Dry steam power plants systems were the first type of
geothermal power generation plants built. They use the steam from the
geothermal reservoir as it comes from wells, and route it directly
through turbine/generator units to produce electricity. Flash steam
plants are the most common type of geothermal power generation plants in
operation today. The steam goes directly to a turbine, which drives a generator that produces electricity. The steam eliminates the need to burn fossil fuels to run the turbine. Steam technology is used today, however is not cost effective and have low efficiency.
TransPacific technology uses pressurized geothermal hot water comes up from the reservoir through a production well. The water enters the ORC recovery boiler where refrigerant mixture vapor is produced. The vapor then spins the turbine, which in turn spins a geneator that creates electricity. Low pressure vapor exiting the turbine condenses and pumped back to the recovery boiler. Condenser can be air or water cooled.
