Besides the sustainable advantage of using less energy to operate this system, it does not require a large cooling tower on the exterior of the building, thereby reducing the impervious surfaces and allowing for more open space, which helps with the urban heat island effect.

For more information:

http://oee.nrcan.gc.ca/publications/infosource/pub/home/Heating_and_Cooling_with_a_Heat_Pump_Section4.cfm
http://en.wikipedia.org/wiki/Heat_pump#cite_note-0
http://geoexchange.org/