Geothermal heating and cooling

RE-06 Install Ground-Source or Geothermal Heating and Cooling System... 

Figure 3. The regions of pressure and temperature accessible by joining static compression methods to heating and cooling techniques are compared to the Earth geotherm and to Jupiter and Uranus isentropes.

Addresses piping typically found in electric power generating stations, industrial and institutional plants, geothermal heating systems, and central and district heating and cooling systems. 

Geothermal Waste heat Heat pumps Thermoelectrics Heating and cooling Electricity... 

Geothermal ground-loop systems for heating and cooling make use of the constant temperature of the earth that exists a short distance below ground level. 

Re-injection into the subsurface is the most often used technique to dispose of geothermal waste heat. The cooled-down fluids, after having fulfilled their tasks in the power generation cycle (or in the direct-use application), can be reinjected into the same geothermal reservoir from which the hot fluid has been produced. The fluid re-injection can help to sustain reservoir pressure, which otherwise would decrease during production. For the re-injection, however, additional wells must be drilled and - if required by the rock permeability at depth - the fluid must... 

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