Geothermal

GEOTHERMAL ENERGY


Geothermal energy is naturally occurring heat generated constantly below the Earth’s surface due to the flow of terrestrial heat from the core and stored either in rock or hydrothermal formations.

Due to rapid expansion in the course of the last decades, geothermal energy has become one of the most important sources of renewable energy. The global installed capacity of geothermal power plants currently exceeds the 10GWel threshold.  

 

TURBODEN ORC | GEOTHERMAL APPLICATIONS  


Turboden ORC systems are able to utilize geothermal resource where electricity generation is neither technically nor economically feasible with conventional steam cycle based plants. Turboden’s ORC turbogenerators are designed to generate electric power efficiently and sustainably from low to medium enthalpy geothermal resources with water temperatures ranging between 90° C -200°C.

Effectively operating in a closed loop process, Turboden ORC power plants in geothermal applications produce zero emissions and ensure the sustainable use of any geothermal resource by replenishing the underground aquifer via re-injection at a rate similar to its use.

For an in depth look to selected geothermal power plants based on Turboden ORC units click here  

 

HOW THE CLOSED-LOOPED SYSTEM WORKS 


 

Through dedicated production wells the geothermal fluid is pumped up to the power plant, where it is used to pre-heat and vaporize an organic working fluid in a suitable heat exchanger system (pre-heater and evaporator) and is then injected back into the reservoir.

Inside the ORC the organic fluid vapor powers the turbine that drives the electric generator. The vapour is then cooled by a fluid in a closed circuit and condensed. The condensed organic fluid is pumped back into the regenerator to restart the cycle in the closed-loop circuit.

Geothermal fluids are confined inside the heat exchangers and never come into contact with neither the atmosphere nor the working fluid. After heating up the working fluid, the geothermal fluid is injected back into the reservoir with all the containing minerals and dissolved gases.

For more details on how a Turboden ORC works click here

For an overview of the ORC technology advantages in geothermal applications click here 

 

SUSTAINABILITY 


Effectively operating in a closed loop process, Turboden ORC power plants in geothermal applications produce zero emissions and ensure the sustainable use of any geothermal resource by replenishing the underground aquifer via re-injection at a rate similar to its use.

Geothermal fluids in Turboden ORC power plants are fully confined and re-injected through a closed loop process. Geothermal fluids are never flashed and only used as a medium for heating up and evaporating the working fluid; geothermal fluids per se are not evaporated and never make contact with the atmosphere before they are pumped back into the geothermal reservoir -with all the containing minerals and dissolved gases- to be reheated and continue the sustainable cycle.

For a more detailed explanation on how Turboden ORC achieve producing zero emissions in geothermal application click here

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