Research Article
Numerical Simulation on Heat Recovery Efficiency of Different Working Fluids in High-Temperature Rock Mass
Table 1
Relevant parameters in the model.
| | Parameter | Value | Unit |
| | The density of sample () | 2700 | kg/m3 | | Dynamic viscosity of CO2 () | | Pa·s | | Universal gas constant () | 8.314510 | J/(mol·K) | | Molar mass of CO2 () | 44.009 | g/mol | | Thermal conductivity of CO2 () | 0.109 | W/(m·K) | | Thermal conductivity of rock sample () | 2.1 | W/(m·K) | | Specific heat capacity of CO2 () | 1955.6 | J/(kg·K) | | Specific heat capacity of rock sample () | 920 | J/(kg·K) | | Porosity () | 0.04 | | | Permeability () | | m2 | | Elastic modulus () | 37.5 | GPa | | Poisson ratio () | 0.25 | | | Fracture aperture () | 0.1 | mm | | Density of water () | 1000 | kg/m3 | | Dynamic viscosity of water () | 0.001 | Pa·s | | Convection heat exchange coefficient () | 2 | W/(m3·K) |
|
|
