geo plant cycles
TRANSCRIPT
AECOM
25 July 2012 1
Overview of Thermodynamic Plant Cycles for Geothermal Power Plants
General Process Flow Diagram for Geothermal Plant Cycles
Back Pressure Steam Turbine Plant Cycle
Enthalpy of Geothermal Resource
High
Medium
Low
Type of Fluid Separation Plant Prime MoverHeat Transfer
Dry or Superheated Steam
Two Phase Fluid
Hot Water
Single Flash
Double Flash
Triple Flash
Back Pressure Steam Turbine
Condensing Steam Turbine
Organic RankineTurbine
Heat Exchangers
Reinjection Reinjection
Separator
Exhaust
Turbine Generator
BrineReinjection
2 PhaseProduction
Wells
AECOM
25 July 2012 2
Single Flash Condensing Steam Turbine Plant Cycle
Double Flash Condensing Steam Turbine Plant Cycle
Separator
Ejectors
Turbine Generator
NCG
LRVP
Brine CondensateReinjection MCW Pumps Reinjection
2 PhaseProduction
Wells
Cooling Tower
Condenser
HP Separator
Ejectors
LP SeparatorTurbine Generator
NCG
LRVP
Brine CondensateReinjection MCW Pumps Reinjection
2 PhaseProduction
Wells
Cooling Tower
Condenser
AECOM
25 July 2012 3
Two Phase Organic Rankine Plant Cycle
Kalina Plant Cycle
Separator
NCG
ORC Turbine Generator
2 PhaseProductionWells
Feed Pumps
Brine Reinjection
Air Cooled Condenser
Evaporator
Pre Heater
Condensate Pump
SeparatorNH3/H2O Turbine Generator
Brine Reinjection
Single PhaseProductionWells
Air Cooled Condenser
Evaporator
Pre Heater
Condensate Pump
Recuperator
AECOM
25 July 2012 4
Single Flash Back Pressure Steam Turbine with Bottoming ORC Plant Cycle
Single Flash Condensing Steam Turbine with Bottoming Brine ORC Plant Cycle
Steam Turbine GeneratorSeparator
NCG
ORC Turbine Generator2 PhaseProductionWells
Feed Pumps
ORC Turbine Generator
Feed Pumps
Brine Reinjection
Air Cooled Condenser
Evaporator
Pre Heater
Air Cooled Condenser
Evaporator
Condensate Pump
SteamSeparator
Ejectors
Turbine Generator
NCG
LRVP
BrineCondensateReinjection
ORC Turbine Generator
Feed PumpsBrine
Reinjection
2 PhaseProduction
Wells
Cooling Tower
Condenser
Air Cooled CondenserVapouriser