e926a7c0_ed_technologies___Decarboni_se__Description
[Criteria] General benefits [Description] 
The significant density difference between the cold SCCO2 in the injection well and the hot SCCO2 in the production wells provide a large buoyant drive (thermal siphoning) and markedly reduce the circulating pumping power requirements of a water-based Hot Dry Rock (HDR) system.Inability of SCCO2 to dissolve and transport mineral species from the geothermal reservoir to the surface would eliminate scaling in the surface equipment (piping and heat exchangers).HDR reservoirs with temperatures > 375ºC (the critical temperature for water) could be developed without problems associated with silica dissolution.Much larger flow rates can be achieved with CO2 than can be achieved with water due the lower viscosity of CO2.
2. Description of short-listed technologies | Decarboni.se
Description