| Title | Classification of Shallow and Deep Geothermal Energy |
|---|---|
| Authors | Chuanshan Dai; Yan Chen |
| Year | 2008 |
| Conference | Geothermal Resources Council Transactions |
| Keywords | Classification; Geothermal Resource; Energy; Renewability; Heat Pump |
| Abstract | The difference between shallow and deep geothermal energy is clarified based on the second law of thermodynamics. We try to answer what the shallow geothermal energy is and its difference from the conventional geothermal energy and geothermal resources. The role of shallow geothermal played in ground source heat pumps is discussed. For the ground source coupled heat pump (GSHP) systems, we are believed that the heat (or the cold) comes from the seasonal variation of the sun, and the large heat storage capacity of soil or shallow aquifers rather than the low enthalpy resources. |