Horizontal water-to-air heat pump (Rafferty 1997, 2)

Simple schematic of a geothermal district heating system (Trexler 2008, 7).

Diagram of a generic Hot Dry Rock geothermal power plant. Souce: http://www.businesspundit.com/wp-content/uploads/2008/08/geothermal.png

Schematic of the Idaho Capital Mall geothermal district heating system (Neely 1996, 20)

Geothermal station near Reyjavik. Source: National Geographic Blog Wild

 

Google Satelite view showing urban setting of Friends Center. The site of the geothermal deep standing wells was 15th St. between Race and Cherry streets. The middle image is the site plan for the geothermal wells. The image on the right illustrates that the target depth of 1500 feet is deeper than the Empire States Building is tall.

 

 

The Svartsengi Geothermal Plant and the Blue . Lagoon. Source: Thorolfsson 2005