Science – Society – Technology
From: An efficient hybrid model for thermal analysis of deep borehole heat exchangers
Rock/soil layers | Material | Depth (m) | Thermal conductivity (W m−1 K−1) | Specific heat capacity (J kg−1 K−1) | Density (kg m−3) |
---|---|---|---|---|---|
Rock–soil 1 | Soil–basalt | 0–100 | 2.7 | 915 | 2750 |
Rock–soil 2 | Granite | 100–1400 | 2.78 | 925 | 2800 |
Rock–soil 3 | Sandstone | 1400–2000 | 2.8 | 920 | 2800 |
Rock–soil 4 | Limestone | 2000–2360 | 2.75 | 900 | 2780 |
Rock–soil 5 | Sandstone | 2360–2600 | 2.8 | 920 | 2800 |