Parameter | Pacheco et al. [24] | Hoffmann et al. [25] |
Energy | 2.3 MWh | 8.3 kWh |
Filler material | Quartzite and silica filter sand | Quartzite rock |
Heat transfer fluid | Molten salt | Rapeseed oil |
Tank height | 6.1 m | 1.8 m |
Tank diameter | 3.0 m | 0.4 m |
Porosity | 0.22 | 0.41 |
Discharge time | 2 h | 3.5 h |
Temperature of HTF, charge | 390˚C | 210˚C |
Temperature of HTF, discharge | 290˚C | 160˚C |