Table 3 GEOPHIRES input parameters for example simulation 2
From: GEOPHIRES v2.0: updated geothermal techno-economic simulation tool
Subsurface parameters | |||
Reservoir type | Hydrothermal | Reservoir model | Linear thermal drawdown |
Well depth | 2000 m | Thermal drawdown perc. | 0.5% year−1 |
Number of production wells | 3 (vertical) | Number of injection wells | 3 (vertical) |
Production well inner diam. | 0.22 m (9″) | Injection well inner diam. | 0.22 m (9″) |
Productivity index | 5 kg s−1 bar−1 | Injectivity index | 5 kg s−1 bar−1 |
Bottom-hole temperature | 175 °C | Production well flow rate | 80 kg s−1 |
Rock heat capacity | 1000 J kg−1 K−1 | Water loss rate | 0% |
Rock density | 2700 kg m−3 | Wellbore heat transmission | Ramey’s model |
Rock thermal conductivity | 2.5 W m−1 K−1 | Geofluid | Pure water |
Surface parameters | |||
End-use | Electricity | Utilization factor | 90% |
Power plant type | Supercritical ORC | Pump efficiency | 75% |
Surface temperature | 15 °C | Ambient temperature | 15 °C |
Economic parameters | |||
Levelized cost model | FCR model | Project lifetime | 30 years |
Discount rate | 10.8% | Capital costs | Built-in correlations |