Energiespeicher CPG
Energiespeicher gleichen die Differenz zwischen Energieangebot und Energienachfrage aus, indem sie überschüssig erzeugte Energie zwischenspeichern und bei Bedarf wieder abgeben. Da die künftige Energieversorgung auf fluktuierenden erneuerbaren Energien basieren wird, wird der Ausbau von Energiespeichern zunehmend wichtiger.
What is CO2 plume geothermal (CpG)?
CO2-Plume Geothermal (CPG) uses the advantages of CO2 as a geothermal working fluid to extract geothermal heat from naturally permeable reservoirs at ~2–5 km depth. Benefiting from increased mass flow due to its lower dynamic viscosity, the utilization of CO2 doubles to triples the geothermal energy extraction compared to brine.
Can CpG be used to store energy?
How, with the addition of a “shallow” reservoir, CPG can be used to store energy. Fleming, Adams, Bielicki, Kuehn, Saar, Flexible CO2-Plume Geothermal (CPG-F): Using Geologically Stored CO2 to Provide Dispatchable Power and Energy Storage, Energy Conversion and Management, 253/115082, 2022.
Could CpG technology expand the geothermal energy base?
CPG technology could expand the geothermal energy base to locations where geothermal power plants are not typically considered options for cost-competitive electricity generation, thus expanding the contribution that geothermal power may make for supporting variable renewable energy technologies .
How can CpG-F power plants reduce energy demand?
CPG-F facilities can reduce this modeled system capacity to just over 2 times peak demand by providing energy storage over both seasonal and short-term timescales. The operational flexibility of CPG-F facilities is further leveraged to bypass the ambient air temperature constraint of CPG power plants by storing energy at critical temperatures.
Does CpG-F provide energy storage and energy storage simultaneously?
Fig. 6 shows CPG-F facilities operated to provide 1) only dispatchable power (light blue bars), 2) only energy storage (grey bars), and 3) both energy storage and dispatchable power simultaneously (white bars) on different days throughout the year in all four optimizations.
Does ambient air temperature affect energy storage capacity in CpG power plants?
Fig. 6 shows that more energy storage capacity is needed when electricity demand peaks in the summer compared to when it peaks in the winter. This relationship further demonstrates the implications of the ambient air temperature constraint for CPG power plants.
